diff --git a/assets/scss/custom.scss b/assets/scss/custom.scss
index 29a7f0e4b6e..c9b12c94e0f 100644
--- a/assets/scss/custom.scss
+++ b/assets/scss/custom.scss
@@ -623,6 +623,103 @@
   color: #1264ab;
 }
 
+/* ---- Lesson plans (data/lesson_plans.json) ----
+   One green marks lesson-plan sets everywhere: the dot on sub-cluster headers,
+   cluster stats and sidebar entries, the filter chip, and the teaching-materials strip. */
+$lp-green: #2f6b4f;
+
+.lp-dot {
+  display: inline-block;
+  width: 0.5rem;
+  height: 0.5rem;
+  border-radius: 50%;
+  background: $lp-green;
+  margin-left: 0.35rem;
+  vertical-align: 0.05em;
+  flex-shrink: 0;
+}
+.cluster-stats .lp-dot { margin-left: 0; width: 0.45rem; height: 0.45rem; }
+/* Sidebar sub-cluster: dot sits beside the reference count so it never wraps onto its own line */
+.cluster-nav-subs .badge .lp-dot { margin: 0 0.35rem 0 0; vertical-align: 0; }
+
+.lp-strip {
+  background: #fff;
+  border: 1px solid rgba(0,0,0,0.08);
+  border-left: 4px solid $lp-green;
+  border-radius: 4px;
+  padding: 0.45rem 0.7rem 0.4rem;
+  margin: 0.15rem 0 0.55rem;
+}
+/* Set topic, shown only when it differs from the sub-cluster it sits under (data: "heading") */
+.lp-strip__heading { text-transform: none; letter-spacing: 0; }
+.lp-strip__label {
+  display: block;
+  font-size: 0.58rem;
+  font-weight: 700;
+  text-transform: uppercase;
+  letter-spacing: 0.5px;
+  color: $lp-green;
+  margin-bottom: 0.25rem;
+}
+.lp-strip__chips {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 0.3rem;
+  margin-bottom: 0.3rem;
+}
+.lp-chip {
+  font-size: 0.7rem;
+  font-weight: 600;
+  color: #333;
+  background: rgba($lp-green,0.07);
+  border: 1px solid rgba($lp-green,0.2);
+  border-radius: 3px;
+  padding: 0.12rem 0.45rem;
+  max-width: 100%;
+  overflow-wrap: anywhere;
+}
+.lp-chip__formats {
+  font-weight: 400;
+  color: #777;
+}
+.lp-chip a {
+  color: $lp-green;
+  font-weight: 600;
+  text-decoration: underline;
+  text-decoration-color: rgba($lp-green,0.35);
+  text-underline-offset: 2px;
+}
+.lp-chip a:hover { color: #1f4a36; text-decoration-color: currentColor; }
+.lp-strip__meta {
+  font-size: 0.62rem;
+  line-height: 1.45;
+  color: #777;
+  margin: 0;
+}
+.lp-strip__meta a { color: #555; text-decoration: underline; text-decoration-color: rgba(0,0,0,0.25); }
+.lp-strip__meta a:hover { color: $lp-green; }
+
+/* Lesson-plan filter: a .fr-specificity-toggle checkbox whose label includes the dot */
+.lp-filter-toggle .lp-dot { margin: 0 0.2rem 0 0; }
+
+/* Lesson-plan filter on (.lp-filter-on set by featured-resources.js): hide everything without a set */
+.lp-filter-on .cluster-section:not([data-lp]),
+.lp-filter-on .acc-section:not([data-lp]),
+.lp-filter-on .cluster-nav-group:not([data-lp]),
+.lp-filter-on .cluster-nav-subs .nav-item:not([data-lp]) {
+  display: none;
+}
+/* Remaining sub-clusters lose their visible neighbour, so drop the divider on the first one shown */
+.lp-filter-on .acc-section[data-lp] { border-top: 0; }
+.lp-filter-on .acc-section[data-lp] ~ .acc-section[data-lp] { border-top: 1px solid rgba(0,0,0,0.06); }
+.lp-filter-empty { display: none; }
+.lp-filter-on .lp-filter-empty {
+  display: block;
+  font-size: 0.8rem;
+  color: #666;
+  padding: 1rem 0;
+}
+
 /* ---- Publication list ---- */
 .publication-list {
   padding-left: 1.5rem;
@@ -2175,7 +2272,7 @@ h1.clusters-site-heading.clusters-hub-page__title {
   display: flex;
   flex-wrap: wrap;
   gap: 0.75rem;
-  align-items: flex-start;
+  align-items: center;
   margin-bottom: 0.75rem;
   padding: 0.65rem 0.75rem;
   background: rgba(255,255,255,0.5);
@@ -2228,6 +2325,7 @@ h1.clusters-site-heading.clusters-hub-page__title {
   display: flex;
   align-items: center;
   gap: 0.3rem;
+  margin: 0; /* Bootstrap gives <label> a bottom margin, which lifts it off the button row */
   font-size: 0.68rem;
   color: #666;
   cursor: pointer;
diff --git a/data/lesson_plans.json b/data/lesson_plans.json
new file mode 100644
index 00000000000..63a6b3431d8
--- /dev/null
+++ b/data/lesson_plans.json
@@ -0,0 +1,542 @@
+{
+  "sets": {
+    "2": {
+      "questionable-measurement-practices-qmps-validity-reliability-issues": {
+        "title": "Questionable measurement practices (QMPs), validity, and reliability",
+        "record": "https://zenodo.org/records/23090874",
+        "doi": "10.5281/zenodo.23090874",
+        "creators": [
+          "Hakile Resulbegoviq"
+        ],
+        "reviewers": [
+          "Ognjen Bobičić",
+          "Dhruv Aggarwal"
+        ],
+        "files": [
+          {
+            "label": "Slides",
+            "url": "https://zenodo.org/records/23090874/files/questionable-measurement-practices-slides.pptx?download=1",
+            "format": "PPTX"
+          },
+          {
+            "label": "Slides",
+            "url": "https://zenodo.org/records/23090874/files/questionable-measurement-practices-slides.pdf?download=1",
+            "format": "PDF"
+          },
+          {
+            "label": "Lesson plan L1",
+            "url": "https://zenodo.org/records/23090874/files/questionable-measurement-practices-lesson-plan-L1.docx?download=1",
+            "format": "DOCX"
+          },
+          {
+            "label": "Lesson plan L1",
+            "url": "https://zenodo.org/records/23090874/files/questionable-measurement-practices-lesson-plan-L1.pdf?download=1",
+            "format": "PDF"
+          },
+          {
+            "label": "Lesson plan L2",
+            "url": "https://zenodo.org/records/23090874/files/questionable-measurement-practices-lesson-plan-L2.docx?download=1",
+            "format": "DOCX"
+          },
+          {
+            "label": "Lesson plan L2",
+            "url": "https://zenodo.org/records/23090874/files/questionable-measurement-practices-lesson-plan-L2.pdf?download=1",
+            "format": "PDF"
+          },
+          {
+            "label": "Lesson plan L3",
+            "url": "https://zenodo.org/records/23090874/files/questionable-measurement-practices-lesson-plan-L3.docx?download=1",
+            "format": "DOCX"
+          },
+          {
+            "label": "Lesson plan L3",
+            "url": "https://zenodo.org/records/23090874/files/questionable-measurement-practices-lesson-plan-L3.pdf?download=1",
+            "format": "PDF"
+          }
+        ]
+      },
+      "research-design-sampling-methods-its-implications-for-inferences": {
+        "title": "Research design, sampling methods, and their implications for inferences",
+        "record": "https://zenodo.org/records/23090924",
+        "doi": "10.5281/zenodo.23090924",
+        "creators": [
+          "Carolina Natel"
+        ],
+        "reviewers": [
+          "Lukas Röseler",
+          "Yijing Wang"
+        ],
+        "files": [
+          {
+            "label": "Slides",
+            "url": "https://zenodo.org/records/23090924/files/research-design-sampling-slides.pptx?download=1",
+            "format": "PPTX"
+          },
+          {
+            "label": "Slides",
+            "url": "https://zenodo.org/records/23090924/files/research-design-sampling-slides.pdf?download=1",
+            "format": "PDF"
+          },
+          {
+            "label": "Lesson plan L1",
+            "url": "https://zenodo.org/records/23090924/files/research-design-sampling-lesson-plan-L1.docx?download=1",
+            "format": "DOCX"
+          },
+          {
+            "label": "Lesson plan L1",
+            "url": "https://zenodo.org/records/23090924/files/research-design-sampling-lesson-plan-L1.pdf?download=1",
+            "format": "PDF"
+          },
+          {
+            "label": "Lesson plan L2",
+            "url": "https://zenodo.org/records/23090924/files/research-design-sampling-lesson-plan-L2.docx?download=1",
+            "format": "DOCX"
+          },
+          {
+            "label": "Lesson plan L2",
+            "url": "https://zenodo.org/records/23090924/files/research-design-sampling-lesson-plan-L2.pdf?download=1",
+            "format": "PDF"
+          },
+          {
+            "label": "Lesson plan L3",
+            "url": "https://zenodo.org/records/23090924/files/research-design-sampling-lesson-plan-L3.docx?download=1",
+            "format": "DOCX"
+          },
+          {
+            "label": "Lesson plan L3",
+            "url": "https://zenodo.org/records/23090924/files/research-design-sampling-lesson-plan-L3.pdf?download=1",
+            "format": "PDF"
+          },
+          {
+            "label": "Anticipation guide (activity slides)",
+            "url": "https://zenodo.org/records/23090924/files/research-design-sampling-anticipation-guide.pptx?download=1",
+            "format": "PPTX"
+          },
+          {
+            "label": "Anticipation guide (activity slides)",
+            "url": "https://zenodo.org/records/23090924/files/research-design-sampling-anticipation-guide.pdf?download=1",
+            "format": "PDF"
+          }
+        ]
+      }
+    },
+    "3": {
+      "participatory-research": {
+        "title": "Participatory research",
+        "record": "https://zenodo.org/records/23090886",
+        "doi": "10.5281/zenodo.23090886",
+        "creators": [
+          "Angelos Konstantinidis"
+        ],
+        "reviewers": [
+          "Pablo Ezequiel Flores Kanter",
+          "Sarah Siddiqui"
+        ],
+        "files": [
+          {
+            "label": "Slides",
+            "url": "https://zenodo.org/records/23090886/files/participatory-research-slides.pptx?download=1",
+            "format": "PPTX"
+          },
+          {
+            "label": "Slides",
+            "url": "https://zenodo.org/records/23090886/files/participatory-research-slides.pdf?download=1",
+            "format": "PDF"
+          },
+          {
+            "label": "Lesson plan L1",
+            "url": "https://zenodo.org/records/23090886/files/participatory-research-lesson-plan-L1.docx?download=1",
+            "format": "DOCX"
+          },
+          {
+            "label": "Lesson plan L1",
+            "url": "https://zenodo.org/records/23090886/files/participatory-research-lesson-plan-L1.pdf?download=1",
+            "format": "PDF"
+          },
+          {
+            "label": "Lesson plan L2",
+            "url": "https://zenodo.org/records/23090886/files/participatory-research-lesson-plan-L2.docx?download=1",
+            "format": "DOCX"
+          },
+          {
+            "label": "Lesson plan L2",
+            "url": "https://zenodo.org/records/23090886/files/participatory-research-lesson-plan-L2.pdf?download=1",
+            "format": "PDF"
+          },
+          {
+            "label": "Lesson plan L3a",
+            "url": "https://zenodo.org/records/23090886/files/participatory-research-lesson-plan-L3a.docx?download=1",
+            "format": "DOCX"
+          },
+          {
+            "label": "Lesson plan L3a",
+            "url": "https://zenodo.org/records/23090886/files/participatory-research-lesson-plan-L3a.pdf?download=1",
+            "format": "PDF"
+          },
+          {
+            "label": "Lesson plan L3b",
+            "url": "https://zenodo.org/records/23090886/files/participatory-research-lesson-plan-L3b.docx?download=1",
+            "format": "DOCX"
+          },
+          {
+            "label": "Lesson plan L3b",
+            "url": "https://zenodo.org/records/23090886/files/participatory-research-lesson-plan-L3b.pdf?download=1",
+            "format": "PDF"
+          }
+        ]
+      }
+    },
+    "5": {
+      "computational-reproducibility": {
+        "title": "Computational reproducibility",
+        "record": "https://zenodo.org/records/23090928",
+        "doi": "10.5281/zenodo.23090928",
+        "creators": [
+          "Sofia Pelica"
+        ],
+        "reviewers": [
+          "Leticia R. Micheli",
+          "Federica Stablum",
+          "Flavio Azevedo"
+        ],
+        "files": [
+          {
+            "label": "Slides",
+            "url": "https://zenodo.org/records/23090928/files/computational-reproducibility-slides.pptx?download=1",
+            "format": "PPTX"
+          },
+          {
+            "label": "Slides",
+            "url": "https://zenodo.org/records/23090928/files/computational-reproducibility-slides.pdf?download=1",
+            "format": "PDF"
+          },
+          {
+            "label": "Lesson plan L1",
+            "url": "https://zenodo.org/records/23090928/files/computational-reproducibility-lesson-plan-L1.docx?download=1",
+            "format": "DOCX"
+          },
+          {
+            "label": "Lesson plan L1",
+            "url": "https://zenodo.org/records/23090928/files/computational-reproducibility-lesson-plan-L1.pdf?download=1",
+            "format": "PDF"
+          },
+          {
+            "label": "Lesson plan L2",
+            "url": "https://zenodo.org/records/23090928/files/computational-reproducibility-lesson-plan-L2.docx?download=1",
+            "format": "DOCX"
+          },
+          {
+            "label": "Lesson plan L2",
+            "url": "https://zenodo.org/records/23090928/files/computational-reproducibility-lesson-plan-L2.pdf?download=1",
+            "format": "PDF"
+          },
+          {
+            "label": "Lesson plan L3",
+            "url": "https://zenodo.org/records/23090928/files/computational-reproducibility-lesson-plan-L3.docx?download=1",
+            "format": "DOCX"
+          },
+          {
+            "label": "Lesson plan L3",
+            "url": "https://zenodo.org/records/23090928/files/computational-reproducibility-lesson-plan-L3.pdf?download=1",
+            "format": "PDF"
+          },
+          {
+            "label": "L1 materials: activity slides, handouts, R and Quarto scripts, example data",
+            "url": "https://zenodo.org/records/23090928/files/computational-reproducibility-lesson-plan-L1-materials.zip?download=1",
+            "format": "ZIP"
+          },
+          {
+            "label": "L2 materials: exercises with solutions, handouts, example data",
+            "url": "https://zenodo.org/records/23090928/files/computational-reproducibility-lesson-plan-L2-materials.zip?download=1",
+            "format": "ZIP"
+          },
+          {
+            "label": "L3 materials: example script and data",
+            "url": "https://zenodo.org/records/23090928/files/computational-reproducibility-lesson-plan-L3-materials.zip?download=1",
+            "format": "ZIP"
+          }
+        ]
+      }
+    },
+    "7": {
+      "open-peer-review": {
+        "title": "Open peer review",
+        "record": "https://zenodo.org/records/23090930",
+        "doi": "10.5281/zenodo.23090930",
+        "creators": [
+          "Ebuka Ezeike"
+        ],
+        "reviewers": [
+          "Palmer Smith",
+          "Ognjen Bobičić"
+        ],
+        "files": [
+          {
+            "label": "Slides",
+            "url": "https://zenodo.org/records/23090930/files/open-peer-review-slides.pptx?download=1",
+            "format": "PPTX"
+          },
+          {
+            "label": "Slides",
+            "url": "https://zenodo.org/records/23090930/files/open-peer-review-slides.pdf?download=1",
+            "format": "PDF"
+          },
+          {
+            "label": "Lesson plan L1",
+            "url": "https://zenodo.org/records/23090930/files/open-peer-review-lesson-plan-L1.docx?download=1",
+            "format": "DOCX"
+          },
+          {
+            "label": "Lesson plan L1",
+            "url": "https://zenodo.org/records/23090930/files/open-peer-review-lesson-plan-L1.pdf?download=1",
+            "format": "PDF"
+          },
+          {
+            "label": "Lesson plan L2",
+            "url": "https://zenodo.org/records/23090930/files/open-peer-review-lesson-plan-L2.docx?download=1",
+            "format": "DOCX"
+          },
+          {
+            "label": "Lesson plan L2",
+            "url": "https://zenodo.org/records/23090930/files/open-peer-review-lesson-plan-L2.pdf?download=1",
+            "format": "PDF"
+          },
+          {
+            "label": "Lesson plan L3",
+            "url": "https://zenodo.org/records/23090930/files/open-peer-review-lesson-plan-L3.docx?download=1",
+            "format": "DOCX"
+          },
+          {
+            "label": "Lesson plan L3",
+            "url": "https://zenodo.org/records/23090930/files/open-peer-review-lesson-plan-L3.pdf?download=1",
+            "format": "PDF"
+          }
+        ]
+      },
+      "preprints-and-postprints": {
+        "title": "Preprints and postprints",
+        "record": "https://zenodo.org/records/23090894",
+        "doi": "10.5281/zenodo.23090894",
+        "creators": [
+          "Femi Qudus Arogundade"
+        ],
+        "reviewers": [
+          "Lukas Röseler",
+          "Palmer Smith"
+        ],
+        "files": [
+          {
+            "label": "Slides",
+            "url": "https://zenodo.org/records/23090894/files/preprints-postprints-slides.pptx?download=1",
+            "format": "PPTX"
+          },
+          {
+            "label": "Slides",
+            "url": "https://zenodo.org/records/23090894/files/preprints-postprints-slides.pdf?download=1",
+            "format": "PDF"
+          },
+          {
+            "label": "Lesson plan L1",
+            "url": "https://zenodo.org/records/23090894/files/preprints-postprints-lesson-plan-L1.docx?download=1",
+            "format": "DOCX"
+          },
+          {
+            "label": "Lesson plan L1",
+            "url": "https://zenodo.org/records/23090894/files/preprints-postprints-lesson-plan-L1.pdf?download=1",
+            "format": "PDF"
+          },
+          {
+            "label": "Lesson plan L2",
+            "url": "https://zenodo.org/records/23090894/files/preprints-postprints-lesson-plan-L2.docx?download=1",
+            "format": "DOCX"
+          },
+          {
+            "label": "Lesson plan L2",
+            "url": "https://zenodo.org/records/23090894/files/preprints-postprints-lesson-plan-L2.pdf?download=1",
+            "format": "PDF"
+          },
+          {
+            "label": "Lesson plan L3",
+            "url": "https://zenodo.org/records/23090894/files/preprints-postprints-lesson-plan-L3.docx?download=1",
+            "format": "DOCX"
+          },
+          {
+            "label": "Lesson plan L3",
+            "url": "https://zenodo.org/records/23090894/files/preprints-postprints-lesson-plan-L3.pdf?download=1",
+            "format": "PDF"
+          }
+        ]
+      },
+      "why-open-access": {
+        "title": "Why open access?",
+        "record": "https://zenodo.org/records/23090861",
+        "doi": "10.5281/zenodo.23090861",
+        "creators": [
+          "Ognjen Bobičić"
+        ],
+        "reviewers": [
+          "Ebuka Ezeike",
+          "Dhruv Aggarwal"
+        ],
+        "files": [
+          {
+            "label": "Slides",
+            "url": "https://zenodo.org/records/23090861/files/why-open-access-slides.pptx?download=1",
+            "format": "PPTX"
+          },
+          {
+            "label": "Slides",
+            "url": "https://zenodo.org/records/23090861/files/why-open-access-slides.pdf?download=1",
+            "format": "PDF"
+          },
+          {
+            "label": "Lesson plan L1",
+            "url": "https://zenodo.org/records/23090861/files/why-open-access-lesson-plan-L1.docx?download=1",
+            "format": "DOCX"
+          },
+          {
+            "label": "Lesson plan L1",
+            "url": "https://zenodo.org/records/23090861/files/why-open-access-lesson-plan-L1.pdf?download=1",
+            "format": "PDF"
+          },
+          {
+            "label": "Lesson plan L2",
+            "url": "https://zenodo.org/records/23090861/files/why-open-access-lesson-plan-L2.docx?download=1",
+            "format": "DOCX"
+          },
+          {
+            "label": "Lesson plan L2",
+            "url": "https://zenodo.org/records/23090861/files/why-open-access-lesson-plan-L2.pdf?download=1",
+            "format": "PDF"
+          },
+          {
+            "label": "Lesson plan L3",
+            "url": "https://zenodo.org/records/23090861/files/why-open-access-lesson-plan-L3.docx?download=1",
+            "format": "DOCX"
+          },
+          {
+            "label": "Lesson plan L3",
+            "url": "https://zenodo.org/records/23090861/files/why-open-access-lesson-plan-L3.pdf?download=1",
+            "format": "PDF"
+          }
+        ]
+      }
+    },
+    "9": {
+      "accessibility": {
+        "title": "Accessibility in research",
+        "record": "https://zenodo.org/records/23090899",
+        "doi": "10.5281/zenodo.23090899",
+        "creators": [
+          "Roksana Sobolak"
+        ],
+        "reviewers": [
+          "Leticia R. Micheli",
+          "Federica Stablum"
+        ],
+        "files": [
+          {
+            "label": "Slides",
+            "url": "https://zenodo.org/records/23090899/files/accessibility-slides.pptx?download=1",
+            "format": "PPTX"
+          },
+          {
+            "label": "Slides",
+            "url": "https://zenodo.org/records/23090899/files/accessibility-slides.pdf?download=1",
+            "format": "PDF"
+          },
+          {
+            "label": "Lesson plan L1",
+            "url": "https://zenodo.org/records/23090899/files/accessibility-lesson-plan-L1.docx?download=1",
+            "format": "DOCX"
+          },
+          {
+            "label": "Lesson plan L1",
+            "url": "https://zenodo.org/records/23090899/files/accessibility-lesson-plan-L1.pdf?download=1",
+            "format": "PDF"
+          },
+          {
+            "label": "Lesson plan L2",
+            "url": "https://zenodo.org/records/23090899/files/accessibility-lesson-plan-L2.docx?download=1",
+            "format": "DOCX"
+          },
+          {
+            "label": "Lesson plan L2",
+            "url": "https://zenodo.org/records/23090899/files/accessibility-lesson-plan-L2.pdf?download=1",
+            "format": "PDF"
+          },
+          {
+            "label": "Lesson plan L3",
+            "url": "https://zenodo.org/records/23090899/files/accessibility-lesson-plan-L3.docx?download=1",
+            "format": "DOCX"
+          },
+          {
+            "label": "Lesson plan L3",
+            "url": "https://zenodo.org/records/23090899/files/accessibility-lesson-plan-L3.pdf?download=1",
+            "format": "PDF"
+          },
+          {
+            "label": "L1 activity: accessibility barriers",
+            "url": "https://zenodo.org/records/23090899/files/accessibility-L1-activity-accessibility-barriers.pptx?download=1",
+            "format": "PPTX"
+          },
+          {
+            "label": "L1 activity: accessibility barriers",
+            "url": "https://zenodo.org/records/23090899/files/accessibility-L1-activity-accessibility-barriers.pdf?download=1",
+            "format": "PDF"
+          },
+          {
+            "label": "L1 activity: barrier theatre",
+            "url": "https://zenodo.org/records/23090899/files/accessibility-L1-activity-barrier-theatre.pptx?download=1",
+            "format": "PPTX"
+          },
+          {
+            "label": "L1 activity: barrier theatre",
+            "url": "https://zenodo.org/records/23090899/files/accessibility-L1-activity-barrier-theatre.pdf?download=1",
+            "format": "PDF"
+          },
+          {
+            "label": "L2 activity: redesigning poor academic environments",
+            "url": "https://zenodo.org/records/23090899/files/accessibility-L2-activity-redesigning-academic-environments.pptx?download=1",
+            "format": "PPTX"
+          },
+          {
+            "label": "L2 activity: redesigning poor academic environments",
+            "url": "https://zenodo.org/records/23090899/files/accessibility-L2-activity-redesigning-academic-environments.pdf?download=1",
+            "format": "PDF"
+          },
+          {
+            "label": "L2 activity: increasing accessibility in a dissertation",
+            "url": "https://zenodo.org/records/23090899/files/accessibility-L2-activity-accessible-dissertation.docx?download=1",
+            "format": "DOCX"
+          },
+          {
+            "label": "L2 activity: increasing accessibility in a dissertation",
+            "url": "https://zenodo.org/records/23090899/files/accessibility-L2-activity-accessible-dissertation.pdf?download=1",
+            "format": "PDF"
+          },
+          {
+            "label": "L3 worksheet: WCAG as a tool in practice",
+            "url": "https://zenodo.org/records/23090899/files/accessibility-L3-worksheet-WCAG.docx?download=1",
+            "format": "DOCX"
+          },
+          {
+            "label": "L3 worksheet: WCAG as a tool in practice",
+            "url": "https://zenodo.org/records/23090899/files/accessibility-L3-worksheet-WCAG.pdf?download=1",
+            "format": "PDF"
+          },
+          {
+            "label": "L3 activity: discussing open science practices and accessibility",
+            "url": "https://zenodo.org/records/23090899/files/accessibility-L3-activity-open-science-and-accessibility.pptx?download=1",
+            "format": "PPTX"
+          },
+          {
+            "label": "L3 activity: discussing open science practices and accessibility",
+            "url": "https://zenodo.org/records/23090899/files/accessibility-L3-activity-open-science-and-accessibility.pdf?download=1",
+            "format": "PDF"
+          }
+        ]
+      }
+    }
+  }
+}
diff --git a/layouts/clusters/cluster.html b/layouts/clusters/cluster.html
index da2e3fd01d5..18bc67e1233 100644
--- a/layouts/clusters/cluster.html
+++ b/layouts/clusters/cluster.html
@@ -71,6 +71,10 @@ <h1 class="clusters-heading-row__title clusters-site-heading" itemprop="headline
             </div>
             {{ end }}
             {{ partial "clusters/cluster_section.html" (dict "cluster" $cluster "ci" $ci "colors" $colors) }}
+            {{/* Shown by CSS when the lesson-plan filter hides this whole cluster */}}
+            {{ if not (index (partialCached "clusters/lesson_plans.html" "lesson-plans") (printf "%d" $n)) }}
+            <p class="lp-filter-empty" role="status">This cluster has no lesson plans yet. The clusters navigation lists the clusters that have them.</p>
+            {{ end }}
           </main>
         </div>
       </div>
diff --git a/layouts/partials/clusters/cluster_section.html b/layouts/partials/clusters/cluster_section.html
index dbeb5eb956a..25a2bb83f4e 100644
--- a/layouts/partials/clusters/cluster_section.html
+++ b/layouts/partials/clusters/cluster_section.html
@@ -19,13 +19,17 @@
 {{ end }}
 {{ $hasFeatured := and $featuredEnabled $featuredData }}
 
-<section id="{{ $cid }}" class="cluster-section" style="background-color: {{ $color }};">
+{{/* Lesson-plan sets for this cluster, keyed by sub-cluster slug (keys validated in lesson_plans.html) */}}
+{{ $lpSets := index (partialCached "clusters/lesson_plans.html" "lesson-plans") (printf "%d" (int $cluster.number)) | default dict }}
+{{ $lpLabel := "Has lesson plans and slides" }}
+
+<section id="{{ $cid }}" class="cluster-section" style="background-color: {{ $color }};"{{ if $lpSets }} data-lp{{ end }}>
   <div class="cluster-header">
     <h2 class="cluster-title">
       <span class="cluster-number">{{ (int $cluster.number) }}</span>
       {{ $cluster.name }}
     </h2>
-    <span class="cluster-stats">{{ len $cluster.sub_clusters }} sub-clusters &middot; {{ $totalPubs }} references</span>
+    <span class="cluster-stats">{{ len $cluster.sub_clusters }} sub-clusters &middot; {{ $totalPubs }} references{{ with len $lpSets }} &middot; <span class="lp-dot" aria-hidden="true"></span> {{ . }} with lesson plans{{ end }}</span>
     <button class="acc-toggle-all" data-cluster="{{ $cid }}">Expand all</button>
   </div>
 
@@ -52,13 +56,14 @@ <h2 class="cluster-title">
     {{ end }}
 
     {{ range $si, $sc := $cluster.sub_clusters }}
-    {{/* Stable, human-readable anchor slug derived from the name (not the array index), so shared links survive reordering. Must match sidebar_nav.html. */}}
-    {{ $slug := $sc.name | lower | replaceRE "[^a-z0-9]+" "-" | replaceRE "^-+|-+$" "" }}
+    {{/* Stable, human-readable anchor slug derived from the name (not the array index), so shared links survive reordering. */}}
+    {{ $slug := partial "clusters/sc_slug.html" $sc.name }}
     {{ $scid := printf "c%d-%s" (int $cluster.number) $slug }}
-    <div class="acc-section" id="{{ $scid }}">
+    {{ $lp := index $lpSets $slug }}
+    <div class="acc-section" id="{{ $scid }}"{{ if $lp }} data-lp{{ end }}>
       <div class="acc-header" role="button" tabindex="0">
         <span class="acc-chevron">&#9656;</span>
-        <h3 class="acc-label">{{ $sc.name }}</h3>
+        <h3 class="acc-label">{{ $sc.name }}{{ if $lp }}<span class="lp-dot" role="img" title="{{ $lpLabel }}" aria-label="{{ $lpLabel }}"></span>{{ end }}</h3>
         <span class="acc-count"><span class="acc-count-match">{{ len $sc.publications }}</span> / {{ len $sc.publications }}</span>
         <button type="button" class="acc-copy-link" data-anchor="{{ $scid }}" aria-label="Copy link to this sub-cluster" title="Copy link to this sub-cluster">
           <svg viewBox="0 0 16 16" fill="none" stroke="currentColor" stroke-width="1.4" aria-hidden="true"><path d="M6.5 9.5l3-3M7 4.5l1-1a3 3 0 014.25 4.25l-1 1M9 11.5l-1 1a3 3 0 01-4.25-4.25l1-1"/></svg>
@@ -70,6 +75,32 @@ <h3 class="acc-label">{{ $sc.name }}</h3>
         <p class="sc-description">{{ $sc.description }}</p>
         {{ end }}
 
+        {{ with $lp }}
+        {{/* Teaching materials: one chip per file label, one link per format */}}
+        {{ $files := .files }}
+        <aside class="lp-strip" aria-label="Teaching materials: {{ .title }}">
+          <span class="lp-strip__label">Teaching materials{{ with .heading }}: <span class="lp-strip__heading">{{ . }}</span>{{ end }}</span>
+          <div class="lp-strip__chips">
+            {{ $labels := slice }}
+            {{ range $files }}{{ if not (in $labels .label) }}{{ $labels = $labels | append .label }}{{ end }}{{ end }}
+            {{ range $label := $labels }}
+            <span class="lp-chip">{{ $label }} <span class="lp-chip__formats">(
+              {{- range $fi, $f := where $files "label" $label -}}
+              {{- if $fi }} &middot; {{ end -}}
+              <a href="{{ $f.url }}" aria-label="{{ $label }} ({{ $f.format }})">{{ $f.format }}</a>
+              {{- end -}}
+            )</span></span>
+            {{ end }}
+          </div>
+          <p class="lp-strip__meta">
+            {{ with .creators }}By {{ delimit . ", " " and " }} &middot; {{ end }}
+            {{- with .reviewers }}reviewed by {{ delimit . ", " " and " }} &middot; {{ end }}
+            <a href="https://creativecommons.org/licenses/by-nc-sa/4.0/" target="_blank" rel="noopener license">CC BY-NC-SA 4.0</a> &middot;
+            <a href="{{ .record }}" target="_blank" rel="noopener">Zenodo record</a>{{ with .doi }} (<a href="https://doi.org/{{ . }}" target="_blank" rel="noopener">doi:{{ . }}</a>){{ end }}
+          </p>
+        </aside>
+        {{ end }}
+
         {{ if $sc.publications }}
         {{ $pubCards := hugo.Data.pub_cards }}
         <div class="fr-cards-list">
diff --git a/layouts/partials/clusters/clusters_controls.html b/layouts/partials/clusters/clusters_controls.html
index 673037fa735..9b8d217bf5c 100644
--- a/layouts/partials/clusters/clusters_controls.html
+++ b/layouts/partials/clusters/clusters_controls.html
@@ -32,6 +32,15 @@
         <span>Show specialist resources</span>
       </label>
     </div>
+    {{/* Lesson-plan filter; also the legend for the green dot used on headers and in the sidebar */}}
+    {{ if partialCached "clusters/lesson_plans.html" "lesson-plans" }}
+    <div class="fr-filter-group">
+      <label class="fr-specificity-toggle lp-filter-toggle">
+        <input type="checkbox" id="lp-filter-checkbox">
+        <span>Only sub-clusters with <span class="lp-dot" aria-hidden="true"></span>lesson plans</span>
+      </label>
+    </div>
+    {{ end }}
     <button type="button" class="fr-clear-btn" id="fr-global-clear" hidden
             aria-label="Clear all filters and show everything">Clear filters</button>
   </div>
diff --git a/layouts/partials/clusters/lesson_plans.html b/layouts/partials/clusters/lesson_plans.html
new file mode 100644
index 00000000000..7272c431a8e
--- /dev/null
+++ b/layouts/partials/clusters/lesson_plans.html
@@ -0,0 +1,22 @@
+{{- /* Returns the lesson-plan sets from data/lesson_plans.json (cluster number -> sub-cluster slug -> set).
+     Fails the build when a key matches no cluster or sub-cluster in clusters_v4.json, so a renamed
+     sub-cluster cannot silently drop its materials. Call via partialCached so the check runs once. */ -}}
+{{- $sets := dict -}}
+{{- with hugo.Data.lesson_plans -}}{{- $sets = .sets | default dict -}}{{- end -}}
+{{- $clusters := hugo.Data.clusters_v4.clusters -}}
+{{- range $ck, $bySlug := $sets -}}
+  {{- $match := false -}}
+  {{- range $clusters -}}{{- if eq (printf "%d" (int .number)) $ck -}}{{- $match = . -}}{{- end -}}{{- end -}}
+  {{- if not $match -}}
+    {{- errorf "data/lesson_plans.json: cluster key %q matches no cluster in clusters_v4.json" $ck -}}
+  {{- else -}}
+    {{- $slugs := slice -}}
+    {{- range $match.sub_clusters -}}{{- $slugs = $slugs | append (partial "clusters/sc_slug.html" .name) -}}{{- end -}}
+    {{- range $sk, $_ := $bySlug -}}
+      {{- if not (in $slugs $sk) -}}
+        {{- errorf "data/lesson_plans.json: key %q/%q matches no sub-cluster of cluster %s in clusters_v4.json" $ck $sk $ck -}}
+      {{- end -}}
+    {{- end -}}
+  {{- end -}}
+{{- end -}}
+{{- return $sets -}}
diff --git a/layouts/partials/clusters/sc_slug.html b/layouts/partials/clusters/sc_slug.html
new file mode 100644
index 00000000000..68ab8b0850a
--- /dev/null
+++ b/layouts/partials/clusters/sc_slug.html
@@ -0,0 +1,2 @@
+{{- /* Returns the anchor slug for a sub-cluster name. Sub-cluster ids (c<N>-<slug>), sidebar links and the keys of data/lesson_plans.json all use it. */ -}}
+{{- return (. | lower | replaceRE "[^a-z0-9]+" "-" | replaceRE "^-+|-+$" "") -}}
diff --git a/layouts/partials/clusters/sidebar_nav.html b/layouts/partials/clusters/sidebar_nav.html
index c39c0cef17c..5b4e7343f61 100644
--- a/layouts/partials/clusters/sidebar_nav.html
+++ b/layouts/partials/clusters/sidebar_nav.html
@@ -3,6 +3,7 @@
 {{ $arrowColors := .arrowColors }}
 {{ $link_mode := .link_mode | default "anchor" }}
 {{ $activeN := int (.active_cluster_number | default -1) }}
+{{ $lpLabel := "Has lesson plans and slides" }}
 
 <div class="col-lg-4 col-xl-3 clusters-sidebar" id="clusters-sidebar">
   <div class="clusters-sidebar-inner">
@@ -13,11 +14,12 @@
       {{ $cn := int $cluster.number }}
       {{ $isActive := eq $cn $activeN }}
       {{ $clusterHref := cond (eq $link_mode "subpath") (printf "/clusters/cluster-%d/" (int $cluster.number) | relURL) (printf "#%s" $cid) }}
-      <div class="cluster-nav-group" data-cluster="{{ $cid }}">
+      {{ $lpSets := index (partialCached "clusters/lesson_plans.html" "lesson-plans") (printf "%d" $cn) | default dict }}
+      <div class="cluster-nav-group" data-cluster="{{ $cid }}"{{ if $lpSets }} data-lp{{ end }}>
         <a href="{{ $clusterHref }}" class="cluster-nav-heading"{{ if $isActive }} aria-current="page"{{ end }}>
           {{ $arrowColor := index $arrowColors (mod $ci (len $arrowColors)) }}
           <span class="cluster-nav-toggle" style="color:{{ $arrowColor }};">{{ if $isActive }}&#9662;{{ else }}&#9656;{{ end }}</span>
-          {{ $cluster.name }}
+          <span>{{ $cluster.name }}{{ if $lpSets }}<span class="lp-dot" role="img" title="{{ $lpLabel }}" aria-label="{{ $lpLabel }}"></span>{{ end }}</span>
         </a>
         <ul class="cluster-nav-subs" style="display:{{ if $isActive }}block{{ else }}none{{ end }};">
           {{/* Featured "Recommended" link — first if present */}}
@@ -42,17 +44,17 @@
           </li>
           {{ end }}
           {{ range $si, $sc := $cluster.sub_clusters }}
-          {{/* Slug must match cluster_section.html so the anchor target exists. */}}
-          {{ $slug := $sc.name | lower | replaceRE "[^a-z0-9]+" "-" | replaceRE "^-+|-+$" "" }}
+          {{ $slug := partial "clusters/sc_slug.html" $sc.name }}
           {{ $scid := printf "c%d-%s" (int $cluster.number) $slug }}
           {{ $subHref := printf "#%s" $cid }}
           {{ if and (eq $link_mode "subpath") (not $isActive) }}
             {{ $subHref = printf "/clusters/cluster-%d/#%s" (int $cluster.number) $scid | relURL }}
           {{ end }}
-          <li class="nav-item">
+          {{ $lp := index $lpSets $slug }}
+          <li class="nav-item"{{ if $lp }} data-lp{{ end }}>
             <a href="{{ $subHref }}" class="nav-link sc-nav-link" data-cluster="{{ $cid }}" data-tab="{{ $scid }}-tab">
               {{ $sc.name }}
-              <span class="badge badge-pill">{{ len $sc.publications }}</span>
+              <span class="badge badge-pill">{{ if $lp }}<span class="lp-dot" role="img" title="{{ $lpLabel }}" aria-label="{{ $lpLabel }}"></span>{{ end }}{{ len $sc.publications }}</span>
             </a>
           </li>
           {{ end }}
diff --git a/static/js/featured-resources.js b/static/js/featured-resources.js
index 27d841308e6..628c3c4c903 100644
--- a/static/js/featured-resources.js
+++ b/static/js/featured-resources.js
@@ -626,6 +626,9 @@
     var specCheckbox = document.getElementById('fr-global-specificity-checkbox');
     var searchInput = document.getElementById('clusters-inline-search-input');
     var clearBtn = document.getElementById('fr-global-clear');
+    /* Lesson-plan checkbox: sets .lp-filter-on on the layout; CSS then hides clusters,
+       sub-clusters and sidebar entries without [data-lp]. It filters sections, not cards. */
+    var lpCheckbox = document.getElementById('lp-filter-checkbox');
 
     // --- Pre-cache card data so filtering never queries the DOM for text ---
     var sectionCache = [];
@@ -664,6 +667,7 @@
         body: body,
         chevron: header ? header.querySelector('.acc-chevron') : null,
         ownText: ownText,
+        hasLp: section.hasAttribute('data-lp'),
         cards: cards
       });
     });
@@ -682,12 +686,15 @@
 
     if (specCheckbox) specCheckbox.addEventListener('change', applyGlobalFilters);
 
+    if (lpCheckbox) lpCheckbox.addEventListener('change', applyGlobalFilters);
+
     if (clearBtn) {
       clearBtn.addEventListener('click', function () {
         if (searchInput) searchInput.value = '';
         resetGroupToAll(focusGroup);
         resetGroupToAll(typeGroup);
         if (specCheckbox) specCheckbox.checked = false;
+        if (lpCheckbox) lpCheckbox.checked = false;
         applyGlobalFilters();
         if (searchInput) searchInput.focus();
       });
@@ -722,7 +729,13 @@
       var showNarrow = specCheckbox ? specCheckbox.checked : false;
       var query = searchInput ? searchInput.value.toLowerCase().trim() : '';
       var tokens = query ? query.split(/\s+/) : [];
-      var isFiltered = activeFocus !== 'all' || activeType !== 'all' || tokens.length > 0;
+      var lpOnly = lpCheckbox ? lpCheckbox.checked : false;
+      document.querySelectorAll('.clusters-layout').forEach(function (el) {
+        el.classList.toggle('lp-filter-on', lpOnly);
+      });
+      /* Counting the lesson-plan toggle as a filter auto-expands the remaining sub-clusters,
+         so their teaching-materials strips are visible straight away. */
+      var isFiltered = activeFocus !== 'all' || activeType !== 'all' || tokens.length > 0 || lpOnly;
       if (clearBtn) clearBtn.hidden = !isFiltered;
 
       // --- Pass 1: compute visibility from cached data (no DOM reads) ---
@@ -756,6 +769,10 @@
           }
         }
 
+        /* With the lesson-plan filter on, a sub-cluster with a set stays open even if no card
+           matches the other filters: its teaching-materials strip is what the user asked for. */
+        if (lpOnly && sec.hasLp) ownTextMatches = true;
+
         sectionResults.push({ matchCount: matchCount, cardVis: cardVis, ownTextMatches: ownTextMatches });
       }