Triangle Congruence Proofs Task Cards & Scavenger Hunt | SSS SAS ASA AAS HL

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Differentiate triangle congruence proofs in a single class period — without writing three separate curricula. This 90-page scaffolded bundle moves students from fill-in-the-reason proofs to full two-column proofs, with explicit visual supports built in for Special Education and IEP learners.

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The TPT market is saturated with flat task card sets — 16 to 24 cards at a single difficulty level, no scaffolds, no SpEd supports. This bundle is built differently:

✓ THREE TIERS of 12 cards each (36 total) — students progress from fill-in-the-reason → fill-in-the-statement → full proofs from scratch ✓ SpEd MODIFIED VERSION — 4 proofs with enlarged diagrams, color-coded parts, and printed sentence stems ✓ SELF-CHECKING SCAVENGER HUNT — 8 cards that loop around the room with immediate feedback ✓ PROOF-OUTLINE ORGANIZER on every Tier A card — a visual Given → Identify → Choose → Conclude frame ✓ COLOR-CODED DIAGRAMS — red, blue, green tick marks for corresponding parts (also legible in black-and-white via single/double/triple tick counts) ✓ SENTENCE STEMS for reasoning — "Since ___ congruent to ___ by ___, we can conclude ___" ✓ DETAILED LUCID SOLUTIONS — every single proof includes a "Why this works" explanation paragraph in plain teacher-and-student-friendly language

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TEACHER SUPPORT (pages 4–11) • Teacher Notes with 4 differentiated usage options and a pacing guide • Special Education Supports & Differentiation Matrix • Triangle Congruence Concept Refresher (SSS, SAS, ASA, AAS, HL reference table) • Proof-Writing Toolkit with sentence stems and a complete reason bank

TIER A — FILL-IN-THE-REASON (12 task cards + 12 solutions) • Statements are given; students supply reasons from a word bank • Includes a 4-step proof-outline visual organizer on every card • Perfect entry point for IEP students and learners new to two-column proofs • Cards 1–3: SSS | Cards 4–6: SAS | Cards 7–9: ASA/AAS | Cards 10–12: HL

TIER B — FILL-IN-THE-STATEMENT (12 task cards + 12 solutions) • Reasons are given; students supply statements by reading the color-coded diagram • Builds diagram-reading fluency — the #1 skill gap in HS geometry • Cards 13–15: SSS | Cards 16–18: SAS | Cards 19–21: ASA/AAS | Cards 22–24: HL

TIER C — FULL PROOFS FROM SCRATCH (12 task cards + 12 solutions) • Diagram only; students construct the entire two-column proof • On-level target for a HS Geometry proofs unit • Cards 25–27: SSS | Cards 28–30: SAS | Cards 31–33: ASA/AAS | Cards 34–36: HL

SELF-CHECKING SCAVENGER HUNT (8 cards + answer loop key + 8 detailed solutions) • Post the 8 cards around the room in random order • Students solve a card, then walk to find the next card whose "Previous Answer" matches • If they can't find their answer, they know immediately they made a mistake — self-checking! • Loop closes after 8 problems; perfect for 25–30 minute activity

SPECIAL EDUCATION MODIFIED VERSION (4 proofs + 4 solutions) • One proof per method family (SSS, SAS, ASA, HL) • Enlarged 1.5× scale diagrams with color-coded corresponding parts • Sentence stem printed on every card • Reduced cognitive load matches typical IEP accommodation

STUDENT RECORDING SHEET — single printable page for all 36 cards + 8 hunt cards

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• SSS (Side-Side-Side) Congruence Postulate • SAS (Side-Angle-Side) Congruence Postulate • ASA (Angle-Side-Angle) Congruence Postulate • AAS (Angle-Angle-Side) Congruence Theorem • HL (Hypotenuse-Leg) Congruence Theorem • Reflexive Property of Congruence (shared sides/angles) • Vertical Angles Theorem • Alternate Interior Angles Theorem • Definition of Midpoint, Angle Bisector, and Perpendicular • Two-column proof structure and logical flow

Aligns with Common Core standard HSG-CO.B.8 and NYS Regents standard G.G.28.

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Option 1 — Sequential progression (3–4 days): Day 1: Tier A → Day 2: Tier B → Day 3: Tier C → Day 4: Scavenger Hunt review

Option 2 — Differentiated stations (1 day): Three stations (Tier A / B / C); students assigned by readiness; rotate every 15 minutes

Option 3 — Homework + review: Tier C cards for homework over 2 nights; scavenger hunt in class for self-checking review

Option 4 — IEP/SpEd pull-out: Modified version for the IEP setting; on-level Tier A cards for the mainstream setting

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"After 12 years teaching geometry, this is the first proofs resource that actually meets my IEP students where they are. The sentence stems and color-coded diagrams are game-changers." — beta-tester feedback

The three-tier structure means I can finally run one proofs lesson for my whole class — not three separate worksheets. My co-teacher and I just assign the tier that matches each student's readiness level.

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Format: PDF (print-ready, US Letter) Total pages: 90 File size: ~500 KB Fonts: embedded for crisp printing at any size Diagrams: 100% vector — sharp at any zoom

Print 2 task cards per page on cardstock (110 lb) and laminate for durability. Diagrams are color-coded but remain legible in black-and-white via tick-mark count.

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