# Proofs In Geometry

Unit 2: Reasoning & Proofs ~ Teaching Two-Column Proofs in High School Geometry

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### Introductory Geometry Proofs Cut and Paste Activity

In this activity students will cut strips of paper and assemble them into two-column proofs. The first two proofs are algebraic proofs, the third proof uses the segment addition postulate, and the fourth proof uses the definition of congruence. A "Hints Sheet" is included for struggling students.

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Activities for congruent triangle proofs in geometry

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Don't Panic, The Answer is 42: Intro to Proofs in Geometry

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### Algebraic Proofs Task Cards

Algebraic Proofs Task Cards - use as an intro to proofs in geometry

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A Better Approach to Introducing Two-Column Proof Writing in Geometry

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Hands on Math in High School: Made4Math Geometry Proofs

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Theorems, definitions, and postulates are represented using two dimensional blocks which are linked together to form logical chains of reasoning.

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Teaching is Forever: The Proof is in the Pudding...or the Proof Practice Book!

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Structuring Inquiry - Based Lessons in Secondary Math - Math Giraffe

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