# ALEX Classroom Resources

ALEX Classroom Resources
Subject: Mathematics (9 - 12), Mathematics (9 - 12)
Title: Can You Solve This Pier Puzzle? | Physics Girl
URL: https://aptv.pbslearningmedia.org/resource/pier-puzzle-physics-girl/pier-puzzle-physics-girl/
Description:

This math brainteaser challenges you to find a simple, elegant solution to a seemingly complex problem! Students will use geometry principles and their knowledge about triangles to solve this puzzle. Can you figure it out?

Subject: Mathematics (9 - 12), Mathematics (9 - 12)
Title: Geometry Module 1, Topic E: Proving Properties of Geometric Figures
URL: https://www.engageny.org/resource/geometry-module-1-topic-e-overview
Description:

In Module 1, Topic E, students extend their work on rigid motions and proofs to establish properties of triangles and parallelograms. In Lesson 28, students apply their recent experience with triangle congruence to prove problems involving parallelograms. In Lessons 29 and 30, students examine special lines in triangles, namely, midsegments and medians. Students prove why a midsegment is parallel to and half the length of the side of the opposite triangle. In Lesson 30, students prove why the medians are concurrent.

Subject: Mathematics (9 - 12), Mathematics (9 - 12)
Title: Geometry Module 1, Topic G: Axiomatic Systems
URL: https://www.engageny.org/resource/geometry-module-1-topic-g-overview
Description:

In Module 1, Topic G, students review material covered throughout the module. Additionally, students discuss the structure of geometry as an axiomatic system.

ALEX Classroom Resources: 3