# Algebra and Geometry

The Algebra and Geometry library provides access to videos, animations, and interactivities that will encourage students to find connections between key high school math concepts. The selection of activities, assessments, and teacher support for each topic can be customized to ensure rigor and balance for all types of learners.

## Try it Out

### Vector and Matrix Video: Science of NFL Football—Vectors

This interesting video from the National Science Foundation and NBC explores the calculations of vectors in passing and receiving a football.

### Polynomials Video: How Do You Multiply Polynomials?

This Virtual Nerd video provides step-by-step instructions for multiplying polynomials. The clear instructions can serve as pre-teaching or review for students.

### Measurement and Dimension Interactivity: Euler's Theorem

Use this fun, interactive game to help students use Euler's Theorem to determine measurements of polyhedras.

### Equations and Inequalities Video: All I Do Is Solve

This rap video from SchoolTube explains three different methods for solving equations—graphing, elimination, and substitution.

### Similarity, Triangles, Trigonometry Image: Triangle in Rectangle

Use this image of two right triangles within a rectangle to help students understand similarity by showing students how to use congruence and similarity criteria for triangles to solve problems and to prove relationships in geometric figures.

### Congruence Enrichment: Congruence Transformations

Use this editable worksheet as an enrichment activity focusing on congruence transformations. An Answer Page is also provided.