### Geometry

#### Grades K-2

Geometry Walk

Interactive Geoboard

Investigating Triangles

I've Seen That Shape Before

Ladybug Adventures

Patterns Here, There and Everywhere

Plane Geometry

Puzzling Relationships: Tanagrams

RoboPacker: Experiencing spatial relationships

#### Grades 3 - 5

Archimedes' Puzzle

Describe the Graph

Geometric Solids and Their Properties

Geometry in the World of Art

Junior Architects

Mathematics and Children's Literature

Paper Quilts

Rescue Mission Game

Shape Up

#### Grades 6 - 8

Anglemania: An Overview of Angles (supplemental)

Graphing Points on a Coordinate Plane(incorporates Graph Mole)

An Introduction to the Coordinate Plane: Chameleon Graphing

Quad Squad: Describing and Classifying Quadrilaterals (supplemental)

Sports and Geometry

Triangles Side by Side: An Overview of Triangles (supplemental)

#### Grades 9 - 12

Dividing a Town into Pizza Delivery Regions

Fishing for the Best Prism

Fretting

Inequalities in Triangles

Math Online Activities (including Geometry)

A Teacher's Guide to Building the Icosahedron as a Class Project

Origami Directions for Making a Cube