# Geometry

Canonical: https://manipulatives.org/topics/geometry/

Build, sort, move, and describe shapes using their properties.

Geometry tasks can begin with a simple action: make a shape, turn it, or replace one piece with several others. The useful discussion concerns properties that stay the same and properties that change.

[Pattern blocks](https://manipulatives.org/manipulatives/pattern-blocks/) and [tangrams](https://manipulatives.org/manipulatives/tangrams/) support composing regions. [Geoboards](https://manipulatives.org/manipulatives/geoboards/) foreground sides, vertices, and boundaries, while [geometric shapes](https://manipulatives.org/manipulatives/geometric-shapes/) support sorting attributes and composing pictures.

Avoid making orientation part of a shape's name. A square remains a square when rotated onto a corner. Invite learners to give reasons based on sides and angles, and to test a description using an unfamiliar example.

## Tools

- [Geoboards](https://manipulatives.org/manipulatives/geoboards/)

- [Geometric Shapes](https://manipulatives.org/manipulatives/geometric-shapes/)

- [Pattern Blocks](https://manipulatives.org/manipulatives/pattern-blocks/)

- [Sketch Pad](https://manipulatives.org/manipulatives/sketch-pad/)

- [Tangrams](https://manipulatives.org/manipulatives/tangrams/)

## Articles

- [A whole new way to see fractions](https://manipulatives.org/blog/fractions-with-pattern-blocks/)