Polypad Lesson Idea – Integer Addition with Algebra Tiles

Explore how you can use Polypad's number and algebra tiles to teach about adding negative numbers. Polypad is the ultimate collection of virtual manipulatives: polygons, number and algebra tiles, fraction bars, Tangram, pentominoes, dice, and much more. It works on all devices and is completely free to use: https://mathigon.org/polypad You can find more tutorials, lesson plans and teacher resources at https://mathigon.org/teachers