This unit teaches Common Core Measurement Standards 1.G.1, 2 and 3.This 15 day unit has lesson plans, a student booklet, 3 tests, and homework practice pages. Here is an outline of the lessons.Lesson 1: Students tell the defining attributes of a triangle and a circle. Lesson 2: Students tell the defining attributes of a rectangle and a square.Lesson 3: Students tell the defining attributes of a trapezoid and a hexagon.Lesson 4: Students use various materials to build a triangle, rectangle, squar