This easy, print and use resource contains a teacher guide, a 2 helpful hand-outs to review key concepts first, and the geoboard checklist challenge page. Students will use their geoboards and rubberbands to create angles of certain degrees (acute, obtuse, right, 30°, 60°, 45°, 180°, 120°) and triangles classified by the angles and sides (scalene, equilateral, isosceles, right triangle, acute triangle, obtuse triangle). This is great to use whole group, in centers, or small groups. It is great f