Digital Self-Checking Boom Cards is a fun and challenging way for students to practice 3rd grade measurement skills. This deck will help reinforce how to find the perimeter of polygons.Polygons include: triangles, squares, rectangles, trapezoids, pentagons, and hexagons. Students will calculate the perimeter of the figure and type in their response.Aligned to CCSS 3.MD.C.8 Find the perimeter of polygons. The Boom Cards Include: • Built In Answer Key• Sharing Instructions• Editable Google Slide