Test and reinforce your students knowledge of tables, graphs and equations. This activity features an oversized puzzle that results in the shape of a triangle. Students problem solve to find the matching pieces. It is a good idea to copy on card stock and then laminate to use of years to come. I have labeled each triangle piece with a number. After printing, draw a light corresponding number on the back of each piece. The numbers begin at the top of the triangle and continue from left to right on each row. This will help students to self check at the end of their activity. Enjoy!