This center is modeled directly after the triangle fact cards that you can buy in stores, but these are smaller and easier for little hands to use when quizzing each other!
The top of each triangle holds the answer to a doubles fact (ex: 8), while the bottom two corners hold the doubles (ex. 4, 4). Students can cover any of the corners to create a doubles addition or subtraction fact. If the top is covered, students must add the bottom two corners to find the answer, and if one corner is covered, students will need to subtract the top from the remaining corner to find the answer.
Use these as a center or for early finishers to promote fact fluency with doubles!
Enjoy and please review!