Print and laminate the Four-Square mats, or put them in sheet protectors. Students will use a dry erase marker to do the work and simply erase when finished so you have a reusable product.
In teams of four, students work to answer one of the given problems on the mat, using their square (A-D) to show their work.
Each team then adds their individual responses together and writes the sum in the center of the work mat. The team raises their hands to show they are ready to be checked.
The teacher, or pre-selected student checks the sum. If it is correct, they erase their mat and get another one. If the answer is incorrect, the team must turn the mat and check each other’s work to find the error.