Use these 24 fact families strips at your math center to develop addition and subtraction skills with your second and third grade students. Cut and laminate the strips and place them at a center with dry erase markers. Students write 2 addition sentences and 2 subtraction sentences that are part of the "fact family". They can then switch with a partner to check each others' work.
You can also find this resource as part of my Math Centers Bundle
©The Teaching Rabbit