My students love using these addition and subtraction cards to practice using the number line. Each child gets a set of cards and a number line to use. I change the counter for the number line to keep things fun. I have noticed an increase in Math fluency and math vocabulary since my students have been using these. Learning to use the number line strategy is a great way to improve math addition and subtraction skills. I hope your kiddos love using these at Guided Math groups as much as my students do!