I created this koosh ball activity to help your kiddos with learning early subtraction. Each slide has a domino that is missing dots on one side. The number box states the total number of dots that should be on the domino. Students will use the SMART pen to color in the missing dots. Then they will write a subtraction number sentence.
There are 16 slides with a problem on each. Use a koosh ball or simply tap on a fly to move to a new problem. Great for a small group or whole group lesson.
*This is a SMART Notebook file. Make sure you have SMART Notebook on your computer.*