Provide students with problems involving two expressions where one has a missing addend. For example: There were two windows with two ladybugs on each window. Both sets of ladybugs have the same number of spots. If one window has ladybugs with three spots and four spots, and the other window has one ladybug with 2 spots, how many spots does the other lady bug have? Write an equation to solve this problem. Intervention Complete this task in a smaller setting. Students may work in pairs and the sum may not be greater than five. Gradually increase the sum until the concept is grasped. Lots of Dots How Many Counters? Materials: Blank ten-frames, one or more per player Counters A number cube Players: Two
Provide students with problems involving two expressions where one has a missing addend. For example: There were two windows with two ladybugs on each window. Both sets of ladybugs have the same number of spots. If one window has ladybugs with three spots and four spots, and the other window has one ladybug with 2 spots, how many spots does the other lady bug have? Write an equation to solve this problem. Intervention Complete this task in a smaller setting. Students may work in pairs and the sum may not be greater than five. Gradually increase the sum until the concept is grasped. Lots of Dots How Many Counters? Materials: Blank ten-frames, one or more per player Counters A number cube Players: Two
1st-Math-Unit-3.docx