This activity will strengthen and review your students skills in breaking numbers 11-20 into tens and ones and understanding this concept. I have made butterflies with popsicle stick bundles of tens and ones and also with tens frames. They will need to match the butterflies with baby butterflies with the numbers on them. I have also included a worksheet for extra practice. Have fun learning and playing!
CCSS.Math.Content.K.NBT.A.1 Compose and decompose numbers from 11 to 19 into ten ones and some further ones, e.g., by using objects or drawings, and record each composition or decomposition by a drawing or equation (such as 18 = 10 + 8); understand that these numbers are composed of ten ones and one, two, three, four, five, six, seven, eight, or nine ones.