This sample set of Heidisongs worksheets set is designed to give children practice counting, identifying, and writing the numbers from 11-20, while using fun "creature" designs for the numbers!These tricky numbers are often very difficult for children to master, and take a lot of extra repetition and reinforcement before children recognize them with automaticity. Also, counting out quantities greater than ten can also be a challenge for many children, and requires extra practice. These worksheet