This product is designed to be used as a math center in Kindergarten or 1st grade. First, choose which set you would like to use (either sums to 10 or sums to 20). I recommend either laminating the eggs or copying them on cardstock. Cut them out, and cut each egg apart on the line in the middle. Students then can match the pieces together based on their color, determine the sum, and record the addition sentence on the recording sheet provided.