An array can be represented in terms of rows or columns. Can your child easily differentiate between rows and columns? You can use this simple worksheet to see how well they understand the concept of arrays. In this printout, your child’s task is simple enough – check all the arrays that match the equation 5+5+5=15. Help your child count the objects in each group. Then, ask them which arrays have 15 objects in them. Tell them to check the boxes underneath the correct arrays.