You will need the Exploring Creation with Mathematics Basic Set for your child's level, which includes the spiral bound Student Text and Workbook and the Teaching Guide & Answer Key.
You will also need to gather some common household items and purchase a few common math manipulative items to fully use this course. Everyday household items include things like dry beans for counting. Math manipulatives include items like a base ten block set. A complete supply list is available for each grade below, and materials are reused within different grades as applicable for concepts being taught.