building a modular cube
  1. Remind your child that you counted 12 edges on the cube. Say: We will use one toothpick for each edge. How many toothpicks will we need?
  2. Touch and count each corner on the box (or block) to show there are 8 altogether. Say: A cube has 8 corners. We will use a small play dough ball for each corner. How many do we need?
  3. Help your child build the cube in stages:
    • Build a square for the base.
    • Attach four toothpicks to the corners of the base so they stand up.
    • Build the top square and attach it to the four toothpicks that are standing up.