Sidewalk Shape Game
Draw shapes on the sidewalk with chalk (do 2 or 3 of each shape if you have multiple children). Then make a game out of finding the shapes. For younger kids, you can just ask 'can you find the triangle' and have them go stand on it. For older kids, you can make it more of a race -- 'Can you find the square' and then everyone runs to stand on a square. A variation is to draw different colored shapes and have them find a specific colored shape 'find the pink rectangle'. There are many different ways that you can modify this activity so that it is always a challenge to your child.