Serve up this pretend play activity to your preschooler to give her counting skills a healthy boost.

In this activity, students build a house of sticks, just like the second little pig in the classic story, The Three Little Pigs. Then, they program an educational robot to push down the house, much like the wolf who “blows the house down.”

You don't need to spend big bucks to buy a pre-boxed version of a matching game at the store. You can make your own easily. Here's how:

This experiment works due to a simple principle: plants need light. Build a shoebox maze and watch the plant work though the obstacle course, searching for sun.