Arm your child with a ruler or tape measure, and set her loose to take stock of the world.
Kids love rulers and tape measures. Designate a place in your home where you can regularly measure and mark your child’s height. Give your child a tape measure or ruler and ask him to measure the height of a chair, the length of a rug, the width of a newspaper or any other household objects. Challenge your child by asking him to compare measurements, like: Which is wider, the newspaper or the phonebook?