Exploring things that fit together is a favorite activity of babies. They love figuring things out! Get out some nesting blocks, stacking rings, or just a set of plastic mixing bowls or measuring cups that nest and let your little one play. They are having a great time while learning that some things have an order.
Hey diddle, diddle,
The cat and the fiddle,
The cow jumped over the moon.
The little dog laughed to see such sport,
And the dish ran away with the spoon!