George, the Man in the Yellow Hat, and Marco head to the beach and dig for clams, swim with dolphins, and bury treasure, but when the water comes in and takes their treasure away, they learn all about tides.

Helping the science museum unveil a new dinosaur skeleton, George notices that the specimen is missing one bone, so he teams up with the man with the yellow hat to retrace their steps and discover where the bone went missing.

"George loves summer nights in the country--that's where he does his best stargazing. When his friend Bill says that nobody knows how many stars there are, George is determined to count! But how will he keep track? Come along as George learns all about stars, constellations, and the night sky"--Publisher.

First, George accidentally frees some of the animals at the zoo. Then, George discovers that different animals make different tracks. Next, George learns that all living things behave in different ways. Then, George designs and builds the perfect pigeon perch. Next, George must gather and analyze evidence to prove that Gnocchi has been wrongfully accused. Then, George realizes that dogs come in all different shapes and sizes. Next, George learns a...

After hearing about the annual boxcar derby, George enlists the help of his friend Allie to build a car, learning about simple physics and the parts of a car in the process of trying to win the race.