Cat in the Hat Knows A Lot About That! - Clever Levers/Going, Going, Gong
The kids need to move a big rock in their backyard so they can plant an apple tree. The Cat takes them to Machine-a-Ma-Zoo, where they learn how a lever can solve their problem. Sally is playing a song on an instrument made up of different things in the Treehouse but she can't find the right note for her song. In Gongolia, they find out that bigger things make lower sounds and smaller things make higher sounds.
Series Website: http://pbskids.org/catinthehat/
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