Sid wonders how he can lift his heavy box of toys way up to his treehouse. After investigating at school, Sid discovers that a pulley is the perfect simple machine to help lift heavy things up to high places, like a tree house!
Visit the Website: http://pbskids.org/sid/
Episode #124 / Length: 28 minutes
On TV
Thursday, March 21st at 10:30 AM on KLRU
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