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Academy Da Vinci Series - Rolling Ball Timer

Academy Da Vinci Series - Rolling Ball Timer

Plastic Kitset

Academy 18174 Rolling Ball Timer - Da Vinci Series No. 12 (Snap Kit)

Da Vinci Machines - Educational

Note: Requires assembly. Snap together kit- no glue, paint or batteries required.

DESCRIPTION
The Rolling Ball Timer uses the law of motion, as well as the concept of gravity and kinetics to measure the passage of time.

$36.50