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Backyard Science Lab for Kids offers 52 fun science activities for families to do together
no glue or additional tools are required
Your relaxing day at the museum is quickly derailed by an incredible adventure
The Cabriolet can go forward or back
GraviTrax Jumper Size:Ages 8+ Backyard Science Lab for KidsMove up a level! The Jumper lifts your marble to a higher level and at the same time creates a transit tunnel. Combine the Jumper with your GraviTrax Starter Set for an exciting addition to your marble run. Can you get your marbles jumping? Contents Instructions 1 jumper 1 long plastic track 2 medium plastic tracks 3 short plastic tracks