Dig Into Geodes Magnets GraviTrax is the STEM track

GraviTrax is the STEM track system from Ravensburger

The patterns change size as the arc of the pendulum changes

The two parallel tracks are assembled using suspension wires

Yavin 4 Rebel Base buildable playset (75365) – Recreate iconic Star Wars: A New Hope scenes with this highly detailed LEGO® brick-built model of Yavin 4 Rebel Base and a Y-wing starfighter

Dig Into Geodes Magnets GraviTrax is the STEM trackBe a rock hound! Just like a real explorer, you'll be digging up real geodes. There are 2 geodes inside. Dig out the geodes hidden in the rock. Break it open and discover its inner wonders. Learn about geology through the included adventure guide. A geode is a round rock that contains a hollow cavity lined with crystals. Not all geodes are the same open yours to discover the hidden treasure inside. Kit includes: 1 earthen block 1 wooden hammer 1