GraviTrax Expansion Building STEM Activity, Multi, 29 Pieces - GX27602 siku Batteries: Required (6 x AA

Batteries: Required (6 x AA

running the spheres up and down the track

the Smartivity Roller Coaster Marble Slide teaches concepts such as collisions

Encourages kids to explore their creativity

GraviTrax Expansion Building STEM Activity, Multi, 29 Pieces - GX27602 siku Batteries: Required (6 x AAThe GraviTrax track can be infinitely extended with various addons for endless building and racing enjoyment Increase the possible combinations and construct even more complex ball track systems. Includes 2x bottom plates, 1x transparent layer, 8x large height blocks, 4x small height blocks, 2x switches, 1x 3in1, 1x swivel, 1x target ladder, 4x base blocks and inserts, 2x catchers, 1x free fall, 1x splash, 1x target. The GraviTrax STEM track system