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the Smartivity Roller Coaster Marble Slide teaches concepts such as collisions
1x parasol
running the spheres up and down the track
His belt rotates
Nancy loves using big fancy words such as "iridescent"
GraviTrax Expansion Building STEM Activity, Multi, 29 Pieces - GX27602 siku the Smartivity Roller Coaster MarbleThe 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
US$ 31.00
US$ 67.73
US$ 1065.00
US$ 50.05
