Thames & Kosmos Gecko Marble Run Expansion Set - STEM Building Toy for Kids with Marble Run Snake Track - Perfect for Creative Play & Educational Fun at Home or School

With the snake, you can send our marbles through a maze of sharp curves and see how it affects their speed. But watch out: only if you place the snake correctly in your marble run will the marbles make it through.

The additional track elements mean that the marble run reach is expanded, so you can cover even more tiles, doors, windows, shelves and other surfaces.

Slow down and maintain control of the track with the stop and go zigzag maze for your marbles. Experiment and find out!

Gecko Run Snake Expansion 550205

• Suitable from 8 years
• Full instructions
• Introduces science concepts including chaos theory
• Tracks made from renewable raw materials
• Configuration on smooth surfaces
• 814743018792