3D houten puzzel speelgoed voor kinderen

This set includes a wooden puzzle, mechanical gear mechanism, gravity-driven marble run, and precision laser-cut pieces designed for educational play and problem-solving.

• The description claims the puzzle improves problem-solving and spatial insight.
• The description claims the gear mechanism provides a practical introduction to mechanical principles and physics.
• The description claims the marble run demonstrates physical concepts like momentum and gravity.
• The description claims the pieces fit together smoothly without glue or special tools.