Give these bright puzzles to budding Einsteins at a science-themed party or hand them out as STEM toys in the classroom. These brain teasers will alleviate boredom, anxiety and stress in older children, who also will feel a sense of accomplishment and pride when they've mastered the puzzle.
• Material: Plastic.
• Size: Approx. 2 1/2" - 3 1/4" diam. when assembled.
• Includes instructions.