MindWare KEVA Contraptions Reactions Planks — 178 Building Planks (191-Piece) Marble Run Kit for Ages 7+

Unlock Creative Engineering with KEVA Contraptions Reactions

MindWare's KEVA Contraptions Reactions Planks deliver a free-form, wood-based building experience designed to spark curiosity about balance, geometry, and the basics of physics. Kids can sketch ideas in three dimensions, test them, and iterate as structures rise with satisfying ease—no glue or connectors required. This open-ended play invites exploration, experimentation, and quiet problem solving that fits a busy imagination.

What’s in the box

• 178 wooden planks for diverse builds
• 8 durable dowels to connect components
• 2 reaction balls to ignite motion moments
• 1 bell and 1 string to add audio cues
• 1 bowling pin and 1 toy car for kinetic play
• 16-page illustrated idea book with project prompts

Built for curious minds

As children stack and balance pieces, ideas about leverage, symmetry, and geometry emerge. The set’s design supports exploration of architectural concepts and design thinking, offering a tangible way to observe cause and effect in action while keeping play approachable and engaging.

Play and learning scenarios

• Marble runs with tunnels, ramps, and twists that demonstrate motion and timing
• Chain reactions where a marble’s momentum interacts with pins, bells, and other elements
• Colorful, one-of-a-kind constructions that highlight creativity and pattern-making

Quality and ease of use

Precision-cut wood ensures snug, repeatable builds that stack with confidence. The no-glue design makes setup quick and cleanup simple, so kids can dive into a new project or reconfigure a layout in minutes.