MindWare KEVA Contraptions Reactions Planks Building Toy – 178 KEVA Building Planks (191 Piece Set) – Free-Form Wood Building Set for Kids to Create Their Own Ball Maze – Ages 7 & Up
Price: $56.95
(as of May 27, 2026 10:17:34 UTC – Details)
Product description
With no fixed rules or connectors, kids are free to experiment, envision new forms, and bring their creative ideas to life.
Stacking the planks with precision requires hand-eye coordination, especially when aiming for taller or more intricate structures.
Handling the solid pine planks strengthens fine motor skills as kids manipulate, place, and align the pieces.
As children stack planks and explore different structural forms, they directly engage with concepts of physical balance and stability.
1 Action Packed Reactions
2 Contraptions
3 Brain Builders
How is the Contraptions Reactions set different from standard KEVA planks?
Beyond 178 wooden planks, you get reaction pieces—bells, dowels, a bowling pin, string, balls, and more—to trigger chain-reaction events.
What will my child learn?
Hands-on lessons in balance, leverage, geometry, force and motion while they experiment with cause-and-effect.
Do the planks require glue?
No, precision-cut wood stacks perfectly—kids can redesign contraptions endlessly.
What ages is it for?
Suggested for ages 7 +—challenging enough for tweens but still safe and open-ended.
Does it come with build ideas?
Yes, a 16-page illustrated idea book jump-starts creative marble-run and chain-reaction challenges.
Comparison chart – KEVA engineering
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Price
$56.95$56.95
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$26.95$26.95
$119.99$119.99
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$59.95$59.95
$38.32$38.32
Age Recommendation
7+
7+
7+
7+
6+
6+
6+
STEM Skills
Physics • momentum
Force • angles
Engineering • balance
Engineering • scale
Architecture • history
Geometry • design
Robotics • logic
Primary Play Focus
Chain-reaction runs
Launch & land shots
Tall marble runs
Mega marble runs
Landmark replicas
Free-form towers
Robot maze design
Game Skill Level
Intermediate
Intermediate
Intermediate
Advanced
Intermediate
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Advanced
Number of Players
1+
1+
1+
1+
1+
1+
1+
STEM Toys That Teach: These KEVA blocks help kids gain first-hand experience with balance, leverage, geometry and the principles of physics while fostering an interest in architecture and design
Create Chain Reactions: Use the wooden building planks to build a marble run full of tunnels, ramps and other contraptions, then see if your KEVA ball sets off chain reactions like knocking over a bowling pin or ringing a bell
Unique Plank Building Block Set: This wood building set features traditional KEVA planks along with colored building planks and unique pieces to create one-of-a-kind KEVA ball run structures
No Hassle: These premium KEVA STEM planks are precision-cut from beautiful wood to stack perfectly time after time, no glue or connectors needed; simply unpack and build impressive KEVA structures
KEVA Contraptions Reactions includes 178 wooden planks for building, 8 dowels, 2 reaction balls, 1 bell, 1 string, 1 bowling pin, 1 toy car and a 16-page illustrated idea book (Ages 7 and up)
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