Tumbling Hedgehog by Thames & Kosmos

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Build your own adorable robotic pet hedgehog that tumbles, rolls, spins and scurries!

Assemble a real robot that looks like a cute hedgehog. Learn how the inner mechanical workings enable a robot to move. Learn about gears, motors, sound sensors, LEDs, and the other components of this funny little pet.

The robot has a built-in sound sensor and is programmed to react to different sounds. After you build it, you can play with it by making sounds and watching it tumble, roll, spin around, bristle its spines, and scurry around. Clap once, and the hedgehog will roll into a ball and tumble backwards. Clap multiple times, and the hedgehog will count your claps and tumble as many times as you instructed with your claps. You can also get the hedgehog to bristle its spines and act in a playful way with different patterns of claps. The hedgehog’s eyes light up with LEDs.

Features & Pieces:

  • 172 pieces
  • Built-in sound sensors
  • Responds to claps & sounds
  • LED eyes light up
  • Full-color, 40-page instruction manual
  • Includes comic book style about Nuna the Hedgehog
  • Requires 4 AAA batteries (not included)
  • Some assembly tools required (see back of box)


  • 7 & up with adult help
  • 10 & up with independent play

This kit teaches, encourages & supports:

  • Physical Development
  • Cognitive Learning
  • Exploration & Discovery

Specific Benefits:

  • Teaches how robots work
  • Introduces STEM learning principles
  • Develops fine motor skills
  • Supports following & understanding instructions

WARNING: CHOKING HAZARD. Small parts are not suitable for children under 3 years of age.

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