Thames & Kosmos Remote-Control Machines: Construction Vehicles | Science & Engineering Experiment Stem Kit | Build 8 Real Working Models | Parents' Choice Silver Award Winner |Astra Best Toys for Kids

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  • Explore the physics of force, torque, and simple machines By build 8 models of different construction vehicles
  • Over 225 interchangeable building pieces
  • Includes 64-page, illustrated experiment manual and Assembly guide