This Remote Control Machines: Space Explorers kit encourages kids to discover the basic concepts of robotics, machines & space exploration. Once construction is complete, discovery missions can begin in your backyard!

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These four metal cylinders have equal volume but different mass to demonstrate variations in density and specific gravity.

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Use this transparent, tubular spring scale to weigh an object in grams or Newtons by simply suspending from the hook.

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Study the friction between two surfaces and the forces on an inclined plane.

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A useful apparatus for demonstrating thermal expansion.

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This AC spark recording timer is used to measure velocity and acceleration of falling or moving objects in dynamics studies.

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A spring scale measures weight or force when an object is hung from its hook.

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This spring scale measures weight or force by hanging objects from its hook. Ideal for kids ages 8+ and suitable for classroom use.

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Cotton cable cord. Works well with our pulleys or for general use.

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Study Newton's laws of motion as you build rockets that soar up to 150 feet.

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Ideal for inclined plane studies.

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Now every home lab can include a study in motion dynamics.

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Encourage your budding engineer with these K'nex bridge-building projects.

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This 50 mm metal pulley is mounted in a clamp that can be attached to any board or table top up to 3 cm (1.18") thick.

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Discover how eight simple machines work as you construct a balance, wheelbarrow, scissors, a block and tackle, and more.

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Build the best paper airplanes! Fly your POWERUP modules faster and longer with this certified companion written by designer and illustrator, Kyle Boyer of Foldable Flight.

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Create incredible designs for your POWERUP 2.0 or 4.0 airplane conversion kit and fly in style! This pack of templates includes 10 paper templates to fold 5 unique airplane designs. 2 waterproof templates are also included!

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Two .5" steel balls for force and motion experiments.

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Use this tubular spring scale to easily weigh any object by suspending it from the hook. Capacity is 0-2000 g or 0-20 N. Readability is 50 g or 0.5 N. Accuracy is ± 1%. Can measure both grams and Newtons!

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Metal clamp attaches to a meterstick to make a simple balance.

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An air powered foam ball blaster for experimenting with velocity.

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These replacement carbon discs are designed for use with the AC Spark Recording Timer. 10 per pack.

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Use this friction block with attached hook for force and motion studies.

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Consists of five 1/2"-diameter hooked cylinders.

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Study thermal conductivity by comparing the rates of heat transfer for the following metals: aluminum, carbon steel, copper, brass, and nickel alloy stainless steel.

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This economy ramp for inclined plane studies is 22" long, 5" wide, and constructed of wood.

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This "fire syringe" (or diesel piston demonstrator device) shows the relationship between gas pressure & temperature – and how they can be used to start a miniature fire. Explore thermodynamics, gas laws, Boyle's Law & more!

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Transparent tubular spring scales are easy to use and clearly show how the scale works.

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Individual steel ball that is 1" in diameter.

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Constructed with three low-friction plastic wheels (48mm diameter),a steel housing, and hooks on both ends.

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Transparent tubular spring scales are easy to use and clearly show how the scale works. You can easily weigh any object by suspending it from the hook of the tubular spring scale.

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Everything needed to measure the relationship between centripetal force and mass.

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This set of four mini pulleys allows you to experiment with motorized cars and equipment of your own design.

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This double-tandem pulley is made with low-friction plastic wheels. Ideal for physics experiments or learning about simple machines.

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This 38mm plastic pulley is mounted on a rod.

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See Boyle’s Law in action as you use this syringe apparatus to explore the elastic properties and volume/pressure relationship of air and other gases.

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