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The 3D Glasses

The 3D Glasses

Build 3D glasses and explore how they facilitate the illusion of depth. Each of the colored lenses f..

$26.99 $35.99

The Bernoulli Principle

The Bernoulli Principle

Build a device that will allow you to explore Bernoulli's Principle. What will happen to the two bal..

$29.99 $51.49

The Boomerang Wheel

The Boomerang Wheel

Discover the secret to the wheel's motion with the Koontz™ Boomerang Wheel kit! Did you know that t..

$6.99 $8.99

The Catapult

The Catapult

The catapult is a device with a lot of power. Build one and see for yourself how ancient armies used..

$5.49 $9.99

The Chaotic Pendulum

The Chaotic Pendulum

Discover how the power of magnetism causes this pendulum to undergo chaotic motion and keep you gues..

$5.49 $9.99

The Clock

The Clock

Discover the secret to the clock's hand movements with a Koontz™ Clock kit. Did you know in a mecha..

$7.99 $9.99

The Combination Lock

The Combination Lock

Discover how to crack the code of an ancient puzzle with the Koontz™ Combination Lock kit. Did you ..

$6.99 $8.99

The Dynamometer

The Dynamometer

Build your own Dynamometer and measure the force exerted by the Earth's gravity on objects around yo..

$9.99 $17.99

The Hooey Stick

The Hooey Stick

The Hooey is a stick with a series of notches and a propeller. Rubbing it against another stick acro..

$9.99 $11.99

The Induction Rings

The Induction Rings

Do you really understand the shape of the towers you have just built? If so, can you get the string ..

$29.99 $44.99

The Jet Car

The Jet Car

Discover how the incredible jet force propels boats, planes, and missiles with the Koontz™ Jet Car ..

$5.49 $9.99

The Kaleidoscope

The Kaleidoscope

Discover a dazzling array of shapes and colors. Close one eye and surrender to the spectacular and c..

$7.99 $9.99

The Mangonel

The Mangonel

Build a Mangonel and experience the launch power of a medieval siege engine! Did you know that a Man..

$6.99 $8.99

The Mathematical Balance

The Mathematical Balance

Build a Mathematical Balance and explore mathematical and algebraic concepts in a tangible and fun w..

$29.99 $39.99

The Merry Go Round

The Merry Go Round

See centripetal force in action with the Koontz™ Merry Go Round kit! Anyone can enjoy a merry go ro..

$7.99 $8.99

The Periscope

The Periscope

Discover how to see without being seen with the Koontz™ Periscope kit! Did you know periscopes are ..

$5.49 $9.99

The Pisa Tower

The Pisa Tower

How is it that the Leaning Tower of Pisa does not topple over? Build a model and learn about center ..

$34.99 $44.99

The Safe

The Safe

Discover the inner workings of a combination lock used in safes with the Koontz™ Safe Kit! Did you ..

$5.49 $9.99

The Spinning Button

The Spinning Button

Can you make the colors of the button disappear? Simply roll the rope and release it by repeatedly p..

$9.99 $17.99

The Sundial

The Sundial

Have you ever wondered how we would tell time if we didn't have modern day clocks? Build a sundial a..

$6.49 $9.99

The Teetering Penquin

The Teetering Penquin

Koontz™ innovative products are designed to excite children and delight parents. Products are made f..

$7.99 $9.99

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