The NJ1710 is a raised relief map of Johnson City.
Each USGS topographic map covers 2° longitude..
The NJ179 is a raised relief map of the USGS Roanoke section.
Each USGS topographic map covers 2..
The NK1810 is a raised relief map of the USGS Section of Harrisburg.
Each USGS topographic map c..
The NJ176 is a raised relief map of the USGS Each USGS topographic map covers 2° longitude and 1° la..
PIXIT Plus - 180 pieces with numbers, letters, shapes + bag
WARNING: CHOKING HAZARD - Smal..
PIX-IT Box 6 - for 6 children (6 pcs boards A4 = 3x green and 3x transparent, 1080 pcs colored piece..
(2 pcs boards A4 = 1x green and 1x transparent, 360 pcs colored pieces (180 colored + 180 colo..
Replacement belt for the Van De Graaf machine...
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Build 3D glasses and explore how they facilitate the illusion of depth. Each of the colored lenses f..
Build a device that will allow you to explore Bernoulli's Principle. What will happen to the two bal..
Discover the secret to the wheel's motion with the Koontz™ Boomerang Wheel kit! Did you know that t..
The catapult is a device with a lot of power. Build one and see for yourself how ancient armies used..
Discover how the power of magnetism causes this pendulum to undergo chaotic motion and keep you gues..
Discover the secret to the clock's hand movements with a Koontz™ Clock kit. Did you know in a mecha..
Discover how to crack the code of an ancient puzzle with the Koontz™ Combination Lock kit. Did you ..
Build your own Dynamometer and measure the force exerted by the Earth's gravity on objects around yo..
The Hooey is a stick with a series of notches and a propeller. Rubbing it against another stick acro..
Do you really understand the shape of the towers you have just built? If so, can you get the string ..
Discover how the incredible jet force propels boats, planes, and missiles with the Koontz™ Jet Car ..
Discover a dazzling array of shapes and colors. Close one eye and surrender to the spectacular and c..
Build a Mangonel and experience the launch power of a medieval siege engine! Did you know that a Man..
Build a Mathematical Balance and explore mathematical and algebraic concepts in a tangible and fun w..
See centripetal force in action with the Koontz™ Merry Go Round kit! Anyone can enjoy a merry go ro..
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Superior quality glass lenses are useful for teaching a variety of optical principles. Double convex..
Petri Dishes are essential lab materials used for growing and studying cultures...
General purpose for classroom use, Single Throw, and Single Pole made of brass. Plastic Base 2"L x 1..
This Fossils Collection includes a set of 9 specimens enclosed in a handy, plastic storage container..
Double-sided study cards of fossils with diagram, characteristics and location.
Match It Math is a shouting, racing, adding, subtracting, and matching game that brings real numbers..
Match Learner™ "Match it up! Advanced" is a fun card game for playing with fractions, percentages a..
Match Learner™ "Match it up! Beginner" is a fun card game for playing with addition, subtraction, m..