These mighty nice little ceramic disc magnets measure 18mm dia x 6.5mm thick, which in America, Burma and Liberia is 23/32" x 1/4", and for those of us still math-impaired, roughly a stack of (5) dimes. They have a 1/4-lb pull. No crafter should be without an enormous supply of these. Also note the physics-class-friendly bulk price.

You choose between our 2" square classroom demonstration slides. The diffraction grating slide has 500 lines per mm resolution and a wavelength chart; the linear polarized filter slide has a 1-3/8” x 15/16” window. Nice for classroom and home-schooling use. Made in the USA.

And find your way back with Map Reading and Land Navigation, a 113-page field manual. Originally published in 1993 by the Department of the Army, this reprint is a light and portable paperback.

Bring back cursive writing with this 40-sheet, bound writing tablet for kiddies, with 1/2” blue rules divided by a dotted line to help place ascenders and descenders. Pages are 10” wide x 8” long, and the inside cover has both cursive and print alphabets in upper and lower case. For grades 2 and 3.

…when you crank up this 13-1/4" tall, hand-cranked Wimshurst generator. They were the toast of the 19th Century, and remained the hottest thing around, electrostatically speaking, until Bobby Van de Graaf came along. This one works like a top, zapping sparks to a fare-thee-well with very little cranking. It's mighty pretty too, in acrylic, white and silver, and will dress up a dull physics or electronics lab.

The human body is a puzzle, really. Get a head-start on anatomy class with one of these anatomically correct breakaway models in authentically colored plastic with detailed cross-sections. Pick the 2" tall, 7-piece eyeball; the 3-1/2" tall, 6-piece human heart; or the 3-3/8" tall, 6-piece rubber and plastic human head/skull/brain. All stand on 3" square bases.

Just a big, smooth ceramic block magnet, 2" square x 1" thick with an affirmative 15-pound pull. You stick a note on the fridge with this puppy and you can be pretty sure its going to be there when you get home. Even if you leave the windows open. Nice for grabbing loose screws on the workbench, too, but keep it away from your hard drive and the credit cards in your wallet.

These (2) reproduction maps are printed on "antiqued vellum" and are both approx 15-3/4" x 14". They show, respectively, the locations of Civil War battles and the principal events in the Revolutionary War, along with chronologies at the bottom. Lots of info packed into a small space, but the kids will read them easily. You might want some glasses. Includes both maps.

You win some, you lose some? No need to keep switching pens when you have this two-headed ball point pen with a black cartridge at one end and a red one at the other. Perfect for those hand-held profit and loss statements.

We like The Usborne Book of Science Activities a whole bunch. It’s volume one of the Helen Edom and Kate Woodward series, a 74-page hardcover that includes experiments with water, magnets, light and mirrors, with plenty of puzzles and projects--profusely illustrated, throughout. Handy for keeping your young one's mind in shape when not in school or as family learning projects.

The kind you hang in the front of the laboratory or on the classroom wall, which is what we suggest you do with this one. Measures 38" x 50" and is laminated to protect it from flying students. Has an aluminum frame and hang tabs on the back side. Brand new! Great quality. Please note: This item is not available for expedited shipping.

Please Note: Your entire order will ship standard ground when purchasing this item. Contact us for expedited shipping information. Thanks! 

You can write on duct tape, but try to change your mind later and see what happens. We recommend these 12-foot x 1-7/8” wide rolls of dark gray chalkboard tape, which you can write on with, you guessed it, chalk; or the 12-foot rolls of the more modern dry-erase tape, which we’ll pick for you in either white or day-glo orange.

That's what you get with this tesla coil!! Brand new, commercial item, great for classroom demonstrations and experiments. The 50,000 volt capacity generator radiates high frequency energy through space... enough to light fluorescent tubes two feet away. It uses 115 VAC (60 Hz) with an electro-magnetically operated interrupter buzzer, high voltage capacitors, inductive coil transformer, and a monopolar high frequency transformer generator to do the trick. 11" high, with a 6" sq. x 2" high protective housing for the generator. Includes accessories and instruction booklet with 19 experiments. Pretty amazing. But please, this is not a toy and should be used only under adult supervision.

An easy way to light up the kids' eyes! Teach them to wire a simple circuit with our basic components.

• The knife switches are mounted on a plastic bases. 
• The miniature plastic socket holds a standard flashlight bulb with a 14 mm dia screw base. 
• We pack 6 volt and 3 volt round bulbs, or 1.5 volt bell-shaped bulbs, (5) to a package.(Bulbs are rated slightly higher to prevent them from burning out.)
• Hook up the black plastic and metal 2" x 4-1/4" telegraph key with brass contacts and (2) terminal posts with nuts. 
• Our blue-plastic holder for (1) "D" battery has a small tab at each end to hook a lead to, and a 1/8" square mounting hole at each corner. 
• You add the mounting surface and the know-how. 
• Actual bulb voltage listed in parenthesis.

It’s a scientific breakthrough! Oh, wait, no, it’s a rare-earth magnet encased in white plastic. Great for holding notes on your white refrigerator without clashing. Measures 1-1/4” x 3/8” x 5/16” and also has a piece of self-adhesive foam on the back to stick where magnets won’t grab.

School is a tiny bit more tolerable when they can sharpen pencils in these. You get a 2" dia baseball and basketball and a 2-1/2" long football that, as a bonus, sits on a tiny kicking tee.

This 10-piece set of 1" cubes is made to test density in the classroom, and by all means you should do that. Otherwise, how will the children ever understand density? But we like to just play with the cubes, to set them on a desk, or stack them, or line them up, or make shapes out of them, or just pick them up and marvel at their weight differences. You get perfect cubes of aluminum, steel, brass, copper, acrylic, oak, nylon, pine, poplar and PVC.

Good advice for us all, and true of this clear, flexible shatter-resistant plastic ruler from Helix®. Measures 12” in 1/16” (and 30cm in 1mm increments).