Little-bitty horseshoe magnet, for traditionalists. Just 1-1/4" across x 1" x 5/16" thick. Red-painted Alnico, with approx 2.9 lbs of pull (ignore the 2 lb on the label) it includes a little steel keeper for when it's not sticking to a tiny horse's foot.

So the poster is really brand new. The animals on it are (1) to (190) million years old, and if that doesn't qualify as pre-history, may we stumble over a glyptodon in the dark. Invicta Plastics Ltd. of Leicester, England, printed this 23" x 16-1/2" poster with a colorful diorama to promote their authentic scale models of prehistoric animals. A time line across the bottom lists dates and data for a dozen of them, from the plesiosaur to the woolly mammoth, and compares their sizes to that of a pair of five-year-old children. Post it on the fridge to spark supper discussions, or in the classroom as a source of extra-credit questions for science quizzes.

White chalk is fine but imagine the possibilities of a full palette of colors. Looks nice, right? Our box is (16) pieces of washable chalk at 3-1/8” long x 3/8” dia, and you’ll get (3) boxes, each with (2) pieces of green, purple, yellow, pink, hotter pink, blue, orange and white, which is a color too.

Nothing says fun science like stuff blowing up or falling down. Ask any middle-schooler. Get them started with one of these excellent books: Massively Epic Engineering Disasters, a 241-page hard-cover book devoted to (20) mishaps through the ages, plus (33) experiments based on the principles that caused them; or Potentially Catastrophic Science, 306 pages with (50) experiments ranging from pre-history to the present. Taken together, they cover everything from collapsing cathedrals and sunken boats to sonic booms and batteries.

Ceramic magnets, 15/16" dia x 3/16" thick. One side has a 5/16" sq that goes through to a steel plate is octagonal, 9/16" across with a 3/16" dia hole in the center. The plate allows flexible mounting of the 3/4 lb lift magnet. The other interesting feature is that the ceramic appears to have many poles around the rim, (4 ea N and S). This may be a focussing effect of the insert, though.

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.

When we were your age, our protractors were all just plain clear plastic. You kids today can get them in translucent blue, red, orange, purple or green, but we're going to pick because we didn't get to then. These pretty ones are 6" wide and read from 0-6" x 1/16" on the bottom and from 0-180 degrees x 0.5-degrees bidirectionally along the arc. Include holes for a 3-ring binder.

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.

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.

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! 

Is that a pencil in your pocket, and wouldn't you like a little stubby highlighter that didn't take up so much room? Our each is (2) neon-yellow markers with 1/8" tips in soft-grip housings just 2-5/8" long x 1" oval, with a little slot on the cap for a chain if you want to wear them on a string or attach them to a key ring. And why wouldn't you?

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.

Some kids, you send them to school, they eat the books. Now they’ll still learn something with this 160-page paperback, Amazing (Mostly) Edible Science, by Andrew Schloss. Kids learn the science behind gelatin, crystals, baked goods, fruits, vegetables, eggs and carbonated drinks, and then get to eat their work. Call it kitchen scientific.

…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.

You can start with our single aluminum tuning fork, 2-tined and 7-1/2" long. It vibrates at 256 hz, and is labeled "C". Or you can order the set that has (8) forks and a mallet with a rubber-tipped plastic head. The forks are labeled low-C to high-C and come in a fitted, latched wooden box. Unfortunately, C.J., who has perfect pitch, tells us that his pitch is more perfect than most of the tuning forks. He also says you can file the tips, tuning them to an electronic keyboard until they're perfect - and we think there's a certain cachet to telling people you tuned the forks yourself. But they are perfect, if you're using them for things like teaching principles of sound or driving the chihuahua crazy.

Begin their microscopic education here, with this 40-640X student microscope from Levenhuk®. Featuring an adjustable eyepiece, variable white LED illuminator, and adjustable iris. Comes with a cover; (5) blank and (5) prepared slides; pipette; brine shrimp, yeast, sea salt and glue samples; forceps; a microtome; 58-page user guide; and a 23-page manual. Includes (2) “AA” batteries and a lifetime warranty through the manufacturer.

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).

This 96pp, full-color, heavily illustrated book, "The Usborne Internet-Linked Book of Astronomy & Space," is written with a quick-link to the publisher's website, where there are updated links to internet sites that correspond to specific pages of the text. Sections include the solar system, stars, constellations, telescopes, photography and a plethora of astronomical facts and lists. From Usborne Publishing.