Why does it do that? Develop an elemental understanding of magnetism, electromagnetism, electrochemistry, radio, thermodynamics, light and optics. Simon Quellen Field's 228-page paperback, Gonzo Gizmos, Projects & Devices to Channel your Inner Geek explains processes, equipment and scientific terms -- and then, for starters, tells you things like how to make a rotary steam engine in 15 minutes from a soda can, a candle and a few scraps of rubber tubing. It's the favorite of our resident geeks -- but not for kids unless they're working with an adult. That would be a mature adult. An insured, mature adult.

But cheap. Just the thing for anyone interested in life off our home planet. You pick from our 5” x 3-1/2” (passport size) 50-page notebooks. The Moon Passport has blank, ruled pages with a small moon phase in the corners plus a bonus fold-out lunar map and chart; and the Mars Passport has blank pages with 3/16” square grids and some fun Martian facts on the inside back cover. And no, sadly, they are not yet approved for actual space travel.

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.

"WE DARE YOU!" by Vicki Cobb is a 322-page book for children, filled with over (300) scientific challenges and experiments that can be done with ordinary household stuff. A savvy adult could introduce kids to science by betting them their allowance money on the afore-mentioned challenges, including making square eggs without using a square chicken, writing with potatoes, blowing frozen soap bubbles, and a whole bunch more.

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.

Yes, this grade C8 ceramic magnet is beastly--a monster, measuring 6" X 4" X 1" thick with a conservatively rated pull of 35 lbs, 3850 gauss. Powerful and, like all ceramic magnets, brittle, so keep it away from your laptop and don’t drop it or you may have several little beastly magnets. Use it to hold tools in the shop, or knives in the kitchen--or paint a bull’s eye on it and toss paper clips at it.

Same here. Try the Ferrofluid Magnetic Display, a little sealed bottle with virtually fluid nano-particles of ferrous metal suspended in liquid. You’ll get (4) powerful 1/2” dia x 3/16” neodymium disc magnets, (2) of them attached to chess-pawnish holders. Move the magnets in assorted combinations around the bottle for fascinating effects. Sort of the marriage of science with desk toys, but students can’t spill these particles all over the place.

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.

…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.

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.

You'll never lose your chance to highlight something when you hang your highlighter around your neck. These have a 3/16" wedge tip (every true highlighter's choice), and come with a pocket clip and a detachable 18" lanyard. You pick yellow or pink.

Sounds like a Portuguese percussion album, but it’s just an alnico bar magnet in a mount that lets it rotate freely to demonstrate the three-dimensional magnetic field. Ideal for experiments about forces between magnetic poles, fields around wire and coils, and the properties of fields produced by electric currents. Also handy as part of your ghost-hunting gear.

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.

Or are you just under heavy pressure to start writing right now! We know, we know. That’s why our copywriters always buy these pre-sharpened #2 pencils, to get those terrible jokes down on paper ASAP. And yes, they have erasers because sometimes we’re not funny, and we all make mistakes. In packs of (12) at 7-3/8” long.

Nice little teaching magnet set for the primary grade classroom has (6) magnets in star, two-bar, horseshoe and ring shapes, all plastic coated in silver and red to mark the poles. Range in size from 1” to 3”, and include a few paper clips and small nails for demo purposes.

Our tactical twofer is a 6” long x 1/2” dia. aluminum body ball-point pen with black ink, with an automobile window breaker at the other end. In gun-metal gray, as befits things tactical, with a pocket clip on the flat-top cap. Escape from your car, then write us a thank you note.

The Woodworker’s Shop Journal is a hardcover book with (100+) pages of 1/4" grids for project planning and sketches, plus (20+) pages of quick references, charts, lumber specs, tool guides, checklists and tips. Also a good place to keep passwords and other personal information because burglars are famous for not caring about carpentry skills.

This is your chance to own a genuine cow magnet. Fed to cows by vets and farmers to attract the odd metallic parts of cows' diets (they tend to scarf up nails, staples and other stuff with the grass) and prevent bovine traumatic reticuloperitonitis, also known as hardware disease. Used for lots of magnetic lab experiments because they're so handy. In plated alnico, 3" long x 1/2" dia in a rounded tubular shape. Approx a 5-lb pull.