
Good across the occupational spectrum, from visual artists to physics teachers-this full-service color paddle set comes with red, blue, green, cyan, magenta, and yellow gels; (2) diffraction grating gels-(1) at 13.5 lines/inch, double axis, and (1) 500 lines/mm; (2) polarizing filters; and (1) translucent white diffusing filter with 63% transmission. All gels and filters are 2-1/8" x 2-5/8" in cardboard frames 5-7/8" long, and there's a built-in spectral transmission chart for primary and secondary colors. Made in the USA.
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92683 COLOR PADDLE |
as they go past, with a classic chrome palm counter. 1-3/4" dia x 1-3/16" thick, our mechanical 4-digit counter has a thumb plunger and ring to fit around a finger so you don't drop it, you klutz. The numbers are 3/16" tall, and there's a rotary reset for when you have to start over.
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92897 MECHANICAL COUNTER |
WARNING: CHOKING HAZARD-Small Parts. Not for children under 3 yrs.
Right after you build your own working medieval catapult or trebuchet. All you'll need is glue, scissors and a steady hand (plus a small bag of marbles or rocks or something as a counterweight for the trebuchet) to construct these wooden, Canadian-made siege engine kits. The catapult stands 6" tall x 5" wide x 10" long and will toss assorted stuff 15 feet or farther, depending upon the stuff. The finished trebuchet will be 26" long x 18" wide x 24" tall and will propel small objects (meatballs?) 20 feet or more. Both include detailed instructions. Note: Please don't propel small mammals, and please don't put anyone's eye out.
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92886 MODEL CATAPULT | |
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92887 MODEL TREBUCHET |
WARNING: CHOKING HAZARD-Small Parts. Not for children under 3 yrs.
And teach a kid (8 and up) the basics of solar power. This excellent educational kit from Elenco comes with (9) 0.5VDC solar cells pre-wired in sets of (3) and mounted in a 5" x 4" x 7/16" black-plastic frame with screw terminals on the bottom. The kit includes a 1.5VDC motor with leads and a mount, a fan blade and (4) plastic discs from 5/8" dia to 2" dia for mounting on the motor shaft, a 1.5V incandescent bulb with leads, a sound module with leads, and graphic cards to mount on the discs. Comes with a 14-page instruction/experiment booklet, including info on increasing voltage and amperage, powering battery charges, radios, games, etc. Lots of science project potential. "Heuristic as all get-out," Jarvis said when he saw it.
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92923 SOLAR KIT |
WARNING: CHOKING HAZARD-Small Parts. Not for children under 3 yrs.
KLEE-klik it says when you push the back of this little metal toy with the picture of a cricket on it. Sounds something like a real cricket, and just like the brass versions that U.S. paratroopers carried on D-Day for communicating in the hedgerows around Ste. Mare Eglise. Also just like the one Sister Mary Inviolata used to coordinate precision kneeling/standing exercises during our Confirmation practice, which was only slightly more organized than D-Day. You will get (6) cricket clickers for $2.95.
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93082 CRICKET CLICKER |
Bet your bottom dollar it will. Be ready for it with this nice solar cell made of glass-enclosed copper indium diselenide. Measures 2-3/8" square x 3/32" thick and is rated for 4.5VDC at 50mA. Has (2) 1" long contact strips for output; the negative strip is marked. Made in the USA.
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37731 4.5 VDC SOLAR CELL |
WARNING: CHOKING HAZARD-Small Parts. Not for children under 3 yrs.
Forgive the misspelled title, this is one of the best educational kits that we have! Loaded with magnets, wires and a miscellany of other things (but no battery. 1x"D"!) it has everything needed to perform over 30 experiments, build games and generally have hours and days of educational fun! The thirty page illustrated instruction/explanation booklet is complete for self- instruction. Ages 8 and up will have a ball!
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88776 KIT ELECTRO-MAGNETIX |
"Screeeeeek! Screeeeeek! Screeeeeek!" Recognize that? It's the sound of someone sawing a styro-foamal block. It's followed by the sound of a vacuum sucking up hundreds of little foam shards. Free yourself from both with this clever electric hot-knife that slides through those chunks of craft foam like a straight razor through a ripe mango. Perfect for carving foam blocks into shapes - or smaller blocks. Measures 10" long OA with a 4-3/4" long, needle-like cutting wand, heats up to 410°F (so be careful), and makes screeeek-free and shardless cuts. Has a 7-foot cord, line switch, safety stand, and wall-outlet adapter.
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93201 HOT WIRE STYROFOAM CUTTER |
But science teachers can't work without them. Experiment with this good-quality manual vacuum pump made of durable polychloroethylene plastic. Works with a pistol-grip action and pulls up to 2" Hg. Includes a 17" length of clear vinyl, 1/4" ID tubing, and a release valve.
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93305 VACUUM HOME PUMP |
Perfect for hands-on hobbyists. Foot-pedal speed controls free up your paws to do the real work. This one's for 120VAC devices, and ideal for machines using approx 200W or less. Measures 5" x 3" x 2-1/4" tall, with a 6-foot cord that plugs into the wall and a grounded female plug for your sewing machine, rotary tool, scroll saw, or, if you really make a lot of banana Daiquiris, blender.
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93239 FOOT PEDAL |
Or break, actually, as an heuristic exercise. Here's a classroom-full of bridge-building supplies based on the Illinois Institute of Technology's national bridge-building contest. Each kit contains enough balsa wood pieces and glue to supply (24) budding engineers or physics students with what it takes to test their skills at wooden bridge construction. Includes a 12pp teacher's guide with info about (6) bridge styles and (8) types of trusses, (24) rules/instruction sheets for students, (360) pieces of 1/8" square x 24" long wood, and (24) bottles of white glue. Among the most engaging and popular classroom projects in the country, it's designed for grades 7-12.
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93359 CLASSROOM BRIDGE KIT |
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