
A pair of shades in assorted colors with the outer portion of each lens half silvered on the eyeball side. Glance left or right and see behind you. Cool undercover item for the younger sleuth or the dirty old man on the beach who doesn't want to be discovered. Whatever your motive, you need a pair now.
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90338 REARVIEW GLASSES |
WARNING: CHOKING HAZARD-Small Parts. Not for children under 3 yrs.
A trio of the best science education kits we have seen dealing with electricity, magnetism, motors and generators. The 44 page instruction booklets are educational and complete; state problem, approach and explain what is happening for a series of projects of graded difficulty. The Motor/Generator kit includes several introductory experiments on magnetism as well as six complete motor generator projects. The Electromagnet kit provides experiments including the building of an electromagnet, a doorbell chime, a telegraph, a relay and an electric catapult. The Levitation Set experiments with magnetic fields, gravity, and equilibrium; plus everything you need to build a magnetic levitation train! All are complete except for batteries. Strongly recommended for their quality, the accuracy of their science and the interest they will sustain. Ages 10-18.
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89339 ELECTROMAGNET KIT | |
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89714 MAGNET LEVITATION KIT | |
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89338 MOTOR/GENERATOR KIT |
Chemically treated paper strips to test for acid or base (alkaline) solutions. Use the blue for acids, the red for bases. The more sophisticated pH test paper strip indicates pH from 1 (bright red) to 14 (dark brown). Values in between can be read by comparing with a color chart that comes with the strips. All have (100) strips of test paper per vial.
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88217 BLUE LITMUS PAPER | |
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88219 HYDRION PH PAPER | |
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88218 RED LITMUS PAPER |
See psychedelic patterns the safe way! Press your hand on this 6" x 6" sheet of liquid crystal and leave a print of swirling colors that, like the mood ring of yore, you can use as a sign of your mood. The pattern will blend and fade in seconds as the crystals react to temperature. Tiny liquid crystals inside the film-like material react to heat by changing colors. As science, it demonstrates the way liquid crystal displays work. And you can cut it into pieces to incorporate into a science project. Or just leave it out for guests to play with when the party turns boring.
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91582 LIQUID CRYSTAL SHEET |
There are temporary tattoos all over the place, but how many of them glow in the dark? Our (6) packs, that's how many. Each pack holds a 5" x 5-1/2" sheet full of tattoos, most 1/2" to 2" across. The spirals and tai chi designs are black and white, the rest are in full color.
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33552 PEACE/LETTERS TATTOOS |
WARNING: CHOKING HAZARD-Small Parts. Not for children under 3 yrs.
This is Philip’s new favorite toy, since he blasted a rocket so high over our parking lot that he lost sight of it (the rocket, not the parking lot). The Air Burst™ Rocket system has a 26” tall, air–powered tri–pod launcher made of plastic and rigid foam. A 65” long air hose connects it to any stand–up bike pump. After a few pumps, the air pressure bursts a replaceable booster disc in the launcher and sends a 10” x 3/4” dia rocket 250 to 1000 feet into the air. Wow! The system includes the launcher, (2) rockets, and (60) boosters (two different weights). Sending rockets out of sight, even if they usually come straight back down, is an ingenuous ploy for selling extra rockets. Our each is a pack of (2). And having extra rockets is an ingenuous ploy for selling extra booster discs. Our each is another bag of (60). Warning: The Air Burst™ Rocket is for ages 10 and up, with adult supervision. Don’t let us catch you out there without a kid!
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92025 AIR BURST ROCKET SYSTEM | |
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92027 EXTRA BOOSTER DISCS | |
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92026 EXTRA ROCKETS |
WARNING: CHOKING HAZARD-Small Parts. Not for children under 3 yrs.
This sinister device seems at first glance to be an innocent ping-pong ball. Touch both of the metal strips on the weighted bottom, however, and a circuit closes, making the ball flash red and moan eerie electronic sounds. Can be used to illustrate the idea of an electric circuit to children-show how electricity can flow through a chain of people holding hands, or that a little dampness can improve conductivity, et cetera. Powered with two watch batteries (included) so there is no danger of shock.
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89911 ENERGY BALL |
If you're a science teacher, an amateur scientist, or a professional who likes to take his work home with him, you'll lust after this CD-ROM. The updated (v3.0) and expanded disk contains the "legacy of a century," the complete collection of The Amateur Scientist columns from Scientific American magazine, featuring Albert G. Ingalls, C.L. Strong, Jearl Walker, Forrest Mims, Shawn Carlson and others. It includes over 1,000 classic projects in various disciplines for hobbyists, students and science fair contestants, more than 1,000 pages of helpful techniques that never appeared in the magazine, plus Internet links to valuable scientific sites. Minimum requirements: Mac OS, Windows, Linux or UNIX. 64MB RAM minimum. Runs with any browser. An incredible resource. An Absolutely-Must-Have!
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92047 AMATEUR SCIENTIST CD 3.0 |
$29.95
EACH
Out of Stock. Check Back Soon! |
You say you’re a kick-butt, edgy nonconformist thumbing your nose at middle-class hypocrisy, but you’ve got a job interview on Tuesday? Try our “my mother won’t let me be a goth” selection of temporary tattoos to dress up your weekend. You’ll get a pack of (12) semi-goth-ish scrolls, green circles, a cross, and medallions for adorning your visage.
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37726 SEMI-GOTH TATTS |
Think of it as a shortcut to learning perspective. This clever 50-sheet pad of white, 7" x 4-1/2" paper has a fine red and blue grid pattern that shows your drawing and doodling in 3-D when you wear the included 3-D glasses. It's our candidate for the why-didn't-I-think-of-that award this year.
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93371 3-D PAD |
Sunprints (or cyanotypes, or photograms) are everyone's favorite photo-sensitivity experiment, from third-graders to graphic artists and fine artists. You pick: The Sunprinters are a dozen 3-15/16" square sheets of photosensitive paper, an acrylic backing sheet and instructions. The large Sunprint Kit has (15) sheets of 12" x 7-3/4" photosensitive paper plus a clear acrylic sheet of the same size. Great for classroom demonstrations, and can be used to make prints from photo negatives as well as interesting effects from opaque or translucent objects. All you add is sunshine and water.
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93519 SUNPRINT KIT, LARGE | |
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3805 SUNPRINTERS |
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