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Beauty Of A Stirling Engine

Use this little stainless beauty to teach teenagers and older students how heat engines work Then keep it on your desk, where you deserve to have it! This low-temperature-differential Stirling engine is beautifully machined. It works with hot water, ice water, a combination of hot water with ice cubes, or a hair dryer. It measures 5-3/4" tall with a 3-5/8" dia flywheel and a 3-1/2" dia x 7/8" tall base. The speed with hot water is approx 150 rpm. This is a real showpiece, the best we've ever seen at this price. Includes a 7-page instruction booklet.

94353 LOW TEMPERATURE STIRLING ENGINE
$89.95 EACH

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Small Faces

Get ready for a little Greek, Kabuki, or your very own theatricality with our ready-to-paint, white plastic face mask. At 6-1/2" long x 5-1/2" wide, it's smallish and feminine (it has Julie Andrew's nose). You add your own artwork/makeup with an included brush and (6) paint pots: red, yellow, blue, green and (2) more GITD paints. Clever crafter-artistes will realize that with a little trimming, the molded clear plastic forms packed under and on top of the mask will make another pair of spookily paintable faces.

93582 BLANK MASK
$5.50 EACH
 

Meet Metallicus

Warning!  WARNING: CHOKING HAZARD-Small Parts. Not for children under 3 yrs.

Presenting the little metal-detecting robot that you build from a Kidz Labs® kit. We've named him Metallicus. You push a button and he rolls around, beeping when he passes over buried treasure. When he gets tired, just remove the small hand-held metal detector and go detecting on your own. Assembled, Metallicus measures 3-3/4" tall x 5-3/8" long x 3-1/8" wide with a small DC motor/gear drive and a hard-wired remote with a forward/reverse switch. Comes with (3) button cell batteries for the detector, but you add a single "AA" for the bot. For kids over 8.

94191 KIDZ LABS® ROBOT METAL DETECTOR KIT
$19.95 EACH

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Multiple Minerals

Warning!  WARNING: CHOKING HAZARD-Small Parts. Not for children under 3 yrs.

We've got rocks by the box. You pays yer money and you takes yer choice of our gallimaufry of geological goodies. The Mohs Kit is a mineral hardness scale set, with (9) specimens: gypsum, talc, calcite, fluorite, apatite, orthoclase, quartz, topaz and corundum. The Mineral Kit has (15) specimens: fluorite, microline, feldspar, hematite, pyrite, calcite, magnetite, talc, pyrolusite, graphite, milky quartz, mica, satin spar, selenite and alabaster gypsum. The Rock Kit has (15) specimens, (5) each of igneous, sedimentary, metamorphic rock types. All kits include a small magnifier, tray and instruction pamphlet. The Mohs and Mineral Kits also come with a nail and ceramic streak plate.

93720 MINERAL KIT
$11.50 EACH
93719 MOHS KIT
$11.50 EACH
93721 ROCK KIT
$11.50 EACH

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Motor Along

Warning!  WARNING: CHOKING HAZARD-Small Parts. Not for children under 3 yrs.

Everything you need to build a little DC motor is included in this kit (except sandpaper, screwdriver, scissors and, of course, an AA battery). The instructions are simple and explain the theory as well as assembly. Fun and educational.

91508 TOY MOTOR KIT
$7.50 EACH

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Chemistry Lab In A Box

Warning!  WARNING: CHOKING HAZARD-Small Parts. Not for children under 3 yrs.

This is the new, improved, bigger and better CHEM C1000 beginner chemistry set from Thames & Kosmos. Follow Professor Probenius, the world's most distinguished cartoon chemistry professor, through the 80-page manual while he provides safety advice and instructions for carrying out 125 diverse experiments. Build a fire extinguisher, make water flow uphill, identify chemicals, split water into hydrogen and oxygen and much more. Includes the simple lab equipment and supplies you need to experiment with air pressure, surface tension, acids and bases, indicators, electrochemical reactions and chromatography. You add some common household materials. A superior kit for ages 10 and up. Winner of the Gold Award® from Parents' Choice.

94374 BASIC CHEMISTRY SET
$59.95 EACH

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Drop The Egg & Nobody Gets Hurt

Warning!  WARNING: CHOKING HAZARD-Small Parts. Not for children under 3 yrs.

Physics meets Chinese soup? No, Professor Ein-O's 4-way Egg-Drop Science kit meets science fair project! Teaches kids shock-absorbing lessons about a parachute drop, balloon armor, a straw shell and a spine shield all with raw eggs. Includes everything you need except a little tape, some cotton or bubble wrap, and a few good eggs to be the subjects of the experiments. Comes in a plastic case with instructions.

94303 PROFESSOR EIN-O'S EGG DROP EXPERIMENTS
$13.95 EACH

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Hydraulics Made Easy

Warning!  WARNING: CHOKING HAZARD-Small Parts. Not for children under 3 yrs.

Cleverly made, and mighty heuristic, too. For someone entranced by hydraulics, or for a whole classroom of students, there’s the Pathfinders 4-In-1 kit, with the excavator, scissors lift, a cherry picker and the platform lifter. Fun and educational kits made up of unfinished wood, transparent tubing, and plastic syringes, which power the movement. As you might expect they range in size, but the bases are all approx. 3-1/2" x 8". Very clever teaching tools for ages 8 and up.

93629 HYDRAULICS 4-IN-1 SET
$34.95 EACH

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Three-Way All-Terrain Robot

Warning!  WARNING: CHOKING HAZARD-Small Parts. Not for children under 3 yrs.

Just like those things that snap trees in half and load the trucks in your favorite swamp logger TV shows. The 3-in-1 ATR (All-Terrain Robot) operates on a wired remote and its (6) tracks can be configured to make a forklift, rover or (scissors-ish) gripper. Measures approx 7-3/8" to 9-5/8" long x 6-1/4" to 8-1/2" wide x 3-3/4" to 5-3/4" tall, depending on how you configure it. You build it with a small screwdriver and wire cutter, then (4) "AA" batteries. Includes profusely illustrated instructions and yes, it's yellow and black the way the construction gods intended. Ages 13 and up.

94365 3-IN-1 ALL TERRAIN ROBOT WITH WIRED REMOTE
$44.95 EACH

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Magic Rocks

Geology for those with short attention spans? The original Magic Rocks®, of course! Mix the solution in a jar of water, drop in the pebbles, and watch them grow into a forest of multi-color stalagmites. Growth starts in 10 minutes, is impressive in 30 minutes, and complete (up to 4" tall) in 2 hours. Extra credit if you can make it grow stalactites by gluing the pebbles to the bottom of a jar, then pouring the solution in and turning it upside down. Who knows? Maybe it will work. Comes with a set of marine decals to decorate the jar. Definitely not for use with living fish. For ages 10 and up.

6207 MAGIC ROCK SET
$8.95 EACH

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Sunprint® Kit

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.

93519 SUNPRINT KIT, LARGE
$14.95 EACH
3805 SUNPRINTERS
$5.95 EACH

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