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Pick Pick, Chip Chip

Rock hammer with one square chipping face and one pointy picking face. Steel head and shank, molded rubber grip. Taiwanese. 1 ft. long x 6" across the head 1-1/2 lbs. Well made. Good buy. Good bye!

88055 ROCK HAMMER
$14.95 EACH

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Glorious Steam Stationary Plants...

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

Build a real head of live steam in the boiler, ease the throttle open and watch the engine take off. The stationary steam plants have nickel plated brass horizontal boiler, water gauge, whistle, safety valve, throttle, 3" dia flywheel and power takeoff pulley. Our dry pellet fuel model (includes 20 fuel pellets) has a single action horizontal piston engine and comes as a kit. It requires about 2 hours to assemble and mount on its roughly 7" sq base, using simple tools like pliers and screwdriver. Assembly adds to the fun and cuts the price! All parts of each are precision metal, plated or enameled as appropriate. Select a small DC motor that will operate as a generator from our catalogs and see if you can become a 19th century electric utility!! Requires light assembly. Ages 10 and up. Add a box of (20) extra fuel pellets for even more hours of enjoyment!

42324 EXTRA FUEL PELLETS
$7.95 EACH
72202 STEAM ENGINE KIT
$129.95 EACH

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Harry Potter’s Science Made Simple

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

Care to sneak a little scientific education in with all the Hogwart’s wizardry? For ages 8 and up, the Simple Physics kit explains some basics with a few props (balls and sticks) and a binder-ready guide to experiments that appear to be spells and magic. The Astronomy kit includes a nice guide to the basics, including a constellation map, plus instructions and real lenses for constructing a simple telescope. All with appropriate Hogwarts insignia.

35931 #8 SIMPLE PHYSICS
$2.75 EACH

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Bridges To Burn

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.

93359 CLASSROOM BRIDGE KIT
$89.95 EACH

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Really Big T-Rex

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

Impressive, this 3-foot Lizard King. The 1:14 scale plastic model of a Tyrannosaurus Rex skeleton has 51 bones that snap together, then snap apart easily for later use, which is more than you can say about the original. Measures 36" long, and comes with a display stand. Bones are nicely aged for paleontological verisimilitude. Very nice kit, with legs, as they say! For ages 8 and up.

93872 T-REX SKELETON
$49.95 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.

on sale 93519 SUNPRINT KIT, LARGE
$13.95 EACH (was $14.95)
on sale 3805 SUNPRINTERS
$5.25 EACH (was $5.95)

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Drill Through Rocks…

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

with this rock- and shell-driller for the budding (or already fully bloomed) crafter or jewelry designer. Call it a semi-toy that really works. Made like a drill press, it's designed to drill holes in small stones or sea shells for stringing on chains or mounting on jewelry. You get the drill, an AC adapter, an ounce of shells, 3 ounces of polished stones, a replacement drill bit, a jar of glue, and an assortment of (20) key-rings, chains, earring wires and rings. Has (2) safety locks and a protective dome to prevent injury, and uses water to lubricate the drill. Can be used by children age 8 and over, with adult supervision.

93689 ROCK DRILL
$44.95 EACH

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Miniature Masonry

Miniature Masonry Snap-together building blocks? Those are for cowards. We spit on those. Tough kids use Mini Bricks, monument kits that come with teensy faux-stone textured plastic blocks (1/4” cubes or 1/4” x 1/4” x 1/2", among others), mortar, a mixing tub and a very, very small trowel. You pick the Coliseum (approx 5” dia) or the Statue of Liberty, both with 132 pieces, instructions, and mounting bases. (You don’t build Lady Liberty. She’s in faux-copper, 3” tall; you build the base.) Suitable for kids with small-motor skills and patience. Neatness counts.

39674 MINI-COLISEUM
$9.95 EACH
39672 MINI-LIBERTY
$9.95 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. You pick from a variety of Pathfinders hydraulic-system teaching kits made up of unfinished wood, transparent tubing, and plastic syringes, which power the movement. The finished mini excavator will stand approx 10” tall on a 7-1/8” x 3-1/4” base, with a 5” x 2-1/4” claw, and (4) syringes. The mini scissors lift has a 9-1/2” x 3-1/2” base and a 3-3/8” x 7” platform and a single syringe. For someone entranced by hydraulics, or for a whole classroom of students, there’s the 4-In-1 kit, with the excavator and scissors lift, plus a cherry picker and platform lifter. Very clever teaching tools for ages 8 and up.

93629 HYDRAULICS 4-IN-1 SET
$34.95 EACH
93628 HYDRO-EXCAVATOR
$14.95 EACH
93627 HYDRO-SCISSOR LIFT
$14.95 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.

on sale 93720 MINERAL KIT
$9.95 EACH (was $11.50)
on sale 93719 MOHS KIT
$9.95 EACH (was $11.50)
on sale 93721 ROCK KIT
$9.95 EACH (was $11.50)

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