BEST SELLERS

Rocks and Roll

Turn rocks into jewelry, a few pieces at a time. Our small Rock Tumbler Geology Kit (1lb capacity) plugs into the wall and rolls those rocks around until they're all shiny and beautiful. Includes coarse and fine grinding powders, fine and finer polishing powders, 4 oz of practice gemstone rocks, a geology poster, glue, and mounting hardware to make a keychain, adjustable rings, earrings and other items. Can be set to turn from (1) to (7) days (rocks are hard, which is why they're called rocks). Measures approx 9" x 11" x 6" high overall, including the plastic dome to reduce the sound of the operation. For 10-year-olds and up.

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HOBBYIST ROCK TUMBLER

Rocks and Roll

Turn rocks into jewelry, a few pieces at a time. Our small Rock Tumbler Geology Kit (1lb capacity) plugs into the wall and rolls those rocks around until they're all shiny and beautiful. Includes coarse and fine grinding powders, fine and finer polishing powders, 4 oz of practice gemstone rocks, a geology poster, glue, and mounting hardware to make a keychain, adjustable rings, earrings and other items. Can be set to turn from (1) to (7) days (rocks are hard, which is why they're called rocks). Measures approx 9" x 11" x 6" high overall, including the plastic dome to reduce the sound of the operation. For 10-year-olds and up.

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$36.50 EACH

How Does It Work?

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.

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GONZO GIZMOS BOOK

How Does It Work?

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.

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$16.95 EACH

Catch Some Rays

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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SOLAR SCIENCE EXPERIMENT KIT

Catch Some Rays

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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$19.95 EACH

See Me, Feel Me...

Play The Who while you’re building this collection of all (5) sensory organs. You’ll get the parts to make free-standing Lindberg models of a nose, eye, ear, tongue and patch of skin to illustrate the senses of smell, sight, taste, hearing and touch. Models measure 9” x 5” x 6” to 7” when complete. You add paint and glue. For ages 10+.

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SET OF 5 LINDBERG SENSORY ORGAN MODELS

See Me, Feel Me...

Play The Who while you’re building this collection of all (5) sensory organs. You’ll get the parts to make free-standing Lindberg models of a nose, eye, ear, tongue and patch of skin to illustrate the senses of smell, sight, taste, hearing and touch. Models measure 9” x 5” x 6” to 7” when complete. You add paint and glue. For ages 10+.

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$17.50 EACH

Paleontology Made Simple

Why go dig up half of Utah when you can just line these little 6” long dinosaur skeletons up on your dresser? You’ll get (3) different ones from our collection of dilophosaurus, parasaurolophus, T-Rex, pentaceratops, triceratops, pterodactyl, stegosaurus, brachiosaurus and ankylosaurus.

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ASSORTED 6” DINOSAUR SKELETONS

Paleontology Made Simple

Why go dig up half of Utah when you can just line these little 6” long dinosaur skeletons up on your dresser? You’ll get (3) different ones from our collection of dilophosaurus, parasaurolophus, T-Rex, pentaceratops, triceratops, pterodactyl, stegosaurus, brachiosaurus and ankylosaurus.

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$4.50 PKG (3)

Kids’ Kits

From Creativity for Kids®, these DIY kits call for assembly and decoration, and have everything you need, including glue, paint and brushes. You pick: the Bitty Bobble Duo is a pair of 3” tall bobbleheads, a kitty and puppy, for kids age 6+; the wooden Pirate Ship has a Jolly Roger sail and will be about 6-1/2” long when done, for ages 5+; the Shrinky Fairies are a trio of 4-1/2” tall fairies with a birds and flowers backdrop, and is for ages 7+ with adult supervision for the shrinky baking.

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WOODEN PIRATE SHIP KIT

Kids’ Kits

From Creativity for Kids®, these DIY kits call for assembly and decoration, and have everything you need, including glue, paint and brushes. You pick: the Bitty Bobble Duo is a pair of 3” tall bobbleheads, a kitty and puppy, for kids age 6+; the wooden Pirate Ship has a Jolly Roger sail and will be about 6-1/2” long when done, for ages 5+; the Shrinky Fairies are a trio of 4-1/2” tall fairies with a birds and flowers backdrop, and is for ages 7+ with adult supervision for the shrinky baking.

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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.

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LOW TEMPERATURE STIRLING ENGINE

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.

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$89.95 EACH

Your Grandfather's Paddlewheeler

It's kinda pretty, and pretty simple, this old-fashioned rubber band-powered boat. Wind the paddle, watch it ride the waves, or bathtub. Measures 5-3/4" x 2-1/2"x 11/16" in varnished pine and even comes with spare rubber bands.

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RUBBER BAND PADDLE BOAT

Your Grandfather's Paddlewheeler

It's kinda pretty, and pretty simple, this old-fashioned rubber band-powered boat. Wind the paddle, watch it ride the waves, or bathtub. Measures 5-3/4" x 2-1/2"x 11/16" in varnished pine and even comes with spare rubber bands.

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$4.95 EACH

The Original Air B&B

One story, one entrance. Small perch-porch. Our pine birdhouse kit comes with glue, paint (red, yellow, blue and white), and a chain to hang it with. Just under 5” tall when finished with a 1-1/8” ID front door. Only approx 2/3 of a square foot of living space, but birds like cozy.

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BIRDHOUSE KIT

The Original Air B&B

One story, one entrance. Small perch-porch. Our pine birdhouse kit comes with glue, paint (red, yellow, blue and white), and a chain to hang it with. Just under 5” tall when finished with a 1-1/8” ID front door. Only approx 2/3 of a square foot of living space, but birds like cozy.

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$11.95 EACH

Working Wooden Models

One--they’re made of laser-cut, press-fit wood so you don’t need tools or glue. Two--their working pistons and gears are so intricate and precise you might be surprised they’re just wood. Three--you’re tired of models that just sit there looking pretty. You pick: Pneumatic Engine or Mechanical Timer. Engine kit is (81) pieces at 1:87 scale. Add a simple balloon to operate its pistons. Finished model will measure approx 6-1/4” x 3” x 4” tall. Timer kit is (107) pieces and will be 6-7/8” x 3-3/16” x 10-1/16” tall, and run for (20) minutes on rubber bands. Moving gears are completely visible. Both kits made in Ukraine.

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WOODEN TIMER MODEL

Working Wooden Models

One--they’re made of laser-cut, press-fit wood so you don’t need tools or glue. Two--their working pistons and gears are so intricate and precise you might be surprised they’re just wood. Three--you’re tired of models that just sit there looking pretty. You pick: Pneumatic Engine or Mechanical Timer. Engine kit is (81) pieces at 1:87 scale. Add a simple balloon to operate its pistons. Finished model will measure approx 6-1/4” x 3” x 4” tall. Timer kit is (107) pieces and will be 6-7/8” x 3-3/16” x 10-1/16” tall, and run for (20) minutes on rubber bands. Moving gears are completely visible. Both kits made in Ukraine.

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Micro Models

Could be lilliputian versions of Heidi Klum and Naomi Campbell, but they’re not. They’re dandy little 37-piece (mostly) steel model kits of two different racers, a biplane or a helicopter, from Steel Works. Finished models will be a couple of inches long, and a tiny tool for assembly is included. We’ll pick one that will be just right for you. Ages 8+.

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MICRO MODEL VEHICLE KITS

Micro Models

Could be lilliputian versions of Heidi Klum and Naomi Campbell, but they’re not. They’re dandy little 37-piece (mostly) steel model kits of two different racers, a biplane or a helicopter, from Steel Works. Finished models will be a couple of inches long, and a tiny tool for assembly is included. We’ll pick one that will be just right for you. Ages 8+.

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$4.95 EACH

Are You Logical? Don’t Lie!

Electronic fun with just a hint of soldering from Madlab. You pick: the lie detector kit, with a PC board and components, or the LED logic game with diodes and transistors that pit your skill against moving a peg along (36) pads. You should be able to assemble either kit in under an hour with a little light soldering. You add a 9V battery to both. Soldering iron not included. But we have one, and it’s item #88242 for $6.95.

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KIT, TOY LIE DETECTOR, REQ. 9V, SOLDERING REQ.

Are You Logical? Don’t Lie!

Electronic fun with just a hint of soldering from Madlab. You pick: the lie detector kit, with a PC board and components, or the LED logic game with diodes and transistors that pit your skill against moving a peg along (36) pads. You should be able to assemble either kit in under an hour with a little light soldering. You add a 9V battery to both. Soldering iron not included. But we have one, and it’s item #88242 for $6.95.

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Leo Vinci Kits

Return with us now to those thrilling days of the 15th century, when Leonardo was designing stuff you wouldn't have thought of even if you'd paid attention in class and applied yourself. You choose from these wooden models of his genius designs. His unrealized aerial screw (think helicopter) stands approx 15" tall on a 9" square base and has a canvas canopy. Includes a 12-page manual and all the parts. For ages 9+. You’ll need glue, scissors and a ruler. The trebuchet (think catapult) is based on his original 1482 design, stands approx 24" tall x 12-3/4" x 4-1/2" and comes with all the parts, including a clay ball to launch at your favorite model castle, or your sister. Includes an 8-page instruction book and is for ages 12+. Bring glue, scissors, a ruler and some small clamps. His wooden armored tank, for ages 8+, will be about 8” across and 6-5/8” tall when you glue the (87) pieces together. Great resources for STEM activities.

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DAVINCI TREBUCHET KIT

Leo Vinci Kits

Return with us now to those thrilling days of the 15th century, when Leonardo was designing stuff you wouldn't have thought of even if you'd paid attention in class and applied yourself. You choose from these wooden models of his genius designs. His unrealized aerial screw (think helicopter) stands approx 15" tall on a 9" square base and has a canvas canopy. Includes a 12-page manual and all the parts. For ages 9+. You’ll need glue, scissors and a ruler. The trebuchet (think catapult) is based on his original 1482 design, stands approx 24" tall x 12-3/4" x 4-1/2" and comes with all the parts, including a clay ball to launch at your favorite model castle, or your sister. Includes an 8-page instruction book and is for ages 12+. Bring glue, scissors, a ruler and some small clamps. His wooden armored tank, for ages 8+, will be about 8” across and 6-5/8” tall when you glue the (87) pieces together. Great resources for STEM activities.

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Falling Down & Blowing Up!

Nothing says fun science like stuff blowing up or falling down. Ask any middle-schooler. Get them started with one of these excellent books: Massively Epic Engineering Disasters, a 241-page hard-cover book devoted to (20) mishaps through the ages, plus (33) experiments based on the principles that caused them; or Potentially Catastrophic Science, 306 pages with (50) experiments ranging from pre-history to the present. Taken together, they cover everything from collapsing cathedrals and sunken boats to sonic booms and batteries.

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KIDS ENGINEERING DISASTERS BOOK WITH EXPERIMENTS

Falling Down & Blowing Up!

Nothing says fun science like stuff blowing up or falling down. Ask any middle-schooler. Get them started with one of these excellent books: Massively Epic Engineering Disasters, a 241-page hard-cover book devoted to (20) mishaps through the ages, plus (33) experiments based on the principles that caused them; or Potentially Catastrophic Science, 306 pages with (50) experiments ranging from pre-history to the present. Taken together, they cover everything from collapsing cathedrals and sunken boats to sonic booms and batteries.

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Fun In The Sun

Just what can solar power…power? Find out with RobotiKits 6 In 1 Educational Solar Kit that comes with one solar module and one gear box, and 21 snap-together plastic parts. No tools required. Build 6 different solar-powered models (windmill, revolving plane, airboat, plane, car, solar puppy) or one of your own. Assembled units are roughly 4" across, in varying heights. For age 10 and up.

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6 IN 1 SOLAR ROBOTIKITS

Fun In The Sun

Just what can solar power…power? Find out with RobotiKits 6 In 1 Educational Solar Kit that comes with one solar module and one gear box, and 21 snap-together plastic parts. No tools required. Build 6 different solar-powered models (windmill, revolving plane, airboat, plane, car, solar puppy) or one of your own. Assembled units are roughly 4" across, in varying heights. For age 10 and up.

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$22.95 EACH

Let There Be Light

See what you're saying? This basic sound-to-light kit from Velleman® has (4) red, high-intensity LEDs that react simultaneously to every sound in a square rather than the traditional bar graph. Use it for plain old fun--like "watching music"--or something more practical, like aiding the hearing impaired by making the lights indicate when the telephone or doorbell is ringing. Adjustable sensitivity for sound versus light, and comes with a built-in microphone. You add a 9V battery and a case if you want one. Requires minimal soldering skills.

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VELLEMAN® SOUND TO LIGHT KIT

Let There Be Light

See what you're saying? This basic sound-to-light kit from Velleman® has (4) red, high-intensity LEDs that react simultaneously to every sound in a square rather than the traditional bar graph. Use it for plain old fun--like "watching music"--or something more practical, like aiding the hearing impaired by making the lights indicate when the telephone or doorbell is ringing. Adjustable sensitivity for sound versus light, and comes with a built-in microphone. You add a 9V battery and a case if you want one. Requires minimal soldering skills.

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$7.75 EACH

Build Your Own Thrill Ride

This 79-piece Roller Coaster construction kit features (40) challenges with (4) degrees of difficulty, and has, the manufacturer says, “more than 100,000 unique building possibilities,” which ought to tie up the little buggers for a while. Includes track and post pieces, and challenge cards. For ages 6+.

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ROLLER COASTER CONSTRUCTION KIT

Build Your Own Thrill Ride

This 79-piece Roller Coaster construction kit features (40) challenges with (4) degrees of difficulty, and has, the manufacturer says, “more than 100,000 unique building possibilities,” which ought to tie up the little buggers for a while. Includes track and post pieces, and challenge cards. For ages 6+.

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$29.95 EACH

Closed-Cycle Power

This excellent and beautiful Stirling engine would make Robbie Stirling himself proud. Has a 1/2" piston stroke and sits on a 7" x 3-1/2" wooden base. Comes with a small alcohol lamp to fire it, and is connected via a belt to a DC generator that fires some blue LEDs. Includes a spare hot gas container, power cylinder and piston-sealing ring, needle roller and silicon tube, which you shouldn't need for some time. You also get a trio of Allen wrenches for your tweaking needs. This is the ultimate desk toy, or demo unit for the more serious-minded. Check out our short video on Youtube!

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STIRLING ENGINE/GENERATOR

Closed-Cycle Power

This excellent and beautiful Stirling engine would make Robbie Stirling himself proud. Has a 1/2" piston stroke and sits on a 7" x 3-1/2" wooden base. Comes with a small alcohol lamp to fire it, and is connected via a belt to a DC generator that fires some blue LEDs. Includes a spare hot gas container, power cylinder and piston-sealing ring, needle roller and silicon tube, which you shouldn't need for some time. You also get a trio of Allen wrenches for your tweaking needs. This is the ultimate desk toy, or demo unit for the more serious-minded. Check out our short video on Youtube!

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$89.95 EACH

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