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BEST SELLERS

FLIGHT OF FANCY

If the question is whether to tie a bunch of these giant latex professional weather balloons to a lawn chair, the answer is no. (The balloon bursts at about 82,000 feet anyway.) This is a true high altitude weather balloon, with plenty of fun, nonfatal uses. The cream-colored latex balloon is approx 60" dia when flaccid, you should pardon the expression, but has an 14-foot dia when inflated. The neck is 9" long x 3" dia. Scientists and meteorologists launch balloons to measure atmospheric conditions like wind speed and air pressure for weather forecasting, but clever inventors, teachers and the imaginative filmmaker are warned to launch the balloon carefully. The synthetic rubber material is delicate and not made to survive brushes with pavement, pine branches, or clumsy physics students. Have fun, and launch safely.

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14 FOOT LATEX WEATHER BALLOON

FLIGHT OF FANCY

If the question is whether to tie a bunch of these giant latex professional weather balloons to a lawn chair, the answer is no. (The balloon bursts at about 82,000 feet anyway.) This is a true high altitude weather balloon, with plenty of fun, nonfatal uses. The cream-colored latex balloon is approx 60" dia when flaccid, you should pardon the expression, but has an 14-foot dia when inflated. The neck is 9" long x 3" dia. Scientists and meteorologists launch balloons to measure atmospheric conditions like wind speed and air pressure for weather forecasting, but clever inventors, teachers and the imaginative filmmaker are warned to launch the balloon carefully. The synthetic rubber material is delicate and not made to survive brushes with pavement, pine branches, or clumsy physics students. Have fun, and launch safely.

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$34.95 EACH

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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You Make Mistakes?

Who among us doesn’t? Even a just man falls seven times. Just get this little eraser wheel, 1-7/8" dia x 3/8" thick in latex-fee rubber. The plastic housing rotates to keep it closed and schmutz-free in your drawer, just waiting for you to err.

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LATEX-FREE RUBBER ERASER WHEEL

You Make Mistakes?

Who among us doesn’t? Even a just man falls seven times. Just get this little eraser wheel, 1-7/8" dia x 3/8" thick in latex-fee rubber. The plastic housing rotates to keep it closed and schmutz-free in your drawer, just waiting for you to err.

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$3.95 PKG (3)

Ceramic Power

Ferrite ceramic magnets can be quite powerful and have excellent resistance to demagnetization. These rectangular ones are no exception. Add the power of surplus and we'll give you a bunch of these mighty-mites at an uber-bargain price. Measures 1-7/8" x 7/8" x 3/8" thick with a 3-lb pull. Perfect for mounting even big pix on the fridge.

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3-LB CERAMIC MAGNET

Ceramic Power

Ferrite ceramic magnets can be quite powerful and have excellent resistance to demagnetization. These rectangular ones are no exception. Add the power of surplus and we'll give you a bunch of these mighty-mites at an uber-bargain price. Measures 1-7/8" x 7/8" x 3/8" thick with a 3-lb pull. Perfect for mounting even big pix on the fridge.

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$3.25 PKG (2)

Lightning Bolts!

The next best thing to lightning bolts! 200,000 volts of electrostatic energy created by our Van de Graaff generator. Measures 6-1/2” diameter by 15” tall, includes a spare belt and a set of instructions detailing lots of fun experiments. For grade 6 and up. This is not a toy and should be used under adult supervision. A great tool for teaching about electricity. For your convenience, we now have Lightning Belts: replacement belts to drive that overworked generator.

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ASSEMBLED VAN DE GRAAFF GENERATOR

Lightning Bolts!

The next best thing to lightning bolts! 200,000 volts of electrostatic energy created by our Van de Graaff generator. Measures 6-1/2” diameter by 15” tall, includes a spare belt and a set of instructions detailing lots of fun experiments. For grade 6 and up. This is not a toy and should be used under adult supervision. A great tool for teaching about electricity. For your convenience, we now have Lightning Belts: replacement belts to drive that overworked generator.

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$139.95 EACH

Look Sharpie®

Genuine, original, accept-no-substitutes brand-name Sharpie®s for when you really mean it and want a permanent marker. You pick the fine point red or blue, or the blue with a 3/16” bullet tip.

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BLUE SHARPIE® FINE POINT MARKER

Look Sharpie®

Genuine, original, accept-no-substitutes brand-name Sharpie®s for when you really mean it and want a permanent marker. You pick the fine point red or blue, or the blue with a 3/16” bullet tip.

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$3.95 PKG (3)

Chalk Of Many Colors

White chalk is fine but imagine the possibilities of a full palette of colors. Looks nice, right? Our box is (16) pieces of washable chalk at 3-1/8” long x 3/8” dia, and you’ll get (3) boxes, each with (2) pieces of green, purple, yellow, pink, hotter pink, blue, orange and white, which is a color too.

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16-PIECE COLORED CHALK SET

Chalk Of Many Colors

White chalk is fine but imagine the possibilities of a full palette of colors. Looks nice, right? Our box is (16) pieces of washable chalk at 3-1/8” long x 3/8” dia, and you’ll get (3) boxes, each with (2) pieces of green, purple, yellow, pink, hotter pink, blue, orange and white, which is a color too.

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$3.95 PKG (3)

Here's my Card

Clever little plastic boxes 4-1/2" x 2-1/4" x 1" hold note paper - and dispense one sheet at a time as you open and close the cover. The clear red box is labeled "Mom". They work even better with business cards, so they make great little gifts if Mom has her own cards. We'll send you a bag of (3) with each order. 

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MOM MEMO PAD BOXES

Here's my Card

Clever little plastic boxes 4-1/2" x 2-1/4" x 1" hold note paper - and dispense one sheet at a time as you open and close the cover. The clear red box is labeled "Mom". They work even better with business cards, so they make great little gifts if Mom has her own cards. We'll send you a bag of (3) with each order. 

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$1.95 PKG (3)

Water Prism

Why do your feet look like they are attached at a different angle when you're standing in water at the beach? Teach the children with this plastic water prism. Also make rainbows. Measures 8-1/4" x 2" x 1" with 3/8" squares across the surface to measure refraction.

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8-1/4" WATER PRISM

Water Prism

Why do your feet look like they are attached at a different angle when you're standing in water at the beach? Teach the children with this plastic water prism. Also make rainbows. Measures 8-1/4" x 2" x 1" with 3/8" squares across the surface to measure refraction.

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$2.75 EACH

Slide On Over

You choose between our 2" square classroom demonstration slides. The diffraction grating slide has 500 lines per mm resolution and a wavelength chart; the linear polarized filter slide has a 1-3/8” x 15/16” window. Nice for classroom and home-schooling use. Made in the USA.

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DIFFRACTION SLIDE

Slide On Over

You choose between our 2" square classroom demonstration slides. The diffraction grating slide has 500 lines per mm resolution and a wavelength chart; the linear polarized filter slide has a 1-3/8” x 15/16” window. Nice for classroom and home-schooling use. Made in the USA.

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$3.25 PKG (4)

It’s A Small World After All

A tad smaller in diameter than a ping pong ball, this colorful steel geographic globe is 1-3/8" dia, but pull out the little base it stands on and you’ll find a small pencil sharpener hidden inside. Also suitable for hiding secret messages, which is always handy.

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SMALL GLOBE PENCIL SHARPENER

It’s A Small World After All

A tad smaller in diameter than a ping pong ball, this colorful steel geographic globe is 1-3/8" dia, but pull out the little base it stands on and you’ll find a small pencil sharpener hidden inside. Also suitable for hiding secret messages, which is always handy.

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$3.75 PKG (2)

Pretty Protractors

When we were your age, our protractors were all just plain clear plastic. You kids today can get them in translucent blue, red, orange, purple or green, but we're going to pick because we didn't get to then. These pretty ones are 6" wide and read from 0-6" x 1/16" on the bottom and from 0-180 degrees x 0.5-degrees bidirectionally along the arc. Include holes for a 3-ring binder.

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HELIX® COLORED PROTRACTORS

Pretty Protractors

When we were your age, our protractors were all just plain clear plastic. You kids today can get them in translucent blue, red, orange, purple or green, but we're going to pick because we didn't get to then. These pretty ones are 6" wide and read from 0-6" x 1/16" on the bottom and from 0-180 degrees x 0.5-degrees bidirectionally along the arc. Include holes for a 3-ring binder.

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$3.95 PKG (3)

Great Big Periodic Table

The kind you hang in the front of the laboratory or on the classroom wall, which is what we suggest you do with this one. Measures 38" x 50" and is laminated to protect it from flying students. Has an aluminum frame and hang tabs on the back side. Brand new! Great quality. Please note: This item is not available for expedited shipping.

 

Please Note: Your entire order will ship standard ground when purchasing this item and the actual shipping costs will be charged. Thanks!


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LARGE PERIODIC TABLE POSTER

Great Big Periodic Table

The kind you hang in the front of the laboratory or on the classroom wall, which is what we suggest you do with this one. Measures 38" x 50" and is laminated to protect it from flying students. Has an aluminum frame and hang tabs on the back side. Brand new! Great quality. Please note: This item is not available for expedited shipping.

 

Please Note: Your entire order will ship standard ground when purchasing this item and the actual shipping costs will be charged. Thanks!


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$54.95 EACH

Simple Circuit

An easy way to light up the kids' eyes! Teach them to wire a simple circuit with our basic components.

  • The knife switches are mounted on a plastic bases. 
  • The miniature plastic socket holds a standard flashlight bulb with a 14 mm dia screw base. 
  • We pack 6 volt and 3 volt round bulbs, or 1.5 volt bell-shaped bulbs, (5) to a package.(Bulbs are rated slightly higher to prevent them from burning out.)
  • Hook up the black plastic and metal 2" x 4-1/4" telegraph key with brass contacts and (2) terminal posts with nuts. 
  • Our blue-plastic holder for (1) "D" battery has a small tab at each end to hook a lead to, and a 1/8" square mounting hole at each corner. 
  • You add the mounting surface and the know-how. 
  • Actual bulb voltage listed in parenthesis.

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SCREW BASE SOCKET

Simple Circuit

An easy way to light up the kids' eyes! Teach them to wire a simple circuit with our basic components.

  • The knife switches are mounted on a plastic bases. 
  • The miniature plastic socket holds a standard flashlight bulb with a 14 mm dia screw base. 
  • We pack 6 volt and 3 volt round bulbs, or 1.5 volt bell-shaped bulbs, (5) to a package.(Bulbs are rated slightly higher to prevent them from burning out.)
  • Hook up the black plastic and metal 2" x 4-1/4" telegraph key with brass contacts and (2) terminal posts with nuts. 
  • Our blue-plastic holder for (1) "D" battery has a small tab at each end to hook a lead to, and a 1/8" square mounting hole at each corner. 
  • You add the mounting surface and the know-how. 
  • Actual bulb voltage listed in parenthesis.

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$5.95 PKG (5)

Plastic Magnets

It’s a scientific breakthrough! Oh, wait, no, it’s a rare-earth magnet encased in white plastic. Great for holding notes on your white refrigerator without clashing. Measures 1-1/4” x 3/8” x 5/16” and also has a piece of self-adhesive foam on the back to stick where magnets won’t grab.

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PLASTIC-ENCASED RARE EARTH MAGNETS

Plastic Magnets

It’s a scientific breakthrough! Oh, wait, no, it’s a rare-earth magnet encased in white plastic. Great for holding notes on your white refrigerator without clashing. Measures 1-1/4” x 3/8” x 5/16” and also has a piece of self-adhesive foam on the back to stick where magnets won’t grab.

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$3.95 PKG (3)
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NEW

Sharpener Missing?

Or are you just under heavy pressure to start writing right now! We know, we know. That’s why our copywriters always buy these pre-sharpened #2 pencils, to get those terrible jokes down on paper ASAP. And yes, they have erasers because sometimes we’re not funny, and we all make mistakes. In packs of (12) at 7-3/8” long.

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PRE-SHARPENED #2 PENCILS

Sharpener Missing?

Or are you just under heavy pressure to start writing right now! We know, we know. That’s why our copywriters always buy these pre-sharpened #2 pencils, to get those terrible jokes down on paper ASAP. And yes, they have erasers because sometimes we’re not funny, and we all make mistakes. In packs of (12) at 7-3/8” long.

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$2.95 PKG (2)

Just The Highlights, Please

You'll never lose your chance to highlight something when you hang your highlighter around your neck. These have a 3/16" wedge tip (every true highlighter's choice), and come with a pocket clip and a detachable 18" lanyard. You pick yellow or pink.

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YELLOW HIGHLIGHTER WITH LANYARD

Just The Highlights, Please

You'll never lose your chance to highlight something when you hang your highlighter around your neck. These have a 3/16" wedge tip (every true highlighter's choice), and come with a pocket clip and a detachable 18" lanyard. You pick yellow or pink.

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$3.25 PKG (3)

Erasable Tape

You can write on duct tape, but try to change your mind later and see what happens. We recommend these 12-foot x 1-7/8” wide rolls of dark gray chalkboard tape, which you can write on with, you guessed it, chalk; or the 12-foot rolls of the more modern dry-erase tape, which we’ll pick for you in either white or day-glo orange.

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ASSORTED COLORED DRY ERASE TAPE

Erasable Tape

You can write on duct tape, but try to change your mind later and see what happens. We recommend these 12-foot x 1-7/8” wide rolls of dark gray chalkboard tape, which you can write on with, you guessed it, chalk; or the 12-foot rolls of the more modern dry-erase tape, which we’ll pick for you in either white or day-glo orange.

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$3.95 PKG (2)

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