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Go Ballistic

Nothing to it with William Gurstelle's "Backyard Ballistics," a soft-cover, 169pp compendium by an engineer on constructing rockets, cannons (carbide and spud), flingers, tennis ball mortars, balloons, fire kites, and other intriguing devices, all with common household materials. The detailed text includes parts lists, illustrated instructions, photos and quite sensible and necessary safety precautions. From Chicago Review Press.

92823 BACKYARD BALLISTICS
$16.95 EACH

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Make The Jack Of You!

There are endless uses for this deck of (60) blank playing cards from Roylco®. The backs are a star-and-dingbat pattern, white on red. The fronts are blanks, waiting for you to create flash cards for classrooms, whole new games of your own, or a custom deck of cards with your very own design. (Make yourself the King of Hearts, or create the six of pickles!) Already achieved Satori? Leave 'em blank and play Zen Solitaire. Standard card size: 3-7/16" x 2-7/16".

93632 BLANK CARDS
$3.95 EACH

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Nose Sharpener

Stick the dull, but leaded end of your wooden pencil into the left nostril of this nose and twist clockwise. You will be rewarded with a shiny sharp point on the pencil and a curl of shavings on your desk, lap or floor. Pretty good performance for a life sized, flesh colored piece of hard plastic!! If you want to sharpen things up around the office or home, send for the following item, and prove you have a nose for great deals!!

89102 NOSE SHARPENER
$3.75 PKG(3)

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Picture-Perfect Globe

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

It's a one-foot-wide world on this 12" dia inflatable globe/beach ball and it couldn't be more accurate, since the world is depicted in genuine, if small, satellite-photo images (It IS a big blue marble!). Perfect for an eerie, after-dark game on the beach, too, because the ball lights up with an internal LED powered by the (3) button-cell batteries in it. Almost unearthly!

94313 LIGHTED INFLATABLE EARTH BALL
$11.95 EACH

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Timing Is Everything

Call it the no-excuses timer, with sound and light and a warning mode to alert even the most distracted. With 360° viewing, it's perfect for test day, or for the kitchen if you've learned to tune out that little "bing!" sound. Has both a standard timer and warning timer that set separately for intervals from five minutes to two hours. The 2-3/8" dome lights up green while counting down, flashes yellow when warning, and flashes red when it's time to put those #2 pencils down. Or check the cake. The sound is doorbell-dingy and adjustable for volume. Stands 4-3/4" tall in a squat lighthouse shape. You add (3) "AAA" batteries.

94258 TIME TRACKER 2 HOUR FLASHING TIMER
$19.95 EACH

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Scientific Bonanza

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!

92047 AMATEUR SCIENTIST CD 3.0
$29.95 EACH

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Whiz-Bang Wood Projects

A whole new take on wooden toys. You get plans for (28) toys that "whiz, spin, pop, and fly" in Bob Gilsdorf's 223-page instruction book. Good for adults, even better for adults working with kids, the projects require only basic hand tools, including a coping saw and miter saw. You'll make shooters, launchers, games, toys, gumball machines and much more. Includes an appendix with basic woodworking lessons. Full color, lavishly illustrated with easy-to-follow directions and photos of the zany paint jobs on the finished products.

93842 WOOD TOY BOOK
$19.95 EACH

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Data Reader-Ruler

From Helix®, this 9"/23cm computer ruler has English and metric measurements on opposing sides, marked in 1/16" and 1mm increments. In blue-tinted plastic, it has an open slot to help isolate lines of text in printouts, a section with very slight magnification for the same use, and (2) lines-of-text counting scales that run vertically.

39623 DATA RULER
$3.50 PKG(2)

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Color-For The Arts & Sciences

Good across the occupational spectrum, from visual artists to physics teachers-this full-service color paddle set comes with red, blue, green, cyan, magenta, and yellow gels; (2) diffraction grating gels-(1) at 13.5 lines/inch, double axis, and (1) 500 lines/mm; (2) polarizing filters; and (1) translucent white diffusing filter with 63% transmission. All gels and filters are 2-1/8" x 2-5/8" in cardboard frames 5-7/8" long, and there's a built-in spectral transmission chart for primary and secondary colors. Made in the USA.

92683 COLOR PADDLE
$10.95 EACH

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Squatty Little Two-Way Pen

Short, shaped like a bullet, able to write two ways…it's a bird, it's a plane, no, it's Squatty, our short and chunky pen with red and black ballpoints hiding inside. Measures 4-3/16" long x 9/16" dia in dark blue with a pocket clip. You turn it one way for black ink, the other for red, and there's even a little window to see which ink you've selected.

40400 TWO WAY PEN
$3.75 PKG(3)

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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, and a newspaper-like set of instructions includes 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.

94250 ASSEMBLED VAN DE GRAAFF GENERATOR
$139.95 EACH
94057 VAN DE GRAAFF BELT
$14.95 EACH

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