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Go Ballistic

$16.95 EACH
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Go Ballistic
If you're devoted to explosions, and who isn't, you'll love the new expanded 2nd edition of William Gurstelle's Backyard Ballistics, now 25% longer, with 25% more ka-boomery. Still the go-to reference work for building rockets, cannons (carbide and potato), flingers, fire kites, electromagnetic pipe guns, tennis ball mortars, cleaner-bag balloons, ballistic pendula and petards. You simply can't have more fun with common household materials. The soft-cover, 210pp compendium includes detailed and illustrated instructions, parts lists and sensible ways not to be hoist on your own petard. Be careful out there.
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Knot For Everyone
Knot everyone knows how much fun knots are. You can join the knot knowledgeable with Knots, Splices and Rope Work an 88-page soft-cover book originally published in 1917. Includes detailed instructions for tying many dozens of knots, ties, bends, hitches, loops, nooses, lashings, seizings, splices and things like the Matthew Walker, Selvagee Tie, Flemish Eye and the Topsail-Halyard Toggle. Includes (4) pieces of nylon rope for practice. Will tie up a kid for weeks.
$12.95 EACH
Lego® Gets Kinetic
Make a whole bunch of fun and instructive Lego® machines/chain reaction models like marble runs and mousetraps involving ramps, buckets, funnels balances and much more. Comes with (33) Lego® elements, (6) Lego® balls, a dozen paper props, and a 78-page instruction booklet for (10) machines. You add a few common household items. Includes suggestions for more complicated devices if you have your own Lego® pieces, and if you don't, what are you waiting for? ! WARNING: CHOKING HAZARD–Small Parts. Not for children under 3 yrs. 
$20.95 EACH
Get Out Of The Lab
A whole bunch of science and scientific learning happens outside of the school lab. These 144-page books by Liz Lee Heinecke have a year’s worth (that’d be 52) of experiments. You pick: Outdoor Science Lab for Kids with (52) experiments in (12) units covering biology, gardening, botany, physics, earth science and chemistry, all with common household items; or Kitchen Science Labs for Kids, with experiments in biology, physics and chemistry using the ever-popular common household materials.
$24.95 EACH
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