Snowball Launchers, Giant-Pumpkin Growers, and Other Cool Contraptions pdf epub mobi txt 电子书下载 2024

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Tom Fox

Sterling Pub Co Inc

2006-9

128

80.00元

Pap

9780806955155

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发表于2024-09-22

Snowball Launchers, Giant-Pumpkin Growers, and Other Cool Contraptions epub 下载 mobi 下载 pdf 下载 txt 电子书下载 2024

Snowball Launchers, Giant-Pumpkin Growers, and Other Cool Contraptions pdf epub mobi txt 电子书下载 2024

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One look at any of these gadgets you can make, and your friends will call you a mechanical genius—or a mad scientist! Build a rocket-propelled toy car or a secret place to hide your treasures from snooping little kids. Grow a pumpkin so big, even an adult can’t lift it. Make an automatic dog feeder, a mechanical snowball thrower, or some storm-predicting bells. All fifteen “Amazing Stuff” projects produce toys that are more than playthings. Yet all you need are some pieces of wood, nails, oatmeal boxes, jar lids, and Popsicle sticks. And you just use a hammer, screwdriver, and other tools from around the house—plus a couple of cheap electric motors you can buy at any electronics store.

Snowball Launchers, Giant-Pumpkin Growers, and Other Cool Contraptions 下载 mobi epub pdf txt 电子书