Curious young minds can learn the basics of electronics as they build more than 100 exciting projects with this kit. Work on projects that make sound effects, engineer different types of alarms, build touch circuits and play games. Contains over 30 parts in all. No soldering is required -- pieces snap together. Requires 2 "AA" batteries, not included. Box measures 10" x 15" x 2".

CK-12 Earth Science covers the study of Earth - its minerals and energy resources, processes inside and on its surface, its past, water, weather and climate, the environment and human actions, and astronomy.

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This is an EXACT reproduction of a book published before 1923. This IS NOT an OCR'd book with strange characters, introduced typographical errors, and jumbled words. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book.