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Sh-h-h-h-h-h!! Top Secret... Crack the code of superspy science fun! Make your own spy sunglasses * Write messages with invisible ink * Hook up a secret alarm, and much more! Discover how spies use science to keep--or uncover--top secrets.Learn how to go under cover, master Morse code, and even builddevices to see and hear through walls! These and dozens of otherfun-filled activities give you an inside look at the science behindspy gadgets and tricks of the trade. All the activities arecompletely safe and can be done with everyday stuff from around thehouse.
Sh-h-h-h-h-h!! Top Secret... Crack the code of superspy science fun! Make your own spy sunglasses * Write messages with invisible ink * Hook up a secret alarm,
A riveting true story of industrial espionage in which a Chinese-born scientist is pursued by the U.S. government for trying to steal trade secrets, by a finali
This book is different from other I spy books. We provide many words about science for children. With a ton of cute pictures inside. Your kids will love this "I
'How does it work? Why does it do that? What will happen if . . .?' Questions curious kids ask about everyday things from breathing to popcorn! Tracey Schofield
