Reducere. The frog magnet on the refrigerator fell and broke. Alex likes to make fun stuff from old broken things. She does a variety of experiments with the...
look under rocks, carti, carte straina, children's
Reducere. The 73 scientific experiments described in this book can easily be done by children on their own, without the supervision of a parent or teacher. E...
dover publications, carti, carte straina, lifestyle
Reducere. How do magnets generate electricity? What is antimatter? Is time travel possible? Discover the answers to these and over 90 other big questions tha...
Reducere. 2012 Reprint of 1936 Edition. Exact facsimile of the original edition, not reproduced with Optical Recognition Software. After arriving in the Unit...