Robert Friedhoffer

Science Lab in a Supermarket (Physical Science Labs)

Robert Friedhoffer

$50.79

Physics Lab in a Hardware Store (Physical Science Labs)

Robert Friedhoffer

$13.09

Physics Lab in the Home (Physical Science Labs)

Robert Friedhoffer

$41.19 - $47.09

Physics Lab in a Housewares Store (Physical Science Labs)

Robert Friedhoffer

$36.29 - $42.69

Toying Around With Science: The Physics Behind Toys and Gags

Robert Friedhoffer

$8.69 - $11.09

Everything you need for Winning Science Fair Projects: Grades 5-7 (Scientific American Winning Science Fair Projects)

Robert Friedhoffer

$7.59

More Winning Science Fair Projects: Grades 5 - 7 (Scientific American Winning Science Fair Projects)

Robert Friedhoffer

$5.09 - $5.69

Magic Tricks, Science Facts

Robert Friedhoffer

$10.09 - $11.49

Physics Lab in the Home

Robert Friedhoffer

$12.09

Magic and Perception: The Art and Science of Fooling the Senses (What Happened Next? Series)

Robert Friedhoffer

$4.79 - $7.89

How to Haunt a House for Halloween

Robert Friedhoffer

$6.59 - $22.89

Molecules and Heat (Scientific Magic Series, Bk. 3)

Robert Friedhoffer

$15.99

Magnetism and Electricity (Scientific Magic Series, Bk. 6)

Robert Friedhoffer

$7.29

Matter and Energy, Book 1 (Scientific Magic Series)

Robert Friedhoffer

$12.59

Forces, Motion, and Energy (Scientific Magic Series)

Robert Friedhoffer

Out of Stock

Magic Show

Robert Friedhoffer

Out of Stock

Light (Scientific Magic Series, Book 5)

Robert Friedhoffer

Out of Stock

More Magic Tricks, Science Facts: The Madman of Magic

Robert Friedhoffer

Out of Stock

More Magic Tricks, Science Facts

Robert Friedhoffer

$15.89

Sound (Scientific Magic Series, Bk. 4)

Robert Friedhoffer

Out of Stock

Everything you need for Simple Science Fair Projects: Grades 3-5 (Scientific American Winning Science Fair Projects)

Robert Friedhoffer

Out of Stock