Intermediate Simple Machines: Pulleys
$9.95
{{option.name}}:
{{selected_options[option.position]}}
{{value_obj.value}}
Straightforward diagrams of the individual segments of a pulley are combined with humorous, practical applications of fixed and moving pulleys as intrepid caveman Zog adapts these simple machines to Stone Age life. “As entertaining as it is educational.” — Science Books & Films. CINE-Golden Eagle 12 Minutes | Color
Show More
Show Less