Catherall, Ed creator Author Smithers, Chris Illustrator text cb East Sussex Wayland Publishers Limited 1982 monographic eng

print

32 pages : color illustrations ; 24 cm Levers and ramps are so widely used that it is easy to take them for granted. Such everyday items as scissors, bottle-openers, wheelbarrows and seesaws are all ramps of all sizes and slopes. The experiments in this book will help to create an understanding of levers and ramps, how they work, and how we use them. R 700 Lexile estimate R Raz-Plus Ed Catherall Force Levers Motion Pulleys Q164 C 531.8 0853409161 FISKH 260114 20260114102933.0 9484 eng