Primary/Junior (Gr. 3-5) Canadian (3z...(Bwell written, informative series will engage the reader and spark... interest in learning how simple machines make daily jobs easier. Colourful and well organized, each title discusses a simple machine using a similar format... beginning with a definition... historical uses and modern applications are included. Appealing, vivid coloured photographs, bordered pages and large print all add to the appeal... Information is clearly explained... vocabulary is appropriate... Scientific terms are highlighted and defined in a glossary. Each text contains... an experiment that students can do to further understand the concept... Websites for further study are included... in summary, the final 2-page spread... highlights 10 comprehensive questions. Each volume has a table of contents, short glossary and an index... Pulleys be used to perform simple tasks... or more complex tasks... by combining... pulleys... Force and friction is also discussed... engaging series... filled with interesting... concepts... hands-on activities... concise... information... (3z <(BU+2013> Resource Links, Apr/10.

Includes index.

What is a pulley -- Get into the groove -- Down the right path -- What they are all about -- Simple machines -- The origins of the pulley -- Engineering -- Pulleys in your world -- Pulling your way through -- Science in action -- What have you learned?.