Scholastic Primary Science: Technology and Structures - Lighten Your Load Activities CD-ROM by Richard Cooper (author)

Lighten Your Load is a Year 4 module focusing on: what forces are and how simple machines use forces; pulleys and how they move loads; gears and the machines that utilise them; how machines improve our lives and how people design them; sources of energy used by machines, and how energy affects the environment.

The Activities CD-ROM has interactive versions of the Cards with expanded electronic presentations and activities for interactive whiteboards and computers.