Grade+3+-+Simple+Machines

=Rationale=

This Unit is important, because it allows students to gain an understanding of the simple machines we use in daily lives. This is also important because it allows students to understand how machines make our lives easier. Students will also gain the prospective of an inventor throughout this project because they will be required to think of an everyday task and how they could construct a machine to complete that task. This unit will help students develop a critical lens when they are looking at things people often take for granted everyday. It will also help students to look at compound machines and see where the simple machine exists within a more complex one.

Safety Concerns
Students will need to be warned and reminded that these machines have their purpose and are not to be fooled around with.

Students need to be aware that they should be cautious around: Wedges, as they are used to cut things Gears and pulleys, as things can be caught in them

When constructing compound machines or working with simple machines it is important that students know the expectations and are not acting up.

=LESSONS=



[] [] http://www.youtube.com/watch?v=4hbzZ5PECyc&feature=related




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http://www.youtube.com/watch?v=5gbt9BLrOIQ