http://www.teachengineering.org/view_activity.php?url=collection/wpi_/activities/wpi_mobile/mobile_sue.xmlactivitytext/xmlCenter for Engineering Educational Outreach, balancecenter of massmobile

Students creatively construct mobiles to balance oddly shaped objects while learning about the concept of the center of mass.

Finding the center of mass is a key factor in many engineering designs. For example, in designing cars, bicycles and all kinds of vehicles, and in designing tools and other objects to make sure that while they are in motion the objects behave as intended. 0350TeachEngineering.orgAdebayo Adeyinka, Lee Fisher, Mark LiffitonS1004833MassachusettsMathDescribe, model, draw, compare, and classify two- and three-dimensional shapes, e.g., circles, polygons—especially triangles and quadrilaterals—cubes, spheres, and pyramids.34S1022C10MassachusettsMathIdentify three-dimensional shapes (e.g., cubes, prisms, spheres, cones, and pyramids) based on their properties, such as edges and faces.56United StatesCopyright 2012 - Center for Engineering Educational Outreach, Tufts Universityhttp://www.teachengineering.org/policy_ipp.phphttp://www.teachengineering.org/2011-11-063Teacher