Grade Seven Science - Structures and Designs Science 7 Structures and Designs Unit overview Birds build nests. The nests of barn swallows are quite different from those of the oriole, although both use mud as a major component. Owls and woodpeckers don't use mud at all. There are numerous ways to make a nest.
Humans construct all sorts of structures for a variety of purposes.
Students here have an chance to examine the principles of construction and put their discoveries to use. Many structures or artifacts are designed to transmit or enhance the application of force. Structures must resist forces applied to them by wind, gravity, mechanical sources and other effects. Therefore, this unit could be integrated with the grade 7 unit Forces and Motion . Science writing and reading activities, as discussed in this Guide, should be incorporated into each lesson.