Refer to the slinky example in the associated lesson if more explanation is required.)
(The answer is yes, tiny parts of the desk are moving with the sound wave. If you can hear a sound through your desk, does that mean your desk is moving? Take one minute to discuss with the people around you what is happening. Make sure they recognize that the sounds are louder with their ears to the desks.) Is there a difference? (Have a few students comment, one at a time. Now sit up and again scratch the desk surface. Have you ever noticed that you can hear sounds through solids? Everyone put your ear to you desk and scratch the surface with your fingernail. This activity works well accompanying a science unit on sound or waves. Students should be familiar with sound being described as a wave. International Technology and Engineering Educators Association - Technology
Tests are often designed to identify failure points or difficulties, which suggest the elements of the design that need to be improved.Īlignment agreement: Thanks for your feedback! Different solutions need to be tested in order to determine which of them best solves the problem, given the criteria and the constraints. Plan and conduct an investigation collaboratively to produce data to serve as the basis for evidence, using fair tests in which variables are controlled and the number of trials considered.Īlignment agreement: Thanks for your feedback! This activity focuses on the following Three Dimensional Learning aspects of NGSS: Plan and carry out fair tests in which variables are controlled and failure points are considered to identify aspects of a model or prototype that can be improved.Ĭlick to view other curriculum aligned to this Performance Expectation
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