PS4.C: Information Technologies and Instrumentation

In this video Paul Andersen explains how humans use information technology and instrumentation to better understand their surrounds.  Technologies (including X-rays, computers, and phones) use electromagnetic waves to improve the lives of humans.  A teaching progression K-12 is also included.

SEP6: Constructing Explanations and Designing Solutions

Paul Andersen explains how scientists modify theories by constructing explanations.  He also discusses the cycle of design used by engineers to solve problems.  He starts by defining a theory as a well-established explanation of a phenomenon that is refined over time.  Examples discussed in the video include the big bang theory, the germ theory and the theory of natural selection.  He also lays out a progression for building this skill in students.