PS4.A: Wave Properties


In this video Paul Andersen describes some of the properties of waves.  He starts be identifying particles and waves as the only phenomenon that can transfer energy from place to place.  He identifies the defining characteristics of waves; wavelength, frequency and amplitude.  He defines sound as the movement of compressional waves through air and resonance as waves interfering both constructively and destructively.  A teaching progression K-12 is also included.

CCC2: Cause and Effect


In this video Paul Andersen explains cause and effect its importance in science and engineering.  He starts by addressing the chain of interactions that must be present to show cause and effect.  He addresses the assumptions of universality and scale in determining cause and effect.  He finished the video with a progression of instruction from K-12.

SEP3: Planning and Carrying Out Investigations


Paul Andersen explains how investigations are used by scientists to answer questions and by engineers to test designs.  He delineates be investigative and observational science.  He demonstrates the formation of a good question the design of an effective investigation.