PS3.B: Conservation of Energy and Energy Transfer


Paul Andersen explains how energy is conserved within a system.  In both macroscopic and microscopic collisions the amount of energy before the collision is equal to the amount after.  He then defines heat as energy transfer between objects with different temperatures.  He explains how heat is transferred via conduction, convection and radiation.  A teaching progression K-12 is also included.

PS3.A: Definitions of Energy


In this video Paul Andersen attempts to explain the age old questions - What is Energy?  Even though it comes in many forms one of the defining characteristics of energy is that it is conserved over time.  He then explains that all energy is either a function of motion, due to its position within a field or radiation.  A teaching progression K-12 is also included.

CCC3: Scale, Proportion, and Quantity


In this video Paul Andersen explains the importance of scale in science and engineering.  The Universe varies in size along three scales: size, timespan, and energy.  Many phenomenon are too small and fast, or two large and slow to observe.  We use the tools of proportion and units of measure to comprehend different scales.  The video ends 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.