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.
PS1.A: Structure and Properties of Matter
In the first physical science video for the Next Generation Science Standards Paul Andersen explains the structure and properties of matter. He starts by explaining how all matter is made of about 100 smaller particles called matter. He explains a teaching progression for introducing the topic of matter K-12. This begins with a brief introduction to substances that can be scientifically observed at many levels. This eventually builds through molecules and pure substances to the subatomic structure of atoms and the importance of binding energy.
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.
SEP2: Developing and Using Models
Paul Andersen explains the importance of modeling in science and engineering. Models are used by scientists to explain phenomenon. Unlike mental models, conceptual models can be shared by all scientists to improve our understanding of the Universe. Engineers use models study systems and test designs.