PS2.B: Types of Interactions


Paul Andersen explains how objects interact when touching and at a distance.  Electromagnetic forces are very important when objects are touching and fields explain both electromagnetic and gravitational forces.  The strong and weak nuclear forces can result in radioactive decay.  A brief description of Newton's Law of Universal Gravitation and Coulomb's Law are includes.  A teaching progression from grades 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.

CCC1: Patterns


Paul Andersen explains patterns and describes why pattern recognition is an important skill in science and engineering.  He begins by discussing patterns in nature, including snowflakes, flower petals, seasons and nucleotides in DNA.  He then illustrates the importance of classification in describing and eventually understanding patterns.  He gives a progression instruction in the science classroom from grade K to 12.  A secret pattern is hidden within the video.

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.