ESS2.B: Plate Tectonics and Large-Scale System Interactions

In this video Paul Andersen explains how plate tectonics explains the large-scale system interactions on our planet.  Large plates float on the mantle and interact to form the major landforms on the planet.  Evidence for plate tectonics include the location of earthquakes, the reversed polarity of newly formed oceanic crust and the warping of crust by large bodies like glaciers and lakes.  A K-12 teaching progression is also included.

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.

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.