ESS2.C: The Roles of Water in Earth’s Surface Processes

In this video Paul Andersen explains the vital role that water plays in the processes on the Earth's surface.  Water has several unique properties including high heat capacity, transparency, polarity and the ability to change the chemical behavior of the mantle.  The Earth is largely a water planet but most of the water is found in the oceans or locked in ice.  Water is a powerful erosive force on the planet.  A K-12 teaching progression 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

SEP5: Using Mathematics and Computational Thinking

Paul Andersen explains how mathematics and computational thinking can be used by scientists to represent variables and by engineers to improve design.  He starts by explaining how mathematics is at the root of all sciences.  He then defines computational thinking and gives you a specific example of computational modeling.  He finishes the video with a teaching progression for this practice.