It's hard for many upper elementary and middle students (who may be just transitioning from concrete to abstract thinking) to understand masses of air as discrete entities that move around, have different properties (ie. temperature, pressure, and moisture content), and that interact with each other (with consequences for weather).
The Clarification Statement suggests emphasizing
- how air masses flow from regions of high to low pressure, causing weather at a fixed location to change over time,
- that weather can change suddenly when very different air masses collide.
- air masses move in predictable patterns, which helps improve the probability of predicting the weather correctly.
MS-ESS2-5 involves thinking about the Crosscutting concepts Stability and Change and Cause and Effect.
How do you engage students with these concepts? What datasets, hands-on activities, maps, or other models have you found to be helpful for students working on this performance expectation?