Tag «shadows»

Learning Critical Thinking Through Astronomy, Week 11

This week was mostly devoted to informal formative assessment (I’m really beginning to hate those words). Students were asked to explain aspects of a stick’s shadow’s behavior in terms of, for example, Sun’s diurnal and annual motions. Example questions would be something like: “In one sentence, explain why a stick’s noon shadow changes length during …

Learning Critical Thinking Through Astronomy, Week 7

The week began with my expectation that students had watched a YouTube clip showing an excerpt from Carl Sagan’s COSMOS series in which Sagan explains Eratosthenes’ work with shadows. Students don’t realize it yet, but this topic is the culmination of all of the previous activities. It’s the reason for the critical thinking activities. It’s …

Learning Critical Thinking Through Astronomy, Week 5

I originally had one set of plans for this week but as sometimes happens, those plans changed radically. Instead of starting in on the next series of activities, we spent some time doing some formative assessment (and I’m really beginning to hate the word “assessment” because of the current political climate in which it’s (mis)used …

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