Remember when you were a kid playing on the playground and you thought you could just dig a hole to another continent? All in the span of a 30 minute recess block. Oh, the innocent days. It’s funny looking back now and knowing what I do now. For one, I know that I wouldn’t be just digging up sand for miles and I also know that humans haven’t even been able to drill to the center of Earth.
As crazy as digging a hole deep enough to reach a different country sounds, it’s not that far off from what students may think before starting your unit. One of the things I usually learn when introducing Earth’s layers is that there are quite a few students who do not know that Earth even has layers. Students may come in with the misconception that Earth has a uniform composition and that it’s just a bunch of rocks.
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