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Bobrowsky discusses what can students see during the Apr 8, 2024 solar eclipse. He says that the Apr 8, 2024 solar eclipse will probably be the last one until 2045. You should start making plans to be at the path of totality on that date. If you are in other areas then, as with the Oct 14 eclipse, you will see only a partial eclipse and will not experience all of the phenomena. For most locations, totality will occur in the early- or mid-afternoon, and a partial eclipse will be visible for about an hour and a quarter before and after totality. Consider getting \"eclipse glasses\". These will allow you--and your students--to safely look at the Sun whether or not there is an eclipse in progress. He also emphasizes that being outside during an eclipse carries no additional risk beyond what you would experience on any other sunny day. Students can use the same pinhole projectors that they made for the Oct 14 eclipse.

Heat is the flow of energy from one object to another object because of their difference in temperature. And that energy--thermal energy--results from the random motion of atoms and molecules. The molecules move around, bouncing off of each other and bouncing off anything with which the object comes into contact. The hotter the object, the faster the molecules are moving. If you have a hot pot on the stove, the molecules in that pot are moving around very fast. If you touch that pot with your finger, some of those fast-moving molecules in the pot slam into the molecules in your skin! Just as a fast-moving bowling ball transfers lots of energy to the pins, the pot molecules transfer lots of energy to your skin molecules, making them move very fast. And, having fast-moving molecules in your skin means that your skin is now hot. At a microscopic level, that's why you get burned when you touch a hot pot.

Information on the cycles in the sky can students observe is presented. Starting in the first grade, students should be learning that the appearance of the Sun, Moon, and stars demonstrates regular patterns or cycles. They can observe daily cycles, monthly cycles, and yearly cycles.

Bobrowsky talks about waves. Waves are regular patterns of motion, which move, or propagate, through some substance, like air or water--or anything. Light waves are a special case, which can also move through empty space.