What else could we ask students:
Instead of using a tape measure, have the students decide what their measurement tool would be. For example, the could measure the length of someone's shoe and measure the distance in relative shoe lengths. This would get kids to appreciate that measurement units are based on a standard.
Ask some questions about time. Now that they know the distance, how long would it take to drive to the moon for example.
Students who finish early:
Ask them to provide some technical help to other groups as needed.
Ask them to determine how many earths could fit into some of the larger planets.
Left out:
Perhaps students could be given a challenge to go with the video aspect. For example, tell them they have a 30 second time limit for the video they submit and their job is to determine the essential parts of the set up, execution and analysis of the lab and capture those moments within the time limit. This would prevent the teacher from having to wade through lots of useless footage and make somewhat simple labs and procedures a bit more challenging.
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