OpenSciEd Unit 8.2 · Lesson 03 · 3.A
Look for: Students should make a claim like “All solid…
From Teacher Edition
Facilitation guidance from the lesson plan — what to notice in student thinking and how to respond while teaching.
Building towards
3.A Engage in argument from evidence to support or refute our predictions about whether all solid objects vibrate (cause) when they make sounds (effect), even when we cannot see them vibrate.
What to look / listen for
Students should make a claim like “All solid objects vibrate when they make sounds.”
- Evidence should include observations of the drum and the rock on the table.
- Reasoning needs to make a connection between the sound and the vibration they can’t see that is detected by the laser.
What to do
If students have a claim that the table is not vibrating, ask them what evidence they have to support that. Ask them how they can explain the movement of the laser if there is no movement happening from the table. You could lead a class discussion with students arguing for either side. If students are struggling with the “Reasoning” section, you might provide more sentence starters or fill in the blanks for that part. See How do objects move when they make sounds? for an example.