OpenSciEd 7.1, Lesson 2: Investigating Gas from Bath Bombs
Task
Use this resource with OpenSciEd Unit 7.1, Lesson 2. This is a digital companion used to deepen data sensemaking in Parts 5–6 and Part 8; it is not a standalone lesson. Use it in tandem with the OpenSciEd Teacher Edition. When to Use Tuva Day One Complete Parts 1–4 outside of Tuva. This includes the Navigation Routine, the whole-group demonstration of bath bombs being crushed inside a bag to see if the gas bubbles are trapped inside, and revisiting ideas about gases from former units. (Use pages 6–9 of the OpenSciEd Teacher Edition for guidance.) When you get to Part 5, plan the second investigation together, using pages 9–12. Then have students log into Tuva to carry out their investigation and record their data. Be sure students submit their group's data at the end of the class. Day Two Have students use Tuva's digital data tools to graphically explore the class data before beginning the Building Understanding Discussion, Part 6 of the Teacher Edition. Use pages 21–24 to facilitate. Sample data has been included, in case you need it, but we recommend having students overwrite the data with their own class's data. Pause to complete Part 7, Scaffold an Argument, outside of Tuva. Use pages 24–26 of the Teacher Edition. Return to Tuva for Part 8, Write an Argument. Students can type their argument directly in Tuva.
We have been wondering about bath bombs — specifically, where all those bubbles come from when a bath bomb hits water. At the start of this lesson, we collected some evidence that helped us figure out the gas was not trapped in the bath bomb to start with. But we also had another claim we wanted to investigate. We thought maybe the gas is something new— like new matter—that is made when the bath bomb is combined with water. We designed an investigation to collect evidence that would support or refute this claim. Now, carry out the investigation. Use Tuva to record your data, explore it, and gather evidence to construct a claim about where the bubbles are coming from. Click Next to get started.
Topics and standards: Physical Science, Life Science, MS-PS1-2, MS-LS1-8, Grade 7, MS-PS1-1, MS-PS1-5, OpenSciEd, 3.1.6-8.H, 3.2.6-8.A, 3.2.6-8.D, 3.2.6-8.E