OpenSciEd 7.1, Lesson 9: Boiling Water Investigation
Task
Use this Tuva Investigation with the Grade 7 OpenSciEd curriculum during Unit 7.1, Lesson 9. Tuva has digitized the student procedure, density calculations of clear liquids handout, and flipchart graph utilized in Parts 3 and 4 and the Evaluating and Improving Alternate Arguments handout from Part 6. This is not a standalone lesson. Use it in tandem with the OpenSciEd Teacher Edition. Where This Investigation Fits into the Storyline In the previous lesson, students investigated the phenomenon of water changing when heated and gathered evidence about what happens during heating. During this lesson, students test the properties of the gas produced by heating water, collect mass and volume data for clear liquids, and use density to construct an argument about whether heating water produces a new substance. When to Use Tuva Day One Before opening Tuva, complete Part 1, the Navigation Routine, and Part 2, Carrying Out Property Tests on the Gas From Heated Water. Use pages 8–11 of the Teacher Edition. Part 3, Problematizing Planning and Carrying Out a New Investigation is broken into multiple parts, some of which will be done in Tuva. The first two sub-sections, problematizing, reintroducing density as a property, and planning should be done offline using pages 11–13 of the Teacher Edition and slides C–E. When you get to the portion of the lesson plan that tells you to distribute the Density Calculations of Clear Liquids handout, have students log onto Tuva. Students will record their predictions and share them aloud with the class. Assign groups to specific liquids. Then, have students follow the procedure on Tuva and record their data in the Tuva table. Day Two At the start of Day Two, have students enter the mass and volume data from their classmates into the group data table on Tuva's Step 3. Currently, you will see sample data in the table. This may be used as a fallback, but we recommend using the data your class collected, as it will be more meaningful to them. Tuva Steps 3–7 guide students through calculating density manually, learning to use Tuva's digital tools to calculate density for them, viewing the data graphically, and thinking about proportional relationships. Pages 14–17 of the OpenSciEd Teacher Edition (Part 5) provide guidance on facilitating these same tasks using a manually created graph, but you will still want to refer to the advice and talking points provided. This portion of the lesson relies heavily on grade-level mathematics, particularly proportional relationships. Consider coordinating with your school's mathematics teachers. Tuva Step 8 corresponds with the Part 5 of the Teacher Edition, Collecting Data on the Density of the Clear Liquid. You calculate and share the mystery liquid's density, and students add the data to their table. Tuva Step 9 provides an extension on what is offered in the Teacher Edition, giving students an opportunity to use another graph type to help them categorize the liquids by property. (Note: Because Tuva is already set to calculate density by this step, we recommend gathering formative data from earlier in the lesson. Teachers could use the second density calculation in Tuva Step 5 as a formative assessment instead.) Have students complete Part 6, Arguing From Evidence, right on Tuva. We have digitized the Improving Alternate Arguments handout. Close Tuva and finish your day with the Navigation Routine described on page 21 of the Teacher Edition.
In the beginning of this lesson, your teacher boiled water and a clear liquid formed on the inside of the second flask. You wondered whether the new substance was water or some other clear liquid and came up with a plan for identifying the new liquid using the property density. Now, you will collect mass and volume data for three clear liquids. You'll record your data in Tuva, calculate density of your assigned liquid, and use Tuva to visually explore the data from the three different liquids. Click Next to get started.
Topics and standards: Physical 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