PS.2.1.3

Analyze and interpret data to compare the amount (volume and weight) of water left in an open container over time to the water left in a closed container.

District Recommended Resources for 2nd Grade Science

Changes

Activity Pack

How Much Can it Hold?
Solids and Liquids
Changes of Water

Changes Kit

Activity Packs are available for purchase. Full Kit rental options are also available. See your administrator.

Science Phenomena Resources

Other Phenomena Sites

Next Generation Science Standards YouTube Channel

Step 1: Lesson Standards & Learning Goals

NC K-12 Science Supporting Document Grade 2

*Teacher note - This standard is specific to evaporation. Most available resources address the water cycle. You may introduce the water cycle, but students at this grade level are NOT responsible for knowing the content, nor the vocabulary for the water cycle. They are only accountable for understanding that when heat is added, liquid water in an open container eventually changes to water vapor in the air. This standard also requires students to analyze and interpret data. See the Culminating Activity about data collection and graphing.

Dimension 1:

SEP: Analyze and Interpret Data:

Students will record information over time to compare changes in the weight and volume of water in both open and closed containers.

Dimension 2:

CCC: Cause and Effect

Dimension 3:

Disciplinary Core Ideas:

Different kinds of matter exist (e.g., wood, metal, water), and many of them can be either solid or liquid, depending on temperature. Objects or samples of a substance can be weighed, and their size can be described and measured. (Boundary: Volume is introduced only for liquid measure.) Heating or cooling a substance may cause changes that can be observed (A Framework for K-12 Science Education).

Sample Essential Questions

How does the measure of weight and volume of water change over time when left in an open container when compared to a closed container?
What causes the measure of weight and volume of water in an open container to change over time?
What type of data can be collected to compare the weight and volume of water in both an open and closed container over time?

Vocabulary

closed container
decrease
evaporation
open container
weight
volume

Students will be able to...

Carry out investigations to compare the weight and volume of water in an open container to the water in a closed container over time.
Asking Questions and Defining Problems - Students ask questions based on observations in order to find more information about how the weight and volume of the water in the open container compares to the weight and volume of the water in the closed container.
Planning and Carrying Out Investigations - With teacher guidance, students plan and conduct investigations to compare how the weight and volume of water in both an open and closed container change over time.

Students will know...

The water left in the open container slowly disappears (evaporates), losing weight and volume over time.
The water in a closed container remains the same; the weight and volume are not changed over time.

Step 2: Assessment

Formative Assessments

Writing Prompts

Journal Prompts:
- Describe what happened to the weight and volume of water in an open container when left in the classroom.
- Describe what happened to the weight and volume of water in a closed container when left in the classroom.
Narrative Writing: Imagine you are a water droplet sitting in an open container in the classroom. Write a story about what happens to you over a period of time.

Mini Projects and Investigations

Mini Boat Evaporation RaceFollow the EDP Process and Template. Link to come.
Sun and the Sponge
Matter Learning Stations
- See What's the Matter in Mr. Whisker's Room Activities

What’s the Matter in Mr. Whisker’s Room

Culminating Activity

Where Did the Water Go?

- Give each group of students two bottles of water. Have students mark the water level of their bottles.
- Keep a journal and note what is happening to the water in each container over time.
- Open one of the bottles and leave the other bottle closed. Ask students to predict: Do you think both bottles will have the same amount of water in them in one week? Why or Why not? Have student groups place their open containers in different areas of the classroom to compare the effects of those sitting on the window sill versus those sitting in shaded areas of the room.
- Have students mark the bottles daily using different color markers. Students will need to use a ruler to measure the amount of water and create a chart or graph to show the change over time.
- Written Summary: Where did the water go? Have students summarize the steps of the experiment and the results. They should use content vocabulary in their writing. (Teacher note: Students could use a cause-and-effect graphic organizer with this part of the activity.)