2-PS1-4 · Science
Matter and Its Interactions
Your child should know that heating and cooling can change materials — and sometimes you can undo the change (ice melting) but sometimes you can't (cooking an egg).
What the standard actually says
Construct an argument with evidence that some changes caused by heating or cooling can be reversed and some cannot.
Domain: Matter and Its Interactions — Exploring how different materials have different properties and how heating/cooling can change them.
Next Generation Science Standards*Examples and home activities
- Melt ice cubes, then refreeze. 'Can we get the ice back? Yes! That's reversible!'
- Cook an egg together. 'Can we un-cook it? No! That's irreversible.'
- Make a chart of reversible vs. irreversible changes you find in daily life.
Printable practice worksheet — 2-PS1-4
Name: ______________________ Date: ____________ Standard: 2-PS1-4
1. What did you observe? Draw it.
2. Write one question you want to investigate.
3. What do you predict will happen? Why?
4. Record your data in a simple chart.
5. What did you find out?
6. What would you change if you tried again?
secondgrade.com · Science · 2-PS1-4
Lessons that teach this
8 lessons list 2-PS1-4.
Week 3
- Monday · Science — Students will observe that heating causes some solids to melt and record how fast ice melts in different places (2-PS1-4).
- Wednesday · Science — Students will observe that cooling can turn a liquid back into a solid and that some materials melt at lower temperatures than others (2-PS1-4).
- Friday · Science — Students will conclude that heating and cooling change matter between solid and liquid and make frozen paint art to show it (2-PS1-4).
Week 4
- Monday · Science — Students will sort changes to matter into those that can be reversed and those that cannot (2-PS1-4).
- Wednesday · Science — Students will observe changes caused by mixing and cooking and provide evidence that these changes cannot be reversed (2-PS1-4).
- Friday · Science — Students will conclude that some changes caused by heating, cooling or mixing can be reversed and others cannot, and make no-bake play dough to see a change they cause on purpose (2-PS1-4).
Week 36
- Monday · Science — Students will review the year's science units by sorting portfolio work into topics and choosing their best piece from each (2-PS1-1, 2-LS2-1, 2-LS4-1, 2-ESS2-1, K-2-ETS1-1).
- Friday · Science — Students will present their science portfolio, reflect on their growth as a scientist, and receive awards tied to real skills demonstrated during the year (all Grade 2 science standards reviewed).
Where it lives in our curriculum
This standard is taught in these weeks:
Related standards in Matter and Its Interactions
Your child should be able to observe, describe, and sort materials by properties like color, texture, hardness, flexibility, and whether they absorb water.
2-PS1-2Your child should test materials to figure out which one works best for a job — like 'which material makes the best umbrella?'
2-PS1-3Your child should understand that things can be taken apart and rebuilt into something new — the pieces don't change, just the arrangement.