Keeping Things Warm or Cool

Active learning works here because students need to feel temperature differences to trust the science. When they test materials with their own hands, the abstract idea of heat transfer becomes concrete and memorable. This hands-on approach also builds problem-solving skills as they design real solutions to keep things warm or cool.

• Kindergarten
• Science
• 4 activities
• 15 min–35 min

Learning Objectives

1. Compare the effectiveness of different materials in insulating against heat transfer from sunlight.
2. Design a simple shade structure to keep a surface cooler.
3. Explain why light-colored clothing helps keep a person cooler in direct sunlight.
4. Identify materials that absorb sunlight and materials that reflect sunlight.

Inquiry Circle

⏱ 30 min·Pairs

Inquiry Circle: Cool Cover Test

Pairs receive four small identical containers and four covering materials: aluminum foil, black construction paper, white cloth, and no cover. They fill each with the same amount of room-temperature water, place them in a sunny window for 20 minutes, and compare which stayed coolest and which warmed most.

Prepare & details

Design a method to keep a surface cool when the sun is shining brightly.

Facilitation Tip: During the Cool Cover Test, circulate with a digital thermometer to show temperature changes instantly, so students see real-time data.

Setup: Groups at tables with access to source materials

Materials: Source material collection, Inquiry cycle worksheet, Question generation protocol, Findings presentation template

• Analyze
• Evaluate
• Create
• Self-Management
• Self-Awareness

Simulation Game

⏱ 35 min·Small Groups

Simulation Game: Keep the Ice Cube Alive

Small groups receive an ice cube and a bag of materials: foil, cotton balls, plastic wrap, and construction paper. They have 15 minutes to build a cold keeper for the ice cube. Groups place all cubes on the table and observe which one melts last over the next 20 minutes, then explain why their material choice worked or did not.

Prepare & details

Compare materials that keep things warm versus materials that keep things cool.

Facilitation Tip: For the Keep the Ice Cube Alive simulation, provide small containers so students can compare ice melt rates in different environments.

Setup: Flexible space for group stations

Materials: Role cards with goals/resources, Game currency or tokens, Round tracker

• Apply
• Analyze
• Evaluate
• Create
• Social Awareness
• Decision-Making

Think-Pair-Share

⏱ 15 min·Pairs

Think-Pair-Share: Light Colors and Dark Colors

Show a photo of two cars parked in the sun, one white and one black. Ask students which would be hotter inside and why. Pairs share their reasoning before the class tests a version of this with two pieces of construction paper placed in the sun.

Prepare & details

Justify why wearing light-colored clothes helps us stay cool in the sun.

Facilitation Tip: In the Think-Pair-Share, give each pair one set of colored paper so they physically hold and compare the materials.

Setup: Standard classroom seating; students turn to a neighbor

Materials: Discussion prompt (projected or printed), Optional: recording sheet for pairs

• Understand
• Apply
• Analyze
• Self-Awareness
• Relationship Skills

Gallery Walk

⏱ 20 min·Pairs

Gallery Walk: Design Review

After each group completes a shade or insulation design, students post a drawing of their design labeled with the materials used. The class walks to view each design and places a sticky note on ones where they can explain why a specific material was a good choice for blocking or holding heat.

Prepare & details

Design a method to keep a surface cool when the sun is shining brightly.

Facilitation Tip: During the Gallery Walk, ask students to leave sticky notes with one question or suggestion for each design they observe.

Setup: Wall space or tables arranged around room perimeter

Materials: Large paper/poster boards, Markers, Sticky notes for feedback

• Understand
• Apply
• Analyze
• Create
• Relationship Skills
• Social Awareness

Teaching This Topic

Start by connecting to students' experiences with hot playgrounds or melting ice cream. Teach them to use precise language like 'absorb,' 'reflect,' and 'insulate' from the first activity onward. Avoid explaining too much upfront; let their investigations drive understanding. Research shows young learners grasp heat transfer best when they manipulate materials and discuss outcomes with peers.

What to Expect

Successful learning looks like students using scientific terms correctly after testing, adjusting their designs based on results, and explaining why certain materials work better than others. They should connect their observations to everyday experiences, like choosing clothing or shading a lunchbox.

Watch Out for These Misconceptions

Common Misconception

During the Think-Pair-Share activity, watch for students who assume dark colors are always better and cannot explain why.

What to Teach Instead

Ask them to hold the dark and light papers in the sun for one minute, then feel both. Guide them to notice the dark paper feels warmer and ask, 'Is this helpful for keeping something cool?' Have them revise their thinking using the terms 'absorb' and 'reflect'.

Common Misconception

During the Cool Cover Test activity, watch for students who think any cover will keep ice cold.

What to Teach Instead

After the uncovered ice melts faster than the covered ice, ask students to compare the black paper cover to their predictions. Have them explain why the black cover made the ice melt faster, pointing to the material's heat-absorbing property.

Assessment Ideas

Exit Ticket

After the Gallery Walk, give students a picture of a lunchbox in the sun. Ask them to draw one material to cover it and write one sentence explaining why it works using the terms 'absorb' or 'reflect'.

Quick Check

During the Cool Cover Test, hold up dark fabric and aluminum foil. Ask students to predict which will get hotter in the sun and explain their reasoning using 'absorb' or 'reflect'.

Discussion Prompt

After the Think-Pair-Share activity, ask students, 'Imagine you are at the park on a sunny day. What color shirt would you wear to stay cool? Use the word 'reflect' in your answer.' Have them share with a partner before discussing as a class.

Extensions & Scaffolding

• Challenge: Ask students to design a container that keeps a drink cold for 30 minutes using only classroom materials.
• Scaffolding: Provide students with a word bank (e.g., 'absorb,' 'reflect,' 'dark,' 'light') to use in their explanations.
• Deeper exploration: Introduce the idea of insulation by testing bubble wrap, cotton, and foam alongside the other materials.

Key Vocabulary

absorb	To take in sunlight or heat without reflecting it.
reflect	To bounce sunlight or heat off a surface.
insulate	To prevent heat from passing through a material.
temperature	How hot or cold something is.