Materials and Their Uses

Active learning helps students connect abstract ideas about resources to real-world practices they can see and touch. When children physically sort, build, and audit materials, they move from hearing facts to experiencing why reducing waste matters.

• Grade 1
• Science
• 3 activities
• 15 min–50 min

Learning Objectives

1. Classify common objects based on the properties of the materials they are made from.
2. Explain why specific materials are chosen for particular everyday objects, referencing material properties.
3. Compare and contrast the suitability of different materials for a given purpose, such as a raincoat or a window.
4. Design a new use for a common household material, demonstrating an understanding of its properties.

Stations Rotation

⏱ 30 min·Small Groups

Stations Rotation: Sort the Scraps

Set up stations with various 'waste' items. Students work in groups to decide if an item should be reduced (not used at all), reused (used again for a new purpose), or recycled (processed into something new).

Prepare & details

Analyze why a window is made of glass and not wood.

Facilitation Tip: During Station Rotation: Sort the Scraps, circulate and ask students to explain their sorting choices at each station.

Setup: Tables/desks arranged in 4-6 distinct stations around room

Materials: Station instruction cards, Different materials per station, Rotation timer

• Remember
• Understand
• Apply
• Analyze
• Self-Management
• Relationship Skills

Inquiry Circle

⏱ 50 min·Small Groups

Inquiry Circle: The Upcycle Challenge

Give each group a 'mystery' piece of trash (e.g., an empty milk carton). They must work together to design and build a useful tool, like a bird feeder or a pencil holder, using only that item and tape.

Prepare & details

Justify why a spoon is usually made of metal or plastic.

Facilitation Tip: In The Upcycle Challenge, remind groups to justify material choices using properties rather than just appearance.

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

Think-Pair-Share

⏱ 15 min·Pairs

Think-Pair-Share: The Lunchbox Audit

Students look at their own lunch containers (or a sample lunch). They identify one thing that could be replaced with a reusable option and explain to a partner how that helps the Earth.

Prepare & details

Predict what would happen if a raincoat was made from paper.

Facilitation Tip: For The Lunchbox Audit, model how to categorize items as reusable, recyclable, or waste before students begin their own audits.

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

Teaching This Topic

Teach this topic by grounding discussions in objects students use daily, then scaling up to systems-level thinking about waste. Avoid presenting recycling as the 'hero solution,' since research shows reducing and reusing save more energy. Use Indigenous perspectives like the Seven Generations concept to frame stewardship as a long-term responsibility rather than a short-term fix.

What to Expect

Students will recognize that everyday objects come from limited resources and that their choices affect the environment. They will explain why some materials are better suited for certain uses based on properties like durability, absorbency, or flexibility.

Watch Out for These Misconceptions

Common Misconception

During Station Rotation: Sort the Scraps, watch for students who immediately place items in the 'recycle' bin without considering reduce or reuse options.

What to Teach Instead

Pause the activity and ask each group to explain why they placed an item in recycle rather than reusing it first. Guide them to discuss whether the item could serve another purpose before recycling.

Common Misconception

During The Upcycle Challenge, listen for teams that choose materials based only on aesthetics instead of properties like water resistance or strength.

What to Teach Instead

Hand each team a water spray bottle and ask them to test their material choices. Have them reflect on why certain materials failed and how they might adjust their design.

Assessment Ideas

Quick Check

After Station Rotation: Sort the Scraps, provide students with five new objects and ask them to identify the main material and one property that makes it suitable for its use.

Exit Ticket

During The Upcycle Challenge, collect each group's written justification for their material choices and assess whether they connect properties to the object's function.

Discussion Prompt

After The Lunchbox Audit, facilitate a class discussion where students share their findings and explain why they categorized certain items as waste, focusing on the concept of disposability versus reusability.

Extensions & Scaffolding

• Challenge: Invite students to design a product from only reused materials and present it to the class.
• Scaffolding: Provide a word bank of material properties for students to reference during sorting or upcycling.
• Deeper exploration: Compare the energy required to make a new aluminum can versus recycling one, using simple calculations based on provided data.

Key Vocabulary

Property	A characteristic of a material, such as hardness, flexibility, or absorbency, that helps describe it.
Absorbent	A material that can soak up liquids, like a sponge or paper towel.
Flexible	A material that can bend easily without breaking, like rubber or fabric.
Rigid	A material that is stiff and does not bend easily, like wood or hard plastic.
Transparent	A material that allows light to pass through it, so you can see objects on the other side, like clear glass.