unit 2: structures and materials lesson 11: looking at...
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Lesson 8Recyclable Renewable Reusable
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Saskatchewan Science 3SMART Notebook™ Lessons
Unit 2: Structures and Materials
Lesson 11: Looking at Materials
© 2012 Pearson Canada Inc.
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• Nature is a master builder! A wasp nest, for example, is strong, light, waterproof, and easy to make larger. It is made of materials that are easy to find and use again.• Humanbuilt structures can be made from natural or human made materials.• Some materials, like aluminum, are recyclable. This means they can be made into new products. • Other materials, like wood, can be replaced by new growth. • Some materials, like plastic, are reusable. They can be used more than once.
Looking at Materials11Lesson
Pearson Saskatchewan Science 3: Unit 2
© 2012 Pearson Canada Inc.
The aluminum in this pop can can be recycled and made
into new products.
For Teachers
Goal: To find out what materials are recyclable, renewable, and reusableOutcome SM3.1: Investigate properties of materials and methods of joinery used in structures. Indicators:a. Identify problems to be solved related to the properties of materials in structures (e.g., What is the purpose of the structure? What materials are appropriate for constructing the structure? What are appropriate methods of joinery?).b. Examine the properties of materials used in structures (e.g., beaver lodge, bird nest, wasps’ nest, honeycomb, ant hill, tipi, house, marionette, circus float, umbrella, ladder, bridge, earthlodge, quinzhee, drink can, hockey puck, playground equipment, and toys).i. Examine the suitability of using recycled materials to construct structures (e.g., tires as highway surfacing, and reclaimed lumber or straw bales for houses).
To hear the bulleted text on this page read aloud, touch the Listen icon.
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Recyclable: can be made into new products
Renewable: can be replaced by new growth.
Reusable: can be used more than once
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Looking at Materials
Pearson Saskatchewan Science 3: Unit 2 Lesson 11
© 2012 Pearson Canada Inc.
The Magic Tunnel
Are the structures listed below made from reusable, recyclable, or renewable material?
Drag the labels through the magic tunnel to see if you are correct!
pop canrecyclable
ant hillrenewable
fleece jacket recyclable, reusable
wigwamrecyclable,renewable, reusable
wooden houserenewable, reusable
paper printed on one side reusable, recyclable, renewable
plastic waterbottle reusable, recyclable
For Teachers
Students decide whether each of the structures listed on the left is made from reusable, recyclable, or renewable materials. Once they have made their guess, they can drag the word through the magic tunnel and onto the yellow side to reveal the answer.
Students can review the terms reusable, recyclable, and renewable on page 71 of the student book.
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Looking at Materials
Pearson Saskatchewan Science 3: Unit 2 Lesson 11
© 2012 Pearson Canada Inc.
With a partner, brainstorm some structures that you have seen at home or at school. What materials are these structures made of? Are these materials recyclable, reusable, or renewable? Discuss these questions with your partner, and complete the table below. One example has been done for you.
Structure Made From Reusable Recyclable Renewable
water bottle plastic yes yes no
• your notebook• a pencil
For Teachers
This activity is based on the Work On It activity on page 71 of the student book.
Have students copy and complete the chart in their notebooks. Then, ask students to take turns adding information to the table on the interactive whiteboard.
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Looking at Materials
Pearson Saskatchewan Science 3: Unit 2 Lesson 11
© 2012 Pearson Canada Inc.
Structures can be made from natural materials, humanmade materials,or a combination of both. Use the Venn diagram to compare and contrastthe wigwam and brick house below.
Wigwam House
made from all natural materials
constructed with little waste
materials are wellsuited for the structure
constructed with more waste
uses some nonrenewable materials
uses some humanmade materials
For Teachers
Invite students to drag the descriptions onto the Venn diagram. Answers are shown on the following page.
Invite discussion and debate if students disagree with the answers as shown.
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Looking at Materials
Pearson Saskatchewan Science 3: Unit 2 Lesson 11
© 2012 Pearson Canada Inc.
Which structure would you rather live in? Why? Discuss your answerwith a partner.
Wigwam House
constructed with little waste
materials are wellsuited for the structure
constructed with more waste
uses some nonrenewable materials
uses some humanmade materials
made from all natural materials
For Teachers
Discuss:Invite discussion and debate if students disagree with the answers as shown.
Have students discuss the question with a partner.Answers:Students might prefer the wigwam for its environmental sustainability, familiarity, tradition,novelty, or similarity to camping. Theymight prefer the brick house for its size, comfort,familiarity, or durability.
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Looking at Materials
Pearson Saskatchewan Science 3: Unit 2 Lesson 11
© 2012 Pearson Canada Inc.
What do you think is most important part of the responsible use of materials? Raise your hand to vote for Reduce, Reuse, or Recycle.Tally the votes in the table below.
Reduce Reuse Recycle
AnswerReduce is the most important of the three Rs. When we reduce the amount of material we consume, we create less waste.
For Teachers Ask students to vote by show of hands to see what they
think is the most responsible "R". You or a student can tally votes on the interactive whiteboard.
To reveal the answer, pull the grey screen shade down.
AnswerThe best choice is to reduce. Reducing the amount of materials we consume will prevent waste from being generated.
Students may think recycling is the most important part of the responsible use of materials. Unfortunately, recycling materials takes energy as well as other resources. This makes it the least valuable of Reduce, Reuse, Recycle.
If you need to reset the screen shade, touch the Show/Hide Screen Shade button, then drag the screen shade to the bottom of the table.
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