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Plastics 5 th Grade STEM

Dive into the world of plastics through a 5th-grade STEM curriculum designed to enhance understanding of chemical and physical changes in matter. Students will evaluate evidence of physical changes, identify physical properties, and compare substances before and after changes. This curriculum incorporates math by teaching equivalent fractions in practical applications. Through engaging questions and challenges, students will explore how plastics have transformed technology, the roles of various engineers, and conduct tests to assess physical properties. The exciting final challenge? Build a table using Legos, simulating real-world engineering!

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Plastics 5 th Grade STEM

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  1. Plastics5th Grade STEM Building Block of the Modern World

  2. Science Standard STANDARD I: Students will understand that chemical and physical changes occur in matter. Objective 2: Evaluate evidence that indicates a physical change has occurred. • Identify the physical properties of matter (e.g., hard, soft, solid, liquid, gas). • Compare changes in substances that indicate a physical change has occurred. • Describe the appearance of a substance before and after a physical change.

  3. Mathematics Standard 5.NF.1 Use equivalent fractions as a strategy to add and subtract fractions. Add and subtract fractions with unlike denominators (including mixed numbers) by replacing given fractions with equivalent fractions in such a way as to produce an equivalent sum or difference of fractions with like denominators. For example, 2/3 + 5/4 = 8/12 + 15/12 = 23/12. (In general, a/b + c/d = (ad + bc)/bd.)

  4. Technology and Engineering Technology Ruler and/or calculator, iPad Engineering: Chemical Engineering Materials Engineering Manufacturing Engineering

  5. Brain Drain What do you know about plastics? Google Group What is a physical property? Which of these are physical properties?

  6. How have plastics changed our world? For example, computing devices: Abacus first Apple computer modern computer What property of plastics makes them so adaptable for creating modern “boxes” for computers?

  7. What kinds of engineers create products made from plastics? Chemical engineer Materials engineer Manufacturing engineer

  8. Are all plastics alike?

  9. How might these plastics be the same? Different?

  10. What tests can you design to discover the physical properties of plastics?

  11. Professional tests Stretchibility Plastic Bag Testing Compression Plastic Bottle Burst test Flame Test

  12. How are plastics formed in to products? Injection molding 3 D Printing

  13. We do not have all that cool equipment but we can build something out of plastic. Our plastic “pellets” will be Legos. Here is the challenge: Build a table out of legos. It must have a surface area of

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