I Silent Start PICK UP employee workbook and reading. Turn to page 2 and begin. Lesson 1

Read the welcome letter Read the ChemMatters article: Plastics Go Green You may mark the text and look for text features

List a few key terms you think you should know from the reading: How is bioplastic different than most commercial plastics? Curious questions?

Engineering Design

Elif Bilgin

Bioplastics Engineering Design

I Silent Start Take out your workbook. Is page #3 and #5 complete? Earned your stamp? Look ahead at what’s next! Lesson 2

Petroleum Polymers and Plastics Engineers need good science backgrounds to advance their ideas. You’ll need a bit of review. Your task is to investigate types of polymers at several stations. Use the background brief boxes for each polymer to record your observations and learning about each polymer.

I Silent Start Take out your workbook. Reflect on your Polymer hunt from yesterday and complete page 11. Lesson 3

What are polymers?

Engineering Design Criteria and Constraints We need you to pick a type of petroleum plastic and create a bio-based polymer with similar properties with less environmental impact. For testing purposes, you will need to make a thin film with a minimum size of about 10 cm x 10 cm.

Using the base formulations and a list of base starches and additives, on the next page, brainstorm a formulation to make and then test, that will meet your criteria. Your criteria for a bio-plastic substitute for # _________ is: ________________________________________________

I Silent Start Take out your workbook. Prepare your group to get started SAFELY And CAREFULLY Binders off the table! Lesson 4

Tips and tricks Use the glass stirring rod while mixing and heating Use the plastic scraper to scrap out your biopolymer into the mold. If you have enough material for more than one mold MAKE ANOTHER.

I Silent Start Take out workbook and your planner DATA DAY is NOW ________ Polymer Presentations are _____

I Silent Start 1.Take out workbook 2.Review the quantitative testing procedures 3.Collect your FIRST biopolymer only

Quantitative Testing Procedures Review: Procedures Safety Vocabulary

Let the testing begin!

While you work think about… we will share! How are you an engineer? What parts of the testing are the most difficult, surprising, straightforward? What ideas do you have about what to do next?

I Silent Start Take out your workbook. 1. Pick up your SECOND bioplastic sample 2.Begin a QUALITATIVE ASSESSMENT 3. Begin to cut specimens with the templates for QUANTITATIVE testing

I Silent Start Take out your workbook. Testing is done?! Check your work. No naked numbers. Is your data reliable? What are some possible sources of error? Today we will prepare for presentations!

I Silent Start Welcome to the PPP presentation day! Take a few silent minutes to read through your script!

Feedback What would you do to improve the learning and activities in this unit for next year’s sixth graders? What have you learned about the engineering process?