Welcome Back!

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Open your binder to the table of contents

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Have a sharpened pencil in your hand

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Get ready to learn!

“ Redesign” p. 104 March 10, 2011 Objective: You will be able to improve a solution design using the technological design process.

Do Now: How have cell phones changed in the last 20 years? Why haven’t they always looked like they do now?

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Engineers Remember, engineers design solutions to problems.

But they don’t stop at the first design, they keep improving!

Technological Design Loop

Desalinization Reflection, p. 104 Not everyone’s design was successful in collecting water.

Work with your group to complete the reflection worksheet.

Successful Designs

What do they all have in common?

No plastic wrap

Plastic Wrap We will not use saran wrap any more.

Why do you think that is?

It could explode! Why?

Aluminum Can Hot Plate

Visualizing the particles Hot

Visualizing the particles Hot

Salty Water Cleanup Redesign

Work with your group to redesign your desalination plant so it makes more clean water Label evaporation, condensation, precipitation, and collection on your diagram.

You may NOT build your design until I have checked your plans!

The group with the most clean water collect wins a prize!

If you finish early… Make a vocabulary poster Study flashcards

Exit Ticket, 3/10

1.

How is your work today in class like the work of an engineer?

2. How have you improved on your earlier design?