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Microworld Chaining: Scaffolding Holistic Meaning Across Lessons in High School Biology

Microworld Chaining: Scaffolding Holistic Meaning Across Lessons in High School Biology. Geoffrey W Boyle EDIT 732. Hello Student! You will explore a series of microworlds that will help you to understand how chemistry, DNA, and a bird’s lunch are related.

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Microworld Chaining: Scaffolding Holistic Meaning Across Lessons in High School Biology

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  1. Microworld Chaining: Scaffolding Holistic Meaning Across Lessons in High School Biology Geoffrey W Boyle EDIT 732

  2. Hello Student! You will explore a series of microworlds that will help you to understand how chemistry, DNA, and a bird’s lunch are related. • You will start at a very small level and work your way up to lunch.

  3. Domain: Electron bonding • Click on letters to make atoms appear

  4. Domain: Electron bonding • Basic bonding is limit of this Microworld

  5. Domain: Electron bonding Two representations available

  6. Domain: Electron bonding In our bodies • Expanded to include building of DNA bits?

  7. Electron bonding in DNA • The electron reactions you have just explored occur inside all living things. • In your journal: • Take a few minutes to explain in your journal the rules the atoms followed when bonding. Write as if you were explaining to a programmer how to write this program from scratch.

  8. Bonding in DNA: You are the enzyme • In this next simulation, you will play the role of an enzyme in order to help build two grasshopper proteins. • Depending on the protein, the grasshoppers you grow may live or die.

  9. Bonding in DNA: You are the enzyme 1)Choose a protein to build; 2)Match base pairs as the helix entwines; 3) Keep up!

  10. Bonding in DNA: You are the enzyme • In your journal: • Explain the rules that the bases follow you paired them as the double helix entwined itself. • What might interfere when two given bases need to bond? Consider what you know about electrons and chemical bonds.

  11. Life or Death for Grasshoppers: Did you build the right protein? • Grasshoppers exoskeletons are colored by pigments, which are just proteins. • DNA coding, the base pairing you just did, determines what color those pigments are. • Now grow grasshoppers in the incubator and release them into the jungle!

  12. Exoskeleton Allele

  13. Life or Death for Grasshoppers: Did you build the right protein? • In your journal: • Think about how the proteins you made affected the color of the grasshoppers. • Speculate on other traits of grasshoppers that might help them avoid predators or might attract them. • Do you think there are ways the bird might adapt to catch grasshoppers with new traits?

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