Tuesday, October 2, 2007

"Producers and Energy"

Bellwork:
1) We need __________ to get energy.
2) Food Calories measure _________.
3) Plants make ______________.

Discuss:
- How do you get the building materials your body needs to grow, change, and repair damage? How do you get the energy you need to do everything?
==> Building materials and energy come from digested food.
- Plants don't eat food, so how do they get building materials and energy?
==> Plants produce their own food.
- Question of the day: What do plants make the food out of? What materials do they need to produce food?

Paired work:
- Complete the worksheet ("Food-Producer Experiment") on page 55 in workbook to answer the question of the day. Followed by whole class discussion of results.

Lecture:
- Photosynthesis: The process plants use to make their own food using light, water, and carbon dioxide. Plants also give off oxygen that animals can breath in.
Carbon dioxide + water + light ==> Food (glucose) + oxygen
- Plant food is carbohydrates, aka glucose aka sugar aka starch
- Glucose contains building blocks for new tissues AND energy.

Exit Slip: on page 54 of your workbook with today's date (10-2-07)
3 things you learned
2 things you still wonder about
1 thing that surprised you

Homework: Read "Were Does Food Come From?" and answer attached questions.