1. Food Energy Module 3: 7 th grade

2. March 24: What is ‘Accountable Talk’? What is Accountable Talk? Why do you think it is called “Accountable”? What does it look like/ sound like?

3. Accountable Talk Game Rules Each group member gets a colored marble or bead. The group gets one bucket. Have a conversation on the given topic. It is a discussion, using Accountable Talk. Place your marble/bead into the bucket each time you make a contribution to the discussion, including responses to others as well as new points.

4. Discuss our game How many marbles/ beads of each color do you see in your bucket? What does that tell us? Did you use Accountable Talk? What are 2 things you can do better to employ Accountable talk?

5. Discuss food energy and plant food energy

6. March 25: Plants are Producers… Plants don’t eat food. How do plants get the building materials they need to grow, change, repair damage, and replace parts, and the energy they need to do the things they do? What do plants make their food out of?

7. Food Producers Experiment Read over Purpose & Procedure together Write our your own personal hypothesis Then, flip over paper to look at data Calculate Plant Data Mass change: what does this number represent? Analyze the data to determine results Write our your personal conclusions: was your hypothesis correct? What did you learn?

8. Class Discussion of Food Producer Lab Remember Accountable Talk! Review purpose and procedure: was this truly an ‘experiment’? How do you know? Look at Data. Why use a table for data? What does Plant Mass change numbers represent? What were your hypotheses? Were they correct? So, how does soil fit in? What do you think was the purpose of this lesson? Did we achieve it?

9. President Obama’s news conference 3/24 “Do you think scientific consensus is enough to tell us what we should or shouldn’t do?” What is ‘scientific consensus’ and how is it formed? What do you think the President said in response? What would you say?

10. March 26: Review Plant Energy What did we learn in yesterday’s lesson about what plants need to produce their own food? By what process do they make their own food from these environmental factors?

11. Photosynthesis Photo= light + Synthesis= to put together Photosynthesis means that in the presence of light, plants put carbon dioxide and water together to make food (called carbohydrate) Copy Equation for Reaction: 6CO 2 + 6H 2 O + light C 6 H 12 O 6 +6O 2

12. Linking Food Energy to Trophic Levels and Food Webs Read Pages 17-21 in books Answer worksheet in groups Pay special attention to diagram on top of page 19 Quiz tomorrow on food webs and trophic levels (we will study together in class tomorrow to prepare before quiz)

13. March 27: Quickwrite What are the trophic levels in a food web? The biomass of which trophic level is the most in the entire food web?

14. THE TROPHIC PYRAMID, either biomass or energy based, can tell you a lot about that ecosystem. A trophic pyramid of a stable, healthy ecosystem will look something like this:

15. Practice Constructing Food Webs Your Quiz is exactly like this practice, so pay attention Each group needs to create one web to share with the class You have only 10 minutes to work in groups

16. Quickwrite: March 30 How do you get the energy you need to move and do all the other things you need to do? How is food turned into energy in your body? What are calories in food? What kinds of food give you the most energy? Does sleep give you energy?

17. Calories Can calories be taken out of food, like taking raisins out of raisin bran? No, the calorie is a unit used to measure energy in food. It cannot be removed.

18. Carbohydrates Chemicals that have energy in bonds that hold the atoms together (biochemistry) When the body breaks down sugars into simpler chemicals, energy is released Includes starches and sugars

19. MAKE A DRAWING – no words How do YOU get energy? What do you do to get energy when you are tired?

20. Food Energy: wikipedia Food energy is the amount of energy in food that is available through digestion.energydigestion Like other forms of energy, food energy is expressed in calories or joules.caloriesjoules Only carbohydrates (including fiber), fats, proteins, organic acids, polyols, and ethanol contain food energy. All foods are made up of a combination of these five nutrients.carbohydratesfiberfatsproteins organic acidspolyolsethanol Everything else in food is non-caloric, including (but not limited to) water, vitamins, minerals, antioxidants, caffeine, spices and natural flavors.watervitaminsmineralsantioxidants caffeinespicesflavors

21. Using Food Energy The conversion efficiency of food energy into physical power depends on the form of energy source (type of food) and on the type of physical energy usage (e.g. which muscles are used, whether the muscle is used aerobically or anaerobically). In general, the efficiency of muscles is rather low, and roughly speaking, only about 15% of the food energy is actually converted into mechanical energy.poweraerobicallyanaerobically

22. March 31: Quickwrite How do Vampires get their energy? How do Vampires lose their energy?

23. Bram Stoker's Dracula "His eyebrows were very massive, almost meeting over the nose, and with bushy hair that seemed to curl in its own profusion. The mouth... was fixed and rather cruel-looking, with peculiarly sharp white teeth; these protruded over the lips, whose remarkable ruddiness showed astonishing vitality in a man of his years... The general effect was one of extraordinary pallor."

24. Porphyria cutanea tarda (PCT) The bloodthirsty Count's physical features could have been caused, say some researchers, by a rare disorder called porphyria cutanea tarda (PCT). The disease is the most common form of a group of inherited disorders that result in abnormal production of pigments that are essential components of proteins such as hemoglobin, the oxygen-carrying part of red blood cells. porphyria cutanea tardahemoglobin

25. PCT According to the American Porphyria Foundation, PCT primarily causes skins problems such as blisters that appear on sun-exposed areas of the body such as the hands and face. Even after minor trauma like a cut, the skin in these areas can peel or blister. In addition, people with PCT may also have darkening and thickening of the skin, as well as increased hair growth. In another, extremely rare form of the disorder called congenital erythropoietic porphyria, the teeth can be stained a reddish brown due to the buildup of pigments.Porphyriablisters

26. PCT Continued… The symptoms of PCT and other forms of the disease can be alleviated by avoiding sunlight (direct exposure to which can destroy a vampire). And because certain forms of the disease involve a deficiency in red blood cells, it is sometimes treated with repeated blood transfusions.

27. March 31, 1989- March 31, 2009

28. Is it true that “dirt don’t hurt”? 1) What kind of soil do you think this is? 2) How many calories are in one serving size of each ingredient of the dirt cake? Is that a lot or a little? Compare with peanut butter etc. 3) What does that mean? What’s a calorie? 4) What categories of nutritional facts are usually listed on a package?

29. How many calories did you eat? Oreo: 160 calories Vanilla pudding: 150 calories Gummy worms: 60 calories ___370_ calories total, compared to: Raisins: 130 calories Peanut butter: 190 calories Breakfast bars: 120 calories

30. April 2: Quickwrite How does energy move within an ecosystem?

31. Energy is the ability to do work. What are some kinds of work you do that require energy? Does intellectual work require energy?

32. Let’s Trace Energy through the Trophic Levels