1. Photosynthesis How Do Plants Make Food?

2. Questions To Think About What happens inside plants when the sun is shining or when it is raining? What happens inside plants when the sun is shining or when it is raining? How do plants in the desert survive? How do plants in the desert survive? How important are plants to our environment? How important are plants to our environment? What might happen if there were no plants? What might happen if there were no plants?

3. Discussion Of all the organisms in the world, green plants are the only ones that manufacture their own food. Of all the organisms in the world, green plants are the only ones that manufacture their own food. This process is called photosynthesis and begins when light strikes the plant’s leaves. This process is called photosynthesis and begins when light strikes the plant’s leaves. To visually see photosynthesis taking place, click here: http://earthguide.ucsd.edu/earthguide/diagrams/photo synthesis/photosynthesis.html To visually see photosynthesis taking place, click here: http://earthguide.ucsd.edu/earthguide/diagrams/photo synthesis/photosynthesis.html http://earthguide.ucsd.edu/earthguide/diagrams/photo synthesis/photosynthesis.html http://earthguide.ucsd.edu/earthguide/diagrams/photo synthesis/photosynthesis.html

4. Vocabulary Chlorophyll- A green substance which gives leaves their color. Chlorophyll absorbs energy from sunlight which plants use to make food. Chlorophyll- A green substance which gives leaves their color. Chlorophyll absorbs energy from sunlight which plants use to make food. Chloroplast- A plastid that contains chlorophyll and is the site where photosynthesis and starch formation occur. Chloroplast- A plastid that contains chlorophyll and is the site where photosynthesis and starch formation occur. Photosynthesis- The formation of carbohydrates in the chlorophyll-containing tissues of plants exposed to light. Photosynthesis- The formation of carbohydrates in the chlorophyll-containing tissues of plants exposed to light. Stomata- A very small hole in the surface of a leaf. Oxygen and carbon dioxide from the air enter through the stomata; oxygen, carbon dioxide and water vapor leave through the stomata. Stomata- A very small hole in the surface of a leaf. Oxygen and carbon dioxide from the air enter through the stomata; oxygen, carbon dioxide and water vapor leave through the stomata.

5. LIGHTS OUT ACTIVITY! Discover what happens if you change the patterns of a plant’s light source.

6. MATERIALS Small house plant Aluminum foil Scissors Paper clips.

7. Directions 1.) Get a houseplant from the back counter to use for the experiment. 2.) Cut out geometrical shapes (circle, square or triangle) out of the aluminum foil. 3.) Paperclip each shape on a different leaf.

8. Directions continued 4.) Place the houseplant near the window where it will get plenty of sunlight. 5.) After four days, we will remove the shapes from the leaves and make observations. 6.) Compare the areas on the leaf that were covered with the shape to other parts of the leaf.

9. DISCUSSION QUESTIONS 1.) What has happened to the leaves? 3) What is the best environment for a house plant. Why? 2.) Describe the effects that the lack of sunshine has on leaves.

10. Grade: 3rd Topic: Photosynthesis Intended use: To introduce hands-on activity Computer Resources Used: Powerpoint, Internet Standards: National Content Standard A: Science as Inquiry Michigan Curriculum Framework: Benchmark S1112.4: Compare and contrast food, energy and environmental needs of selected organisms

11. BACK UP PLAN SHOW STUDENTS HOW TO DO THE HANDS ON EXPERIMENT BY WAY OF DEMONSTRATION AND EXPLANATION WITHOUT THE PPT PRESENTATION

12. CREDITS http: //www.ktca.org/newtons/9/phytosy.html# photosynthesis http://earthguide.ucsd.edu/earthguide/diagrams/ photosynthesis/photosynthesis.html BY: Andrea Huver and Pam Lackowski