Photosynthesis Alicia A Palmer October 24 2010 Alicia

Photosynthesis Alicia A. Palmer October 24, 2010 Alicia Palmer 6 th Grade Photosynthesis

Science 6 th Grade Alicia Palmer 6 th Grade Photosynthesis

NCDPI Competency Goals and Objectives Alicia Palmer 6 th Grade Photosynthesis

Competency Goal 4: The learner will investigate the cycling of matter. 4. 03 Examine evidence that green plants make food. 1) Photosynthesis is a process carried on by green plants and other organisms containing chlorophyll. 2) 2)During photosynthesis, light energy is converted into stored energy which the plant, in turn, uses to carry out its life processes. Alicia Palmer 6 th Grade Photosynthesis

4. 04 Evaluate the significance of photosynthesis to other organisms: 1) The major source of atmospheric oxygen is photosynthesis. 2)Carbon dioxide is removed from the atmosphere and oxygen is released during photosynthesis. 3)Green plants are the producers of food that is used directly or indirectly by consumers. Alicia Palmer 6 th Grade Photosynthesis

Lesson Objectives Alicia Palmer 6 th Grade Photosynthesis

In this lesson: 1. The students will review the concept of photosynthesis. 2. The students will review information on photosynthesis using a variety of online websites. 3. Using their notes and information gathered from websites, the students will use Power. Point to create a graphic web demonstrating their understanding of photosynthesis. Alicia Palmer 6 th Grade Photosynthesis

National Educational Technology Standards for Students (NET-S) Alicia Palmer 6 th Grade Photosynthesis

1. Creativity and Innovation Students demonstrate creative thinking, construct knowledge, and develop innovative products and processes using technology. Students: a. apply existing knowledge to generate new ideas, products, or processes. Alicia Palmer 6 th Grade Photosynthesis

2. Communication and Collaboration Students use digital media and environments to communicate and work collaboratively, including at a distance, to support individual learning and contribute to the learning of others. Students: a. interact, collaborate, and publish with peers, experts, or others employing a variety of digital environments and media. Alicia Palmer 6 th Grade Photosynthesis

5. Digital Citizenship Students understand human, cultural, and societal issues related to technology and practice legal and ethical behavior. Students: b. exhibit a positive attitude toward using technology that supports collaboration, learning, and productivity. Alicia Palmer 6 th Grade Photosynthesis

Time 3– 4 50 minute class periods Alicia Palmer 6 th Grade Photosynthesis

Materials • • • Computers With Internet Access Power. Point Software Jump Drive For Each Group Pencil Science Journal Alicia Palmer 6 th Grade Photosynthesis

Web Resources • Real Trees 4 Kids • Biology 4 Kids • Photosynthesis from Academic Kids Alicia Palmer 6 th Grade Photosynthesis

Introduction • At the beginning of class, the teacher will review the process of photosynthesis. Show Power. Point slides, pictures, and diagrams of the process so students can visually see the explanations. • Ask questions and have them describe the process in their own words. Alicia Palmer 6 th Grade Photosynthesis

Introduction (continued) Introduction Questions: 1. What is the sun’s role in photosynthesis? 2. How do plants absorb carbon dioxide (CO 2) 3. What is chlorophyll and what does it do? Alicia Palmer 6 th Grade Photosynthesis

Introduction (continued) Have students to visit the following websites to view videos on photosynthesis : • PBS: Illuminating Photosynthesis • Video 1 on Photosynthesis • Video 2 on Photosynthesis Alicia Palmer 6 th Grade Photosynthesis

REVIEW Alicia Palmer 6 th Grade Photosynthesis

Understanding Photosynthesis What role does it play in nature’s life cycle? Ø All energy on earth comes from the sun. Ø We depend on plants, to provide this energy to us. Ø Photosynthesis is the connecting bridge between the sun and plants that provides all life with energy. Alicia Palmer 6 th Grade Photosynthesis

• We depend on: – Plants – Algae (underwater plants) – Cyanobacteria (photosynthetic bacteria) • To provide us with energy. • To provide us with oxygen. Alicia Palmer 6 th Grade Photosynthesis

What is photosynthesis? • A process plants use to make their own food. • Plants’ leaves contain a chemical called chlorophyll. • The chlorophyll (green color) makes photosynthesis possible. Alicia Palmer 6 th Grade Photosynthesis

Alicia Palmer 6 th Grade Photosynthesis

• Carbon dioxide and water are taken in by plants • Plants absorb light energy and convert it to a usable form. – ATP • Energy is used to “fix” carbon dioxide into sugar molecules – Chemical energy • Sugar is converted to starch and stored for use by the plant, and by animals when they eat plants. Alicia Palmer 6 th Grade Photosynthesis

The chlorophyll absorbs the sunlight. Alicia Palmer 6 th Grade Photosynthesis

What happens in a typical plant leaf? Alicia Palmer 6 th Grade Photosynthesis

• Chloroplasts: > Have 2 membranes. The inner membrane is called the thylakoid. ~ The thylakoid is folded and looks like stacks of coins called granum (grana singular). ~ Chlorophyll molecules are embedded in the thylakoid membrane > The stroma is the space surrounding the granum. Alicia Palmer 6 th Grade Photosynthesis

The sunlight is combined with water, Carbon Dioxide and nutrients from the soil. CO 2 Alicia Palmer 6 th Grade Photosynthesis

The chlorophyll processes the ingredients and makes sugar (plant food) and oxygen. Sugar + Air O 2 Alicia Palmer 6 th Grade Photosynthesis

Plants and animals need each other to survive. Alicia Palmer 6 th Grade Photosynthesis

Animals including humans make the CO 2 (carbon dioxide) plants need. They (the plants) make the O 2 (oxygen) and food we need. O 2 CO 2 Alicia Palmer 6 th Grade Photosynthesis

PROCEDURES Alicia Palmer 6 th Grade Photosynthesis

• Explain to the class that they will be completing a graphic web displaying their understanding of photosynthesis. Alicia Palmer 6 th Grade Photosynthesis

• Pair students in groups of 2 -3 and show them a very simple sample of what the project will entail. Alicia Palmer 6 th Grade Photosynthesis

• Go to the computer lab and have the students use Power. Point create a graphic web with pictures showing the process of photosynthesis in detail. Alicia Palmer 6 th Grade Photosynthesis

• After finishing their graphic webs, the students will present them to the class. Alicia Palmer 6 th Grade Photosynthesis

Closure • The students will be given peer evaluation sheets to fill out for each presentation and write 1 complete paragraph explaining how the other groups’ presentation helped them to understand the concept of photosynthesis. Alicia Palmer 6 th Grade Photosynthesis

Assessment Alicia Palmer 6 th Grade Photosynthesis

1. The students will present their graphic webs to the entire class. Alicia Palmer 6 th Grade Photosynthesis

2. Check graphic web for understanding of the basic process of photosynthesis, the organization of the graphic web (should be organized logically with links showing correct relationships and hierarchies), and it should show sufficient detail, and links and linking phrases should correctly identify relationships. Alicia Palmer 6 th Grade Photosynthesis

3. The students will write 2 complete paragraphs in their science journal explaining why photosynthesis is important to other living organisms. There responses must include the following vocabulary words: photosynthesis, chlorophyll, carbon dioxide, and oxygen. Also, include responses to the following questions: 1) Why you think talking to plants might be beneficial? 2)Why you think there are tree planting programs in major cities in the U. S. ? Alicia Palmer 6 th Grade Photosynthesis