Begin with a captivating question: 'Have you ever wondered how leaves help plants make their food?' This will engage students and introduce the topic of photosynthesis.
Go to the LessonLesson Plans
Internal Structures – Leaves
Learning Objectives
- Understand the role of leaves in the process of photosynthesis.
- Describe the function of stomata in gas exchange for photosynthesis.
- Identify the role of chloroplasts in converting sunlight into food for the plant.
- Explain how xylem and phloem transport water, nutrients, and sugars throughout the plant.
Introduction and Hook
Show a short clip from the video 'Photosynthesis' to provide a visual introduction to the process of photosynthesis and the role of leaves.
Direct Instruction
Explain the process of photosynthesis, emphasizing the role of chloroplasts in converting sunlight into food for the plant.
Discuss the function of stomata in gas exchange, using the video 'What are stomata and what's their function?' to illustrate how stomata facilitate photosynthesis.
Guided Exploration
Guide students through an exploration of xylem and phloem, explaining how these structures transport water, nutrients, and sugars throughout the plant.
Use the video 'Misconceptions in Science – Plants, Soil and Photosynthesis' to address common misconceptions about plant growth and the role of photosynthesis.
Hands-On Activity
Conduct an experiment to observe the function of stomata by using petroleum jelly to block air from entering the leaves of a plant. Record observations and discuss results.
Use the assessment 'Do Leaves Need Carbon Dioxide?' to guide students through a hands-on investigation of the role of carbon dioxide in photosynthesis.
Independent Practice
Assign the worksheet 'Function of Leaves' for students to complete independently, reinforcing their understanding of the primary function of leaves in photosynthesis.
Check for Understanding
Engage students in a discussion to check their understanding of how leaves function in photosynthesis and the role of stomata, chloroplasts, xylem, and phloem.
Use formative assessment techniques such as exit tickets or quick quizzes to gauge student comprehension of the lesson objectives.
Review and Reflection
Have students reflect on what they learned about the internal structures of leaves and their functions by writing a short paragraph or creating a concept map.
Facilitate a class discussion to review key concepts and address any remaining questions or misconceptions.
Assessment and Extension
Administer the 'Review – Plant Structures and Functions' assessment to evaluate students' understanding of the lesson content.
Encourage students to further explore the topic by researching how different plants have adapted their leaf structures to various environments.
Try the Quiz
