Subject: General Biology 1
Grade Level: Grade 11
Objective: Explain the postulates of the cell theory.
Learning across the curriculum:
1. Chemistry - Discuss the chemical components of cells.
2. History - Explore the historical development of the cell theory.
3. English - Write a research paper on the contributions of key scientists to the cell theory.
Elicit:
Access prior knowledge by asking students to recall what they know about cells and their
functions.
Engage:
1. Show a short video clip highlighting the importance of cells in living organisms.
2. Conduct a class discussion on the significance of understanding the cell theory.
3. Present a real-life scenario where knowledge of the cell theory would be applicable and
discuss its relevance.
Explore:
Activity 1: Microscope Investigation
Materials:
- Microscopes
- Prepared slides of different cell types
Instructions:
1. Divide students into small groups.
2. Provide each group with a microscope and prepared slides.
3. Instruct students to observe the slides and identify different cell structures.
4. Encourage them to discuss and compare their observations.
Rubric:
- Correct identification of cell structures (5 points)
- Accurate description of observations (5 points)
Assessment Questions:
1. What are the similarities and differences between the observed cell structures?
2. How do the observed cell structures relate to the functions of the respective cells?
Activity 2: Cell Theory Timeline
Materials:
- Poster board
- Markers
Instructions:
1. Divide students into pairs.
2. Provide each pair with a poster board and markers.
3. Instruct students to create a timeline illustrating the historical development of the cell
theory.
4. Encourage them to include key scientists and their contributions.
Rubric:
- Accuracy of timeline (5 points)
- Inclusion of key scientists and their contributions (5 points)
Assessment Questions:
1. Who were the key scientists in the development of the cell theory, and what were their
contributions?
2. How did the cell theory evolve over time?
Activity 3: Cell Structure Models
Materials:
- Playdough or clay
- Toothpicks
Instructions:
1. Divide students into small groups.
2. Provide each group with playdough or clay and toothpicks.
3. Instruct students to create 3D models of different cell structures using the materials
provided.
4. Encourage them to label the structures and explain their functions.
Rubric:
- Accuracy of cell structure representation (5 points)
- Clear labeling and explanation of functions (5 points)
Assessment Questions:
1. What are the main functions of the cell structures represented in your model?
2. How do the different cell structures work together to maintain cell function?
Explain:
1. Present a lecture on the postulates of the cell theory, emphasizing the contributions of key
scientists.
2. Conduct a group discussion where students can ask questions and clarify their
understanding.
Elaborate:
1. Assign students to research and present a short report on a recent scientific discovery
related to the cell theory.
2. Organize a debate where students argue for or against a proposed modification of the cell
theory.
Evaluate:
1. Create a written test that assesses students' understanding of the postulates of the cell
theory.
2. Design a project where students have to create a visual representation explaining the
significance of the cell theory.
Extend:
Encourage students to explore advanced topics in cell biology, such as cell signaling, cell
division, or cellular respiration.
Assignment:
Write a research paper on the contributions of key scientists to the cell theory. Include their
experiments, observations, and how their findings shaped our understanding of cells.
By following this 7Es lesson plan, students will actively engage in exploring the postulates of
the cell theory, leading to a deeper understanding and appreciation of the topic.