11th Grade Feedback Mechanism On Plants Lesson Plan Example (Science)

Topic: Feedback Mechanism on Plants

Objectives & Outcomes

• Students will be able to understand the concept of feedback mechanism and how it works in plants.

Materials

• Images of plants
• Handouts with information about feedback mechanism and plants
• Computers or tablets with internet access

Warm-up

• Ask students if they have heard of the term "feedback mechanism."
• Ask them to explain what it is and how it works.
• Write their answers on the board.

Direct Instruction

• Explain that feedback mechanisms are systems that monitor and adjust their own internal processes in response to changes in the environment.
• For example, if it is cold outside, the body may activate its heat-generating mechanisms to keep itself warm.
• This is an example of a negative feedback mechanism, because it acts to reduce the output and bring the system back to its normal state.
• Positive feedback mechanisms, on the other hand, act to increase the output and push the system beyond its normal state. For example, if a person is experiencing a fever, the body may activate its heat-generating mechanisms to try to reduce the fever. But if the fever continues, the body may activate its heat-generating mechanisms to a greater extent, leading to overheating and potentially causing serious damage.
• Explain that plants also have feedback mechanisms that help them adapt to their environment.
• For example, plants may have mechanisms that respond to changes in light intensity by altering their growth and development.
• They may also have mechanisms that respond to changes in temperature by altering the rate of their biochemical reactions.

Guided Practice

• Divide the class into small groups and provide each group with a plant (or have them watch a video of a plant).
• Ask the groups to observe the plant and identify any feedback mechanisms that they can see being activated.
• Have them explain their observations and discuss how the mechanisms help the plant to respond to its environment.
• Have the groups present their findings to the class.

Independent Practice

• Have students use the resources provided to research a different type of plant and identify any feedback mechanisms that it uses.
• Ask them to write a brief report explaining their findings and how the mechanisms help the plant to respond to its environment.

Closure

• To wrap up the lesson, ask students to share their reports with the class and discuss the importance of feedback mechanisms in plants.
• Encourage them to think about how these mechanisms can be applied in the field of engineering and how they can be used to design self-adjusting systems.

Assessment

• Assess students' understanding of the concept through their participation in class discussions and their ability to apply it in their reports.
• Administer a quiz to check their understanding of the concept and the examples used in the lesson.