Lesson Plan | Teachy Methodology | Work: Non-Conservative Systems

Objectives

Duration: 10 to 15 minutes

This stage aims to introduce students to the central theme of the lesson, outlining the main objectives that will guide their practical activities and subsequent discussions. This approach helps connect theoretical concepts to the specific skills that students will develop during the lesson, ensuring they are aware of the focus of learning and the context in which this knowledge will be applied.

Main Objectives

1. Understand the concept of non-conservative forces and their impact on the work done on an object.

2. Calculate the work done by non-conservative forces, such as friction, and relate it to the variation of kinetic energy in a system.

3. Apply these concepts to practical problems and everyday situations to achieve a better understanding of the content.

Side Objectives

1. Encourage critical and analytical thinking among students as they solve practical problems.
2. Foster collaboration and communication among students during group activities.

Introduction

Duration: 10 to 15 minutes

This stage aims to introduce students to the central theme of the lesson, outlining the main objectives that will guide their practical activities and subsequent discussions. This approach helps connect theoretical concepts to the specific skills that students will develop during the lesson, ensuring they are aware of the focus of learning and the context in which this knowledge will be applied.

Warming Up

Start the lesson with a brief explanation of non-conservative forces, especially highlighting friction. Explain how these forces do work in contrast to conservative forces, dissipating energy in the form of heat or sound. Then, ask students to use their cell phones to research and share an interesting fact or a practical application about non-conservative forces, especially friction, on social media or reliable online sources.

Initial Reflections

1. What is the difference between conservative and non-conservative forces?

2. How does friction affect the movement of an object?

3. What are some everyday situations where we can observe non-conservative forces in action?

4. How can we calculate the work done by a non-conservative force?

5. In what way is the variation in kinetic energy related to the work done by non-conservative forces?

Development

Duration: 70 to 80 minutes

This stage aims to provide students with a practical and engaging experience, allowing them to apply the concepts of work and non-conservative forces in real and digital contexts. Through collaborative activities and the use of technologies, the goal is to improve understanding and retention of the content in a dynamic and creative way.

Activity Suggestions

It is recommended that only one of the suggested activities be carried out

Activity 1 - 🚗 Virtual Race with Friction

> Duration: 60 to 70 minutes

- Objective: Understand how non-conservative forces, such as friction, influence the motion and kinetic energy of moving objects, using a practical and digital approach.

- Description: Students will be divided into groups and participate in a virtual race using an online physics simulator that includes the simulation of non-conservative forces, such as friction. The groups must adjust the race parameters, such as surface type and friction strength, and calculate the work done by non-conservative forces. At the end of the race, each group must present their conclusions and relate the results to the variation of the kinetic energy of the cars.

- Instructions:

• Divide the class into groups of up to 5 students.

• Direct students to a physics simulator that allows adjustment of parameters such as surface type and friction strength. A suggestion is the PhET Interactive Simulations.

• Each group must configure a virtual race, adjusting the indicated parameters.

• During the simulation, students should calculate and note the work done by friction forces and relate these calculations to the variation of the kinetic energy of the vehicles.

• At the end of the activity, each group should prepare a brief presentation (using, for example, Google Slides) to share their results and conclusions with the class.

Activity 2 - 📱 Digital Influencer: Science in Action!

> Duration: 60 to 70 minutes

- Objective: Promote the understanding of physics concepts through the creation and sharing of educational content on social media, encouraging scientific communication and the use of digital technologies.

- Description: Students will act as scientific digital influencers and create educational content for their social media explaining concepts of work done by non-conservative forces and variation in kinetic energy. Each group will choose a type of non-conservative force (such as friction, air drag, etc.) and create a sequence of posts or a short video (up to 2 minutes) demonstrating simple experiments that can be conducted at home or using online simulations.

- Instructions:

• Divide the class into groups of up to 5 students.

• Each group must choose a type of non-conservative force (e.g., friction, air drag).

• Instruct students to develop a sequence of posts or a short video (up to 2 minutes) using their cell phones, explaining and demonstrating the chosen concept.

• Students can conduct small experiments at home or use online simulations to create the content.

• Students must share their content on social media and tag their classmates and the school page, if possible.

• After sharing, each group must present their content to the class and open the floor for questions and discussions.

Activity 3 - 🎮 Gamification: Non-Conservative Forces Challenge

> Duration: 60 to 70 minutes

- Objective: Review and consolidate knowledge about non-conservative forces in an interactive and fun way, using gamification as an engagement tool.

- Description: The class will be divided into groups that will participate in a gamified quiz about non-conservative forces. Using a gamification platform, such as Kahoot! or Quizizz, the teacher should prepare a quiz with questions related to the lesson topic. The groups will compete against each other to see who answers the most questions correctly, promoting review and deepening the studied concepts.

- Instructions:

• Divide the class into groups of up to 5 students.

• Prepare a quiz on non-conservative forces using a gamification platform like Kahoot! or Quizizz.

• Explain the game rules to the students and how scoring will be assigned.

• Each group should access the platform using cell phones or computers, choosing a creative team name.

• Start the quiz and allow groups to answer the questions within the stipulated time.

• After the quiz ends, reveal the results and discuss the correct and incorrect answers to reinforce learning.

Feedback

Duration: 20 to 25 minutes

This stage aims to consolidate student learning through experience sharing, promote critical reflection on the concepts worked, and encourage collaboration and communication through peer feedback. This approach helps reinforce understanding of the concepts of non-conservative forces and variation in kinetic energy, as well as develop important social skills.

Group Discussion

Promote a group discussion with all students, where the groups share what they learned from the activities and their conclusions. Use the following script to introduce the discussion:

1. Introduction: "Now that all groups have completed their activities, let's share our discoveries and reflections. I would like each group to present, in no more than 5 minutes, a summary of what they learned and how they reported the variation in kinetic energy related to the work done by non-conservative forces."
2. Group Presentations: Instruct each group to present their results.
3. Open Discussion: After the presentations, open the floor for questions and discussions among groups. Encourage students to ask each other questions and discuss the differences and similarities in the results obtained.

Reflections

1. What is the main difference observed between conservative and non-conservative forces in the experiments conducted? 2. How did the variation in kinetic energy relate to the work done by non-conservative forces in your simulations? 3. What difficulties did you encounter when calculating the work done by non-conservative forces and how did you overcome them?

360° Feedback

Conduct a 360° feedback session where each student receives feedback from other members of the group they worked with. Instruct students to follow these guidelines to ensure the feedback is constructive and respectful:

1. Be Specific: Provide concrete examples of what went well and what could be improved.
2. Be Respectful: Maintain a positive and encouraging tone. Avoid negative criticism and focus on suggestions for improvement.
3. Listen Actively: Each student should listen to the feedback received without interrupting and reflect on the points raised.

Conclusion

Duration: 10 to 15 minutes

💡 Purpose: This stage aims to consolidate learning by connecting the studied concepts with students' reality and highlighting the practical relevance of the topic. It is crucial to show how what has been learned applies to real and everyday situations, valuing the importance of acquired knowledge.

Summary

📚 Summary: Think of non-conservative forces as a party full of surprises! 🎉 They do extra work, like friction that slows everything down and transforms kinetic energy into heat. Remember our virtual race and digital influencer posts? We used these activities to discover that the work done by forces like friction is essential for understanding why a car doesn't keep moving forever without fuel! 🚗✨

World Connection

🌍 In the World: In our modern world, non-conservative forces are everywhere. Just think about how car brakes work or how shoes are designed for traction. Understanding these forces is essential for engineering, product design, and even creating realistic games and simulations! 🎮🚀

Practical Application

🔧 Applications: Knowing the role of non-conservative forces helps us improve energy efficiency, vehicle safety, and develop more advanced technologies. Imagine knowing how to calculate exactly how friction affects the movement of a drone or a robot! 🤖📈