| Lesson Plan |
| Grade: |
Date: 25/02/2026 |
| Subject: Physics |
| Lesson Topic: understand that a hadron may be either a baryon (consisting of three quarks) or a meson (consisting of one quark and one antiquark) |
Learning Objective/s:
- Describe the classification of hadrons into baryons and mesons.
- Explain the quark composition of baryons (three quarks) and mesons (quark‑antiquark pair).
- Calculate the electric charge of selected baryons and mesons using quark charges.
- Compare spin and mass characteristics of baryons and mesons.
- Identify the type of hadron from a given quark content.
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Materials Needed:
- Projector or interactive whiteboard
- Slide presentation with quark diagrams
- Printed worksheet containing hadron tables
- Colored cards representing quarks and antiquarks
- Calculator for charge calculations
- Exit‑ticket slips
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Introduction:
Begin with a quick recall question: “Which particles feel the strong nuclear force?” Connect this to prior knowledge of protons and neutrons. State that today’s success criteria are to classify hadrons correctly and to determine their charges from quark content.
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Lesson Structure:
- Do‑now (5') – Students list known particles that experience the strong force.
- Mini‑lecture (10') – Overview of quarks, hadrons, and the distinction between baryons (qqq) and mesons (q̅).
- Guided practice (12') – Work through charge calculations for the proton, neutron, and π⁺ using the worksheet.
- Interactive activity (15') – In groups, students use quark cards to construct specified hadrons and record their quark composition.
- Concept check (8') – Quick Kahoot quiz to differentiate baryons from mesons.
- Summary & questions (5') – Teacher recaps key points and addresses remaining doubts.
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Conclusion:
Recap the main ideas: hadrons are either three‑quark baryons or quark‑antiquark mesons, and their charges sum to integer multiples of e. Students complete an exit ticket identifying a hadron type from its quark content. For homework, assign an online quiz requiring students to classify additional hadrons and compute their charges.
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