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Which subject	Science
What topic	Irradiation and contamination
What length (min)	30
What age group	Doesn't matter
Class size	20
What curriculum
Include full script
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Ask some students to presents their homework
Add a physical break
Add group activities
Include homework
Show correct answers
Prepare slide templates
Number of slides	5
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Lesson plan

Lesson Plan: Irradiation and Contamination

Subject

Science

Topic

Irradiation and Contamination

Grade/Age Group

All grades (appropriate for secondary education)

Length of Lesson

30 minutes

Number of Students

20

National Curriculum Compliance

This lesson adheres to the UK National Curriculum for Science, focusing on the understanding of radiation, its effects and applications, as well as the differences between irradiation and contamination.

Objectives

• Define key terms: irradiation and contamination.
• Explain the differences between irradiation and contamination.
• Identify real-life examples of both phenomena.
• Discuss the safety measures related to radiation.

Materials

• Whiteboard and markers
• Projector and computer (for multimedia presentation)
• Printed worksheets with key concepts and definitions
• Samples or images of irradiated objects (e.g., food, medical supplies)
• Safety posters related to radiation

Lesson Structure

Step Number	Step Title	Length	Details
1	Introduction	5 mins	Brief overview of the lesson's topic and objectives; engage students by asking prior knowledge questions about irradiation and contamination.
2	Definitions	7 mins	Introduce key terms: irradiation and contamination with examples. Use visuals on the projector to illustrate concepts.
3	Discussion	8 mins	Facilitate a discussion on real-life examples. Divide students into small groups to brainstorm common examples of irradiation and contamination.
4	Safety Measures	5 mins	Present safety measures when dealing with radiation. Discuss the importance of understanding these phenomena in daily life, especially in healthcare and food safety.
5	Recap and Questions	3 mins	Summarise key points from the lesson and ask if students have questions. Clarify any potential misconceptions.
6	Homework Assignment	2 mins	Distribute homework sheets asking students to find one example of irradiation and one of contamination, including a brief explanation. Homework will be collected for review, but not presented in class.

Homework

• Find one real-life example of irradiation and one of contamination.
• Write a brief explanation (3–5 sentences each) to accompany each example.
• Submit the homework in the next class; no presentations will be required.

Assessment

• Monitor student participation during discussions.
• Review homework for understanding of concepts without requiring presentations.

Additional Notes

• Ensure that all students have access to materials and understand instructions.
• Be prepared to offer additional explanations or examples for students who may struggle with the concepts.

Lesson script