Major Tuesday.docx

Subject Class Date Time No. of students Theme Learning Area Learning Objective

: Science : 4 Bestari : 12 Sept 2017 : 12.05-1.05.p.m (60minutes) : 34 students : Energy in Life : 6. Nuclear energy : 6.3 Awareness of the need for proper handling of radioactive substances

Learning Outcomes

: At the end of the lesson, a student is able to: A

B C

Master content knowledge a. state the effects of radioactive radiations on living things, b. describe the correct way of handling radioactive substances and radioactive waste, c. explain the need for proper handling of radioactive substances and radioactive waste. Master Scientific Skills/TSTS a. relate the effect of radioactive radiations on living things, Demonstrate Scientific Attitudes and Noble Values a. Being responsible about the safety of oneself, others, and the environment.

Teaching material and sources: - Science Text Book Form 4 - Science PDP Module Form 4 - Video -

white board, marker pen, notebook, computer, projector

Phase:

Content:

Teacher’s activity:

Students’ activity:

Notes:

Introduction

Nuclear energy is produced through nuclear fission and nuclear fusion.

Teacher asks the student a question about previous lesson and explains by referring to Science PDP Module.

Students give

Teaching source:

response

Science PDP Module

(15 min)

Nuclear fission is the splitting of heavy nucleus into 2 lighter nuclei that have similar mass

(Answer) to teacher questions.

Teacher also shows the video( a video that cannot be presented on Monday)

Teacher proceeds to the next lesson after student already master the previous lesson. Teacher explains and state the

Restoration

Teaching source :

Negative Effect of Radioactive Substance

effect of radioactive radiations

activity:

-Slide on power point.

1. When radioactive emissions strikes living cells, it can cause

on living things ,the correct

Listen to teacher’s

-Science

ionization to the molecules of the cells.

way of handling radioactive

explanation.

Form 4

This may cause the cells to be killed, resulting in tissue

substances and radioactive

damage.

waste, and the need for

Students copy the

proper handling of radioactive

notes and highlight

substances and radioactive

important points.

Structuring (40min)

2. At low doses of radiation, the damaged tissues can repair itself rapidly. 3. High doses of radiation can cause burn effects known as

waste.

radiation burns. 4. The ionization effect of radiation can also cause genetic damage to the molecules of the cells. This may lead to the formation of cancerous cells and tumour development.

Teacher instructs the students to copy the notes.

Text

Book

-Science PDP Module Form 4

Value: Being responsible about the safety of oneself, others, and the environment

Safety Precautions in the Handling of Radioactive Substances Radioactive substance must always he handled with the correct procedures to prevent harmful effects to people and the environment. The following are sortie basic precautions: 1. Read and follow the advice and instructions marked on radioactive sources, equipment and work manuals. Gloves must be worn any time an unsealed source is being used or whenever contamination is likely to occur. 2. Laboratory coats, long pants, and closed-toe footwear should be worn. Assessment

Teacher instruct the students

Students complete

Teaching source:

(10minute)

to complete the task on

the task.

Science PDP Module Form 4

module page 41

Conclusion (5min)

1. Eating, drinking, applying cosmetics or storing of food is prohibited. 2. All work surfaces and storage areas (e.g. table tops and floors)

Teacher summarizes the lesson and stress out important point.

Students write down important notes on

Teaching source: Slide on power point.

should be covered with absorbent material to contain radioactive material contamination. 3. When using radioactive liquids, plastic or metal trays (stainless steel washes easily) should be utilised to contain potential spills. 4. Radioactive material, especially liquids, should be kept in unbreakable containers whenever possible. If glass is used, a secondary container is necessary. 5. Before eating or drinking, wash hands and forearms thoroughly. 6. Radioactive sources for educational use are kept in lead boxes.

Reflection:

their note book.