SCIENCE V November 26, 2015 - Thursday

I. Objective: Practice precautionary measures related to electricity e.g. unplugging electrical appliances during

brownouts or thunderstorms. II. Subject Matter

Precautions in the Use of Electricity References: RBEC-PELC Unit 5.8 p. 19

Science Concepts: Be absolutely careful when using electricity. Carelessness can lead to fire, electrocutions and

certain death. Know all safety precautions. When in doubt, consult a licensed electrician or consult the fire station employees for fire prevention tips.

Materials: powerpoint presentation Science Processes: Critical Thinking and Reasoning

III. Procedure A. Preliminary Activities

1. Review Give as many appliances as you can which are used at home or in the community.

2. Motivation What can electricity do with our life, with our work, and with our activities?

B. Developmental Activities

3. Presentation Electricity is very important and useful to us. It can help us in many ways. It

can make our work faster and easier because of electricity, we can live conveniently and comfortably. But electricity can also be dangerous so we should learn how to use

it properly and safely. 4. Discussion Will it always be good and useful?

How do you think can we avoid the dangers brought about by electricity?

Below is a list of safety precautions in the use of electricity.

1. Disconnect electrical appliances when not in use 2. Replace damaged or old wires

3. Turn off the main switch when replacing a fuse or when repairing electrical wiring.

4. Put electric cords away from passage ways. 5. Change a burn-out fuse with one of the same capacity.

6. Unplug appliances by carefully disconnecting the cord. 7. Limit the number of appliances connected to one outlet at a time.

8. Avoid touching the switch of electrical appliances when hands are wet. 9. During thunderstorm, brown-outs, unplug electrical appliances.

ACITIVITY: (by group)

Learning Activity Sheet- Lesson 68

Direction: Study different illustrations and write in your own words what safety

precaution can be done to be safe in using electrical devices. Enter it in the table below and fill up the checklist. If you are doing it, write a checkmark under YES. If

not, check under NO.

Safety Precaution Yes No

1.

2.

Why should we practice safety precautions in the use of electricity? What happens if we don’t?

5. Generalization What are the safety precautions to follow in the use of electricity?

How should we follow these precautions?

6. Application To be sure that electric facilities are safe for use, whom should we consult?

IV. Evaluation

By Group: A. Choose one precautionary measure that we have discussed.

B. Act out the precautionary measures related to electricity.

V. Assignment Check the practices one can follow to be safe in the use of electricity.

1. Wipe your hands dry before plugging or unplugging. 2. Cover bare electric wire with a plastic.

3. Disconnect electric wire with a plastic tape.

4. It is safe to connect as many appliances to an outlet at a time. 5. It is safe to change burned fuse with the silver wrapper of cigarettes.

6. Electric cords are covered with insulator. You may put them along passageways. 7. Carefully disconnect the cord when plugging the appliances.

8. When you repair a wiring or replace a fuse turn off the main switch. 9. Outlets should be installed away from children’s reach.

10. When handling high power machineries, always use rubber or rubber shoes.

3.