Lesson 8- Proper Waste Disposal_zion.pptx

Science-Lesson 8Proper Waste Disposal  According to the Properties of Each Material

Old Saga Sagay y Elemen Elementary tary School

Objective: Demonstrate proper disposal of waste according to its properties.

Objective: Demonstrate proper disposal of waste according to its properties.

Let’s Recall What are the effects of exposure to decaying waste on the environment and to our health? Answer: It will cause

pollution and make people

Let’s Recall What can you do help lessen these effects to man ? Answer: Practice multi-F’s recycling scheme which is factory returnable, fertilizers, feed, fermentable, fuel, fine crafts, and fig materials or the 5Rs

Presentation Have you gone to hospitals and markets? What are the waste materials commonly found in hospitals? What common wastes can you find in markets?

Materials needed:     

Leaves  Soft drinks can  Juice wrappers  Plastics bags  Disposable diaper 

Candy wrappers Empty boxes Styro cups paper 

Standards for Group Activity     

Cooperate with your group Share your ideas with your group Stay focused on task Talk softly not to disturb other groups. Raise your hand if you have

Station 1-Hospital

Station 2-Market

Station 3-School

What to do? 1. Go to your assigned station.

2. Identify the kind of materials in your station. 3. List the materials in your science notebook. 4. Group the materials according to the following properties: biodegradable,

What to do? 5. Use the sacks in your station to place the waste materials. 6. In your science notebook, list the steps to be followed in disposing the waste materials in your assigned station. 7. Prepare a group presentation on proper waste segregation to be performed in class.

Waste Materials in Hospitals Biodegradable

Non-biodegradable

Tissue Paper

Gauze

Medicine dropper

gloves

Medicine bottles Disposable bottles bandage

masks

Waste table Materials in Hospitals Biodegradable

Nonbiodegradable

Combustible

Waste Materials in Markets Disposable plates

Disposable forks

Disposable spoons

Rotten fruits

Rotten vegetables

Plastic bags

Empty bottles

Fish gills

Meat bones

Empty containers

Waste Materials in Schools Disposable spoons

sticks

Dry leaves

Plastic bottles

Empty bottles

Fish gills

Papers

Disposable forks

Write if the waste materials is biodegradable, recyclable, and/or combustible.

1. 2. 3. 4. 5. 6. 7. 8. 9. 10.

Masks Rotten vegetable Medicine wrapper Bandage Fish gills Dry leaves Sticks Empty bottles Dextrose bags plastics

Group Activity Guide Questions

10 minutes

Guide Questions Guide Questions

1. What waste materials are found in your station? • Hospital • Market • School

Guide Questions Guide Questions 2. What are the properties of each of the waste materials? • Some materials undergo decay, some are made of plastics

Guide Questions Guide Questions 3. Were all the materials disposable • Some materials ar disposable, so are not.

Guide Questions Guide Questions 4. How did you dispose the waste materials? • We group them first according to their properties

Guide Questions Guide Questions 5. Where did you place the materials that undergo decay? • We put them in a separate contain

Guide Questions Guide Questions 6. What did you do with the material that undergo decay? • make a compost 

Guide Questions Guide Questions 7. What did you do with the material made of plastic, metals and other non-decaying materials • Materials made of plastic were  placed in a sack; used batteries an bulbs were placed in a box.

Guide Questions Guide Questions 8. Are there waste materials that ca be reused? What are they? • Yes.

Guide Questions Guide Questions 9. What are the materials that can b recycled? • Plastic bottles, papers and boxes.

Guide Questions Guide Questions 10. What did you learn in this activit

Proper

disposal of human waste is important to avoid pollution of water sources.

Disposal

must be done to avoid harming the environment or causing harm to human health.

Waste

should never be disposed down sinks, drains, lavatories, ditches, near wildlife or ponds.

Products

for disposal should not be mixed together and containers should be clearly labeled.

Separate

materials into bio-degradable and non-biodegradable.

BIODEGRADABLE

MATERIALS are materials which decay such as leaves,paper and twigs

NON-BIODEGRADABLE

are materials or substances that do not

RECYCLE

some of the nonbiodegradable materials.



Make a compost out of decaying materials.

Compost are

waste materials that are recycled as fertilizer 

EVALUATION

Evaluation Given are some of the waste materials in our

surroundings. Demonstrate ways of disposing them Read and answer each questions. through athe drawing.Explain drawing. Choose letter of the your correct answer.

1.Which material is biodegradable?  A.Plastic bag C. styro cup B.Vegetable craps D. used battery 2. How should not-decaying wastes be disposed?  A. By composting C. by recycling

EVALUATION

Evaluation Given are some of the waste materials in our

surroundings. Demonstrate ways of disposing them through a drawing.Explain your drawing. 3. Which is the best way of disposing decaying materials?  A. Make a compost B. Mix them with the non-decaying C. Burn them D. throw them in the river 

EVALUATION

Evaluation Given are some of the waste materials in our surroundings. Demonstrate ways of disposing them through a drawing.Explain materials your drawing. 4. Non-biodegradable can be

 ________.  A. recycled and reused B. turned into fertilizers C. Decayed D. eaten

EVALUATION

Evaluation

Given are some of the waste materials in our surroundings. Demonstrate ways of disposing them through a drawing.Explain your drawing. 5. Which act shows recycling of waste

materials?  A. Make a compost out of vegetable craps and leaves B. Throw plastic bottles and glass canisters in the garbage. C. Make a beautiful home décor out of plastic bottles.

EVALUATION

Enrichment

Given are some of the waste materials in our Identify the material whether biodegradable or nonsurroundings. Demonstrate ways of disposing them biodegradable. Identify ways on how to dispose them. through aBiodegradab drawing.Explain your drawing. Biodegradable Ways of Ways of /nonDisposing it biodegradable

le/nonDisposing it biodegradab le

1

2

4

5

Make a pen holder out of  plastic bottles.

References Science 4 TG pp. 24-28 Science 4 LM pp. 23-25

Activity Title

How will I assort or separate materials?

Name of Materials

Description (Odor, Color, Size, etc)

Properties (biodegradable, onbiodegradable or combustibe)

paper

white

biodegradable

Rotten lemon

Yellow, sour

biodegradable

Plastic bottle

small

Non-biodegradable

Dried leaves

brown

biodegradable

Tin can

Gray, medium

Non-biodegradable

ballpen

short

Non-biodegradable