Science4 Q1 Week4 PPT MATATAG EDUCATION.COM

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1. Science 4 Quarter 1 Week 4 Describe changes in properties of materials when exposed to certain changes in temperature, such as changes when wood or coal are burned.

2. LEARNING OBJECTIVES: DAY 1 At the end of the lesson, the learners should be able to identify changes in the materials that are useful and harmful to the environment.

3. Video Presentation Note: The video will be recorded prior to the delivery of the lesson. It is all about the burning of wastes materials in the dump area.

4. Cycles of nature are disrupted due to the different human activities like burning of wastes, dumping of waste materials in the river, and the like.

5. Passage Reading Numerous human activities such as overpopulation, pollution, the burning of fossil fuels, and deforestation have an adverse effect on the physical environment. Climate change, soil erosion, poor air quality, and undrinkable water have all been brought on by changes like these. These unfavorable effects may influence human behavior and lead to large-scale migrations or conflicts over access to clean water.

6. The phrase "air pollution" is very general and covers a wide range of chemicals and airborne particles. These pollutants can originate from many different places, such as automobiles, factories, power plants, and even open fires. Burning fossil fuels, like coal, oil, and natural gas, is the main source of air pollution. These substances emit dangerous compounds into the air when they are burned, such as carbon dioxide, nitrogen oxides, and sulphur dioxide. Lead, ground-level ozone, and particulate matter, which are microscopic bits of solids in the air (such soot and dirt), are some other air pollutants.

7. These gases and pollutants can harm people's health in many ways, including heart disease and a number of respiratory conditions like asthma, emphysema, and chronic bronchitis.

8. 1. What can you say of the picture? 2. What makes the area polluted? 3. What happens if the activities will be done continuously?

9. S ome human activities bring negative impact or changes in the environment.

10. 1. Which of the following materials is generally considered harmful to the environment? A) Biodegradable plastics B) Styrofoam (polystyrene) C) Paper D) Glass 2. What is a beneficial change in material use that helps the environment? A) Increased use of single-use plastics B) Replacement of plastic straws with reusable metal ones C) Higher consumption of disposable batteries D) More use of non-recyclable packaging materials Evaluation:

11. 3. Which type of material decomposition benefits the environment? A) Biodegradable materials breaking down naturally B) Non-biodegradable materials remaining unchanged for decades C) Recycling plastics into new products D) Burning waste materials in open fields 4. Which of these materials is harmful to wildlife and ecosystems? A) Recycled paper products B) Lead-based paints C) Organic cotton fabrics D) Aluminum cans 5. Which change in material usage contributes positively to reducing pollution? A) Increased use of chemical fertilizers in agriculture B) Switching from disposable plastic bags to reusable cloth bags C) More reliance on fossil fuels for energy D) Disposal of electronic waste in landfills

12. Has this lesson helped you understand why there is a need to take care of the environment? Write your answer on a sheet of paper. Reflection:

13. LEARNING OBJECTIVES: DAY 2 At the end of the lesson, the learners should be able describe the effects of some materials could be minimized.

14. T he harmful effects of the materials in the environment could be lessened or minimized.

15. Passage Reading Effective implementation of the "Three Rs" (Reduce, Reuse, and Recycling) campaign is required to encourage improved trash management. You would be better off donating the old jeans and using reusable shopping bags rather than turning an old pair of jeans into a bag that requires constant maintenance. Some initiatives could have a long learning curve and take practice to become used to.

16. Although sorting recyclables can be difficult at first, after you get the feel of the method, the associated tasks will come naturally to you. The most important way to reduce waste is to cut back on how much you buy. The secret is to only buy the things we actually need, and in the proper quantity. We won't need to mine raw materials, create items from scratch, create shipping materials, use more resources to send them, and then figure out how to get rid of them if we never produce them in the first place.

17. Many people find the thought of being wasteful unsettling. However, the majority of us still waste because we are unable to come up with a better use for items like last year's phone book, overly short draperies or a scratched closet door. Because of our conditioning, we tend to disregard the effects of our actions when disposing of items that are worn out, broken, unattractive, or otherwise damaged.

18. Nature Walk Strategy This activity would be done prior to the delivery of instruction to avoid overtime. Let the learners walk with their classmates and visit the entire premise of the school if possible. Learners should list materials that they have seen and identify if it could be reuse, reduce, and or recycle.

19. 1. Which action helps minimize the environmental impact of plastic waste? A) Incineration of plastic waste B) Recycling plastic bottles into new products C) Dumping plastic waste in oceans D) Increasing production of single-use plastics 2. How can the environmental impact of paper production be reduced? A) Clear-cutting forests for paper pulp B) Using recycled paper products C) Disposing of paper waste in landfills D) Increasing paper consumption Assessment:

20. 3. What is a sustainable practice to minimize the environmental effects of metals like aluminum? A) Throwing away aluminum cans after one use B) Recycling aluminum cans to conserve resources C) Manufacturing more single-use aluminum products D) Dumping aluminum waste in rivers 4. Which method helps mitigate the harmful effects of electronic waste (e-waste)? A) Sending e-waste to developing countries for disposal B) Recycling electronic devices for valuable metals C) Burying e-waste in backyard compost piles D) Burning e-waste in open fields 5. How can the environmental impact of textile production be minimized? A) Increasing use of synthetic fibers like polyester B) Encouraging fast fashion trends C) Opting for organic and sustainable fabrics D) Disposing of textiles in regular household garbage

21. The learners will be asked to answer the listed question either by class discussion or writing the answers in their worksheet. Has this lesson helped you to better understand why there is a need to reuse, reduce, and recycle? Reflection:

22. LEARNING OBJECTIVES: DAY 3 At the end of the lesson, the learners should be able describe the effects of some materials could be minimized.

23. Effective implementation of the "Three Rs" (Reduce, Reuse, and Recycling) campaign is required to encourage improved trash management. You would be better off donating the old jeans and using reusable shopping bags rather than turning an old pair of jeans into a bag that requires constant maintenance. Some initiatives could have a long learning curve and take practice to become used to. Although sorting recyclables can be difficult at first, after you get the feel of the method, the associated tasks will come naturally to you.

24. The most important way to reduce waste is to cut back on how much you buy. The secret is to only buy the things we actually need, and in the proper quantity. We won't need to mine raw materials, create items from scratch, create shipping materials, use more resources to send them, and then figure out how to get rid of them if we never produce them in the first place.

25. Many people find the thought of being wasteful unsettling. However, the majority of us still waste because we are unable to come up with a better use for items like last year's phone book, overly short draperies or a scratched closet door. Because of our conditioning, we tend to disregard the effects of our actions when disposing of items that are worn out, broken, unattractive, or otherwise damaged.

26. The teacher asks questions to the learners based from the passage read.

27. I dentify if it could be reuse, reduce, and or recycle.

28. 1. Recycling plastic helps reduce the amount of plastic waste that ends up in landfills and oceans. 2. Using recycled paper products contributes to conserving forests and reduces the environmental impact of paper production. 3. Reusing and repurposing electronic devices can help reduce the amount of electronic waste (e-waste) generated. 4. Composting organic waste helps minimize methane emissions from landfills and enriches soil health. 5. Opting for energy-efficient appliances and lighting helps reduce energy consumption and environmental impact. True or False

29. The learners will be asked to answer the listed question either by class discussion or writing the answers in their worksheet. Has this lesson helped you understand why we need to minimize our waste materials? Reflection:

30. LEARNING OBJECTIVES: DAY 4 At the end of the lesson, the learners should be able to describe how reactive materials could endanger human lives and properties.

31. Do you use Zonrox , a stain removal liquid, in your home?

32. Do you use kerosene lamp at home during brownouts? Why?

33. R eactive materials could pose danger to property and on one’s life. The negative effect of reactive materials could be minimized and or deterred.

34. Passage Reading Reactive materials are typically thought of as substances that, when exposed to heat, pressure, shock, friction, a catalyst, or contact with air or water, can become hazardous on their own. Reactive interactions call for the blending of two or more substances in order to create a risky scenario through a chemical reaction.

35. The teacher presents a video on how reactive materials could endanger human lives and properties.

36. S ome materials are reactive that they may cause harm to humans and properties if not properly handled or cared of.

37. 1. Which of the following is a potential danger associated with reactive materials? A) Stability and predictability B) Controlled reactions C) Uncontrolled explosions or fires D) Minimal risk of chemical reactions 2. Why are reactive materials handled with caution? A) They are easy to handle safely B) They pose no risk of harm to humans C) They can spontaneously ignite or explode D) They are non-reactive in nature Choose the correct answer.

38. 3. What precaution is necessary when storing reactive materials? A) Storing them near heat sources B) Ensuring proper ventilation C) Keeping them in unmarked containers D) Storing them in a cool, dry place away from incompatible substances 4. What is a potential consequence of mishandling reactive materials? A) Minimal impact on the environment B) Health benefits for those exposed C) Fires, toxic gas release, or explosions D) Enhanced safety measures

39. 5. How can the risks of reactive materials be mitigated in a laboratory setting? A) Regularly ignoring safety protocols B) Conducting experiments without protective gear C) Following strict handling and storage guidelines D) Storing them near flammable materials 6. Which statement is true about reactive materials? A) They are always stable and predictable B) They do not pose any risk to the environment C) They can react violently with air, water, or other substances D) They are not affected by changes in temperature or humidity

40. 7. What should be included in the handling procedures for reactive materials? A) Use of proper personal protective equipment (PPE) B) Handling them casually without any precautions C) Storing them in direct sunlight D) Mixing them with incompatible substances 8. Why is proper training essential when working with reactive materials? A) Training is unnecessary for safe handling B) To ensure understanding of potential hazards and proper procedures C) Because reactive materials are inert and harmless D) To encourage experimentation without supervision

41. 9. What should be avoided when disposing of reactive materials? A) Disposing of them in regular trash bins B) Ensuring they are fully used before disposal C) Recycling them without proper safety precautions D) Composting them with organic waste 10. How can emergency preparedness be improved when dealing with reactive materials? A) Ignoring safety drills and protocols B) Having a clear emergency response plan C) Keeping emergency exits blocked D) Using reactive materials without proper ventilation

42. The learners will be asked to answer the listed question either by class discussion or writing the answers in their worksheet. Has this lesson helped you understand why there is a need to segregate the waste materials properly? Reflection:

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