1 / 29

Heartiest welcome

Heartiest welcome. Identification. TeacherIdentification Md. Rafiqul Islam Assistant Teacher Fatiamari Najgor Ali High School. Lesson Identification Class : Ten Subject : English First paper Unit: Twenty One Lesson: 6 Today’s topic :The Killing Water. Previous knowledge test.

breck
Download Presentation

Heartiest welcome

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Heartiest welcome

  2. Identification TeacherIdentification Md. Rafiqul Islam Assistant Teacher FatiamariNajgor Ali High School Lesson Identification Class : Ten Subject : English First paper Unit: Twenty One Lesson: 6 Today’s topic :The Killing Water

  3. Previous knowledge test Industrial liquid waste materials are always mixing in water

  4. Polluted water are always mixing in drainages system from towns and cities.

  5. Cane, bottles, polythin and wastes materials are always mixing in water. Stole and urine of human are always mixing from empty latrine in slum arears.

  6. Today’s Topic : • The Killing Water

  7. Learning Outcome • By the end of this lesson you will have – • mentioned some water borne disease • Answered questions on arsenicosis • read a newspaper article and made a list • asked suggestions from a partner • planned a leaflet

  8. New vocabulary • Arsenic, Arsenicosis , contaminated, surface, contain , overnight,

  9. New affected people Arsenic affected people Thousands of people in Bangladesh are suffering from arsenic poisonings and more are being affected every day.

  10. Arsenicosis is caused by drinking tube well water containing arsenic.

  11. People who drink uncontaminated water do not catch arsenic from affected people

  12. The main recommendation for the people who are affected by arsenic is to drink water from a source that contains no arsenic.

  13. The effects of arsenicosis are less severe among people who eat a healthy, balanced diet, ideally containg fish and vegetables. This is an initial treatment for arsenicosis and may be part of the reason why the number of arsenicosis patient in angladesh is till relatively low.

  14. It is believed that vitamins A , C and E are effective for treatment of arsenicosis

  15. Unsafe Safe The majority of the tube wells in Bangladesh are free from arsenic , but they need to be tested to separate the safe from the unsafe and in many areas , this has not yet been tested for arsenic, should be painted green if they are safe or red if they are unsafe.

  16. Deep tube well water Deep tube wells are free from arsenic and bacteria although they will need testing in the future to ensure that it still the case.

  17. Pond water River water Surface water in ponds and rivers is a potential source of arsenic free water.

  18. Empty latrine If a latrine empties into a pond,

  19. washing livestock in pond if it is used for washing livestock,

  20. Using cow dung for fish cultivation if a pond is used for fish cultivation with the use of cow dung,

  21. If it receives run off water from nearby field,

  22. the water should not be used for drinking even after treatment.

  23. Rain water harvesting system Rain water can be collected. This water is free from arsenic and bacteria although must be taken to ensure that the container is clear.

  24. Filtering System If there is no source of water other than a red tube well make sure you do the following: Leave the water to stand in a pitcher overnight and filter the upper portion through another pitcher containing sand which will remove the arsenic.

  25. Arsenic contaminated water is boiling Boiling tube well water will not remove the arsenic.

  26. Group work Write down the safe sources of water on your khata.

  27. Evalution • How many people are suffering from arsenicosis ? • What is the effective treatment of arsenicosis ? • Which colour is the symbol of safe water ? • Which colour is the symbol of unsafe water ?

  28. Home work Imagine that your area has been hit by arsenicosis and you are planning to publish a leaflet to make people aware of the danger. Make a list of what should go in the leaflet.

  29. Thanks to all

More Related