Natural resources 3rd / 4th grades (teach)


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Basis for a lesson on natural resources, those things from nature that we need to survive, pitched at about the 3rd or 4th grade level.

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Natural resources 3rd / 4th grades (teach)

  1. 1. Natural Resources 3rd / 4th GradesMoira Whitehouse PhD
  2. 2. Like dinosaurs, if humansdon’t meet their needsthey also will become extinct
  3. 3. So what do humans, like us-- you and me--need to survive? What must we have inorder to continue living?We are not talking about your dog or cat, oryour computer games or cell phone.We are talking about those really importantthings you must have if you are to continueliving (things that would cause you to die ifyou didn’t have them).
  4. 4. Let’s think of some of those things. First,pinch your nose tightly and try holding yourbreath as long as you can.What happens? How long couldyou stay alive without breathing?So, what then is one ofthe things in nature weneed to survive?Yes, oxygen --without the oxygenin air we would quickly die.
  5. 5. •The air around us has many different gases including oxygen and carbon dioxide. •We need some of that oxygen from the air in order to survive (live).•Plants need carbon dioxide from the air tomake their food. (Important because theenergy stored in plants comes to us as foodthrough the food chain.)
  6. 6. This is an animation that helps explain the exchange ery/web_pages/gas.htm of gases that takes place between plants and animals.So air is one of those “things” that we musthave in order to live and... air is part of:
  7. 7. NatureNatureNature
  8. 8. Now think about running around outside atrecess when it is very hot. What Issomething you need as soon as you comeinside?
  9. 9. Yes, water is another thing we need to survive.Most of allwe need it todrink. A reasonably fit human could be expected to live only 3 to 5 days without water.
  10. 10. Although we couldperhaps live withoutthese, we also needwater to clean ourclothes, our bodiesand our homes.
  11. 11. And guess what, just like us.... plants cannot live without water.(Remember withoutplants, no food). Water is part of
  12. 12. NatureNatureNature
  13. 13. Something else we maynotice at school justbefore lunch time, isthat we arehungry.Along with oxygenand water, humansneed to have food.It seems that most humans can survive up to30-40 days without any food, so long as theyhave air and enough water to drink.
  14. 14. So there are at least three things that wemust have to survive, air, water and food.So far we discovered that air and watercome from nature, but what about food?Maybe we know that food comes from thestore, but where did it come from before itgot to the store? Food for thought?
  15. 15. Let’s think about where allthe stuff we eat comesfrom?
  16. 16. Where does milkcome from? Yes, from a cow.
  17. 17. Where do eggscome from? Yes, chickens lay them.
  18. 18. What about the different meats we findat the store?Where do they come from?
  19. 19. sausage sausage pork chopAll these meats come from a pig bacon
  20. 20. hamburgerAll these meats (beef) come from a cow meat loaf beef enchiladabeeftaco
  21. 21. chicken tendersfried chicken chicken Chicken soup echilladas All these meats come from a chicken
  22. 22. What about flour tortillas and bread?Where do they come from?
  23. 23. Flour tortillasand most breadis made withflour which ismade fromground upkernels ofwheat.
  24. 24. Ground up kernels of wheat. Kernels of wheat or wheat seedswheatwheat
  25. 25. What about our cereals?Where do they come from?
  26. 26. From a corn plant
  27. 27. From a plant called rice
  28. 28. From a plant called oatsOat seeds
  29. 29. Wheat seedsFrom a plant called wheat
  30. 30. What about pasta such as spaghetti andmacaroni—what are they made of? Main ingredients? Flour (wheat) and eggs (chickens).
  31. 31. What about that food we all love—sugar? Where does it come from?A plant called sugar cane
  32. 32. As you can see, our bread, pasta and cerealsall come from plants .We also eat many plant parts such as thefruits and vegetables seen in these pictures.
  33. 33. So, where does our food come from?
  34. 34. Our food comes from these natural sources:Yes, from plants and animals and they are all part of
  35. 35. NatureNatureNature
  36. 36. We also need something to cover ourbodies to protect ourselves from the coldand the sun.So what about our clothes?Where does the material our clothes aremade of come from?
  37. 37. Most jeans aremade out of
  38. 38. Many socks wewear are madeof
  39. 39. Many ofour T shirtsare madeout of
  40. 40. What is cotton?Cotton is a plant that grows all over the worldincluding Texas.
  41. 41. Harvestingcotton Cotton plant Raw bales of cotton Field of cotton Bale of cotton
  42. 42. Raw cotton can be changed into cottonthread which is then woven into cotton fabricand made into clothing. Raw cotton to cotton thread
  43. 43. People who live in coldclimates often wearwool socks, sweatersand coats.
  44. 44. Wool comes from sheep. Man shearing Sheep sheepA shornsheep Sheep wool
  45. 45. Raw wool can be changed into wool yarnwhich is used to knit wool clothes.
  46. 46. Many of ourshirts,jackets,socks andshorts aremade out ofpolyester ornylon.
  47. 47. Polyester or nylon clothes are made fromcrude oil. crude oil Crude oil is a yellowish black liquid found underground. It gives off a very strong smell or odor.
  48. 48. Crude oil can be changed into polyesterthread which is then used to make clothes.
  49. 49. What is Crude Oil and How was it Formed?Animal and plant remains are a large part of oil.The animals and plants lived in oceans 300-400million years ago. As these remains were coveredby mud, heat and pressure helped to change theseremains into crude oil.
  50. 50. Sometimes our clothes are not purecotton, pure wool or pure polyester ornylon.Like these sockswhich are madeup of 80% cottonthreads and 20%polyester thread.
  51. 51. Some of ourclothes may bemade our of all(100%) cotton.Some of ourclothes may bemade our of all(100%) polyester. Some are made of some polyester or nylon and some cotton or some polyester or nylon and wool.
  52. 52. So what have we learned here????
  53. 53. Cotton clothescome fromWool clothescome from SheepPolyester and Which comes fromnylon clothes the remains of Crude dead plants andcome from oil animals.
  54. 54. Our clothes come from either living ordead plants and animals which are part of Nature Nature Nature
  55. 55. Something else we couldn’t survivewithout is soil.Why is soil necessary to our survival?
  56. 56. We need soil to grow plantsWithout soil we would not have the plants weneed for food or the animals which eat theseplants. And like all those other things, soilcomes from:
  57. 57. NatureNatureNature
  58. 58. Because all these things we need tosurvive come fromNatureWe call them natural resources.Natural resources are those things innature man needs to survive.