But they do need to know that air is made up of a number of substances. Students at this point do not need to know those amounts. The air you exhale is approximately 79% nitrogen, 16% oxygen, and 5% carbon dioxide. Note: To be accurate, the air you breath is approximately 79% nitrogen and 21% oxygen. Your cells need oxygen to come in and carbon dioxide to go out. You might even compare it to bringing in bags of groceries for food, and taking bags of trash out of the house. You breathe in order to give your cells the oxygen they need, but also to exhale all that carbon dioxide they made. The carbon dioxide is made by your cells. You inhale oxygen and exhale carbon dioxide. The volume of air is about the same, but the chemical composition is different. Seems like we're breathing the same amount in and out, doesn't it. Let them take several breaths in and out. Put the Information Piece with the picture of human lungs on the card to the left of the tree. So what do we do with the oxygen that plants make? We breathe it in. Then they will be ready to find out what happens to the oxygen and glucose that the plants make. They can play the game to see how quickly they can form oxygen and glucose molecules from the water and carbon dioxide. Start this lesson by reviewing the photosynthesis lesson with your kids. Photosynthesis in the leaves of the plant. Oxygen (0 2) and starch (C 6H 12O 6 ) are produced by Starch (also called glucose or sugar or carbohydrates).While you are waiting for the pickling lime and water to settle, you can present the information below. Carbon is recycled by plants and animals and is necessary for survival.īefore presenting the information in the Carbon Cycle MatchCard, do the first part of the project listed below. (It has a total of six electrons, two in the inner shell.) Carbon is called the backbone of living material. This lesson demonstrates one of the important ways that plants and animals interact in their environment.Ĭarbon is an atom that has four electrons in its outer shell. Find more information on MatchCard Science below. This is MatchCard #10 of the Botany Unit Study. MatchCard Information Pieces are placed on the MatchCard to demonstrate oxygen and carbon dioxide in respiration and the synthesis and breakdown of starch. Classical Childrens Books Find A Book Your Child Will Love
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