EDC Cake Chemistry - NPASS2

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MAKING UP YOUR OWN RECIPEEXPLORATION 1MATERIALSFor Each Team• 8 clear plastic cups (6- to 7-ounce)• 8 plastic spoons* (standard)• 1/2 cup flour• 1/2 cup sugar• 1/2 cup baking powder• 1/2 cup milk• 1/2 cup cooking oil (any type)• 1/2 cup liquid egg or egg substitute* (unflavored) (alternative: 1whole egg, beaten)• 1 small aluminum cake pan* (approximately 4 inches indiameter) or mini loaf pan• 1 12-inch ruler• 1 sheet of aluminum foil (12 inches long)• 1 Explorers’ Sheet, including the Our Recipe chart and MixingWet and Dry Ingredients chartShared• permanent markers• additional amounts of all ingredients• newspapers and sponges (for cleanup)• access to an oven (or toaster oven or cardboard box oven)• optional: trays or stiff sheets of cardboard(8-1/2 inches x 11 inches)For the Program Leader• toothpicks• 1 eyedropper• vanilla extract*Additional information is available under Special Notes AboutMaterials (page xvi) for those materials noted with an asterisk.PREPARING FOR THE EXPLORATION• Before the start of each exploration, place newspapers onthe tables. This will make cleanup easier and faster. Also,the explorations should take place near a sink so that water canbe accessed easily for some of the explorations and for easiercleanup. If this is not possible, you will need to provide somebuckets or large containers of water so that any spillage orcleanup can be done with a minimum of work.1EXPLORERS’ SHEET1GUIDING THE EXPLORATION1BACKGROUNDExplore It!5
MAKING UP YOUR OWN RECIPEEXPLORATION 11EXPLORERS’ SHEET1GUIDING THE EXPLORATION1BACKGROUNDThe cardboard box 1oven is the same asthat presented in theExplore It! project“Heating a House andan Oven.” You willhave to use a 100-wattbulb to get thetemperature highenough to bake a cake(350º). However, thiskind of oven can onlyhandle two containersat a time, so you mayhave to make severalof them. Consult thecurriculum guidefor this project toconstruct one ofthese ovens.• Label a set of cups for each team with a permanent marker(Figure 1). Create a set of six cups for each team filled withabout ? cup of each of the ingredients listed above. You candecide to put more or less of the ingredients in these cups.Figure 1A set of cups for one team.• If you are preparing the materials long before the session, coverthe cups with paper or some other material to keep anythingfrom getting into the cups before students use them. To make iteasier for handing out to each team, you could place each set ofmaterials in some kind of tray or on a sheet of stiff cardboard.• You will need access to an oven to bake the small cakes.Alternatives include a toaster oven or a cardboard box oven. 1• Turn on your oven(s) before the start of each session and set thetemperature to 350º.• Make one copy of the Explorers’ Sheet, including the OurRecipe chart and Mixing Wet and Dry Ingredients chart, for eachteam. However, wait to pass them out until after you haveexplained the task at hand.SAFETY: Some children may be allergic to eggs or someof the other ingredients used in this project. Make sure tocheck with parents before beginning.INTRODUCING THE EXPLORATIONStart off by asking the children if they have done any baking athome with their parents. Specifically:• Have they helped their parents or watched them make a cakefrom scratch?• What do they remember about the amount of ingredients in therecipe and how it was baked?• What ingredients do they recall were needed to bake the cake?• If they haven’t participated in cake baking at home, what do theythink the ingredients are that make up a cake?6 <strong>EDC</strong>’s Center for Science Education
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EDC Cake Chemistry - NPASS2

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