Five pages of fractions in the kitchen. Page 1 has two recipe cards: students find which ingredient uses the most or fewest cups, how many more cups of one than another, and how much in all (like denominators on the pancake card, unlike denominators on the muffin card). Page 2 doubles a cookie recipe and triples a lemonade recipe in tables: multiply each amount, then write it in simplest form (2 × 3/4 = 6/4 = 1 1/2). Page 3 finds half of an amount by shading an area model, then halves a banana bread recipe (2 eggs make 1 egg). Page 4 finds what to multiply by when a recipe for 4 serves 8, 12, 2 or 6 people, scales a smoothie recipe to serve 2 and 6, and solves two stories with mixed numbers. Page 5 picks the two measuring cups that make an amount like 5/6 cup, then uses a shopping list to find what a bake sale batch of 24 muffins costs, the cost of one muffin, the money taken in and the profit. Each table and set of problems starts with a worked example.
Bring a real recipe card and ask what would change to feed the whole class. Before page 2, measure 3/4 cup of rice twice into a bowl and check that it makes 1 1/2 cups. Before page 3, fold a paper rectangle into thirds, shade 2/3, then fold it in half the other way to see half of 2/3. Page 5 is a good start for planning a real class bake sale: list the ingredients, find the prices and work out a fair price for each item.
Pick a family recipe and double or halve it together, writing each new amount before you measure. Ask which measuring cups you would use for an amount like 3/4 cup or 1 1/3 cups. At the store, add up the cost of the ingredients and work out what one serving costs.
This pack supports the following Common Core State Standards for Mathematics:
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A 5-page recipe fractions pack for 4th and 5th grade. Read a pancake recipe card and a muffin recipe card to find the most and fewest cups, how much more and how much in all, with like and unlike denominators. Double a cookie recipe and triple a lemonade recipe, halve amounts on area models and in a banana bread recipe, and scale a smoothie to serve 2 and 6 people. Choose two measuring cups that make an amount, then find what a bake sale batch costs, the cost of one muffin and the profit. Every page comes in color and in black and white. Answer keys included.
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