IM 6.2.5 Lesson: Defining Equivalent Ratios
Find how many dots are in the applets below and explain how you got to the answer.
Dot Pattern 1:
Dot Pattern 2:
Here is a recipe for tuna casserole.
Ingredients
Instructions
Combine the pasta, tuna, soup, and half of the cheese. Transfer into a 9 inch by 18 inch baking dish. Put the remaining cheese on top. Bake 30 minutes at 350 degrees. During the last 5 minutes, add the French fried onions. Let sit for 10 minutes before serving.
What is the ratio of the ounces of soup to the cups of shredded cheese to the cups of pasta in one batch of casserole?
How much of each of these 3 ingredients would be needed to make twice the amount of casserole?
How much of each of these 3 ingredients would be needed to make half the amount of casserole?
How much of each of these 3 ingredients would be needed to make five times the amount of casserole?
How much of each of these 3 ingredients would be needed to make one-fifth the amount of casserole?
What is the ratio of cups of pasta to ounces of tuna in one batch of casserole?
How many batches of casserole would you make if you used the following amounts of ingredients: 9 cups of pasta and 18 ounces of tuna?
How many batches of casserole would you make if you used the following amounts of ingredients: 36 ounces of tuna and 18 cups of pasta?
How many batches of casserole would you make if you used the following amounts of ingredients: 1 cup of pasta and 2 ounces of tuna?
The recipe says to use a 9 inch by 18 inch baking dish. Determine the length and width of a baking dish with the same height that could hold twice the amount of casserole.
The recipe says to use a 9 inch by 18 inch baking dish. Determine the length and width of a baking dish with the same height that could hold half the amount of casserole.
The recipe says to use a 9 inch by 18 inch baking dish. Determine the length and width of a baking dish with the same height that could hold five times the amount of casserole.
The recipe says to use a 9 inch by 18 inch baking dish. Determine the length and width of a baking dish with the same height that could hold one-fifth the amount of casserole.
The ratios and are equivalent ratios. Is the ratio equivalent to these? Explain your reasoning.
The ratios and are equivalent ratios. Is the ratio equivalent to these? Explain your reasoning.
Give two more examples of ratios that are equivalent to .
How do you know when ratios are equivalent and when they are not equivalent?
The ratios and are equivalent ratios. Write a definition of equivalent ratios.
- the title “Equivalent Ratios”
- your best definition of equivalent ratios
- the ratio your teacher assigned to you
- at least two examples of ratios that are equivalent to your assigned ratio
- an explanation of how you know these examples are equivalent
- at least one example of a ratio that is not equivalent to your assigned ratio
- an explanation of how you know this example is not equivalent