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Lesson Plan
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Ratios, Proportions, and Cross-multiplication

For Teachers 6th - 8th
Middle schoolers use cross-multiplication to find the unknown respiration rate of an astronaut. In this multiplication lesson plan, students also use the same process to find missing values in proportions.
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Lesson Plan
Curated OER

Buying My First Car

For Teachers 5th - 12th
Learners pretend they are about to buy their first new car. They must do all the calculations necessary to estimate the cost of purchasing the car. They see that the math they learn in school really does have real-life applications.
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Lesson Plan
Curated OER

Tortillas

For Teachers 6th - 8th
Students convert recipes for tortillas. They calculate the amounts of ingredients as they convert recipes and write an explanation of the task to demonstrate their calculations. After reviewing their calculations, they demonstrate how...
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Worksheet
Curated OER

Math Vocabulary Review

For Students 5th - 6th
In this math vocabulary learning exercise, students read a set of 15 math related definitions and write the words being defined. A reference web site is included for additional activities. 
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Lesson Plan
Curated OER

Eating on a Budget

For Teachers 5th - 6th
Young scholars are "given" $25.00 to spend at a restaurant. Using the Internet, they must "order" a complete 4 course meal while staying within their budget.
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Worksheet
Curated OER

Think of a Number

For Students 4th - 6th
In this math learning exercise, students engage in a mental math activity. Student think a number and follow several computations with that number and always come up with the answer 9. Students discuss why this happens.

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