Curated OER
Daily Time Ratios
Students track and record how much time they spend on each activity. In this spreadsheet instructional activity, students apply different functions using Microsoft excel to format cells and calculate the sum of their total time spent...
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Comparing Ratios
Students solve problems using ratio and proportion. In this math comparison lesson, students identify methods used to solve and compare ratio and proportion in the real world. They apply criss cross multiplying to solve their problems.
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Shots, Standings, and Shopping
Rates and ratios can easily be applied to real-world situations. Learners explore a series of websites in order to procure comparable data. They define ratios and rates, view videos, and use the internet to explore how ratios and rates...
Curated OER
Dragonfly
The speed of a dragonfly brings math into the real world as your learners collaboratively see the value in calculating unit rates in direct proportion problems. This six-phase lesson plan encourages you, as the teacher, to only ask...
Illustrative Mathematics
Security Camera
A different-than-normal problem that allows learners to practice their reasoning to find an answer. The problem bases itself off a graph drawing of a store that needs to install security cameras. The challenge is to find which placement...
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Balancing the Scales: Understanding Ratios
Students are introduced to the concept of ratios. In groups, they convert sets of numbers into a ratio. After practicing, they use the ratios and proportions to solve story problems. They also calculate map distances and discover map...
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Proportions
Students study proportions. In this mathematics lesson, students measure their body length, head length, and ratio of their body, write their findings on a group chart, and discuss how a person's head size or arm span are in proportion...
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Proportions
Seventh graders participate in a lesson that focuses on having them solve different proportions. The lesson includes an example that the teacher can work from in order to deliver direct instruction.
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Solving Problems with Proportions
Seventh graders explore the concept of proportions. In this proportion lesson, 7th graders play a review game involving whiteboards. Students work in groups to solve a given proportion the fastest. Students also work in pairs to solve...
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Proportion Problems
Seventh graders explore the concept of proportions. In this proportions instructional activity, 7th graders determine which offer is the better deal given two pizza offers. Students use cross products to solve proportions. Students...
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Recipes and Ratios
Students use ratio and proportions to adjust recipe size. In this middle school mathematics lesson, students investigate Native American food and adjust the recipe size for said foods to the number of servings needed to feed the...
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Are You a Golden Ratio?
Students explore the concept of the golden ratio in nature and architectural design. They discuss examples such as petals on a sunflower and the Parthenon. In small groups they take turns measuring their body parts to find a golden ratio.
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A Matter of Proportion
Middle schoolers measure the relative heights of the mosaic giraffe and its trainer and compare their proportions to an actual giraffe and zoo trainer.
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Applications, Proportions, and Problem Solving
In this math worksheet, students find the solutions to the problems involving proportions. They also compare the similar triangles.
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60-30-10
Middle schoolers use ratios and proportions to represent quantitative relationships as they investigate the concept of how percentages are used by designers. Students decorate the same room using three different percentages of colors.
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Old Glory
Students utilize mathematical concepts such as: measurement, ratio and proportion and geometric probability to analyze the components of the U.S. Flag. They collect, organize and interpret data by constructing charts, tables and graphs...
EngageNY
Ratios of Fractions and Their Unit Rates 2
Remodeling projects require more than just a good design — they involve complex fractions, too. To determine whether a tiling project will fit within a given budget pupils calculate the square footage to determine the number of tiles...
Curated OER
Worksheet 2: In/Out Table of Returns of Corn Yields
For this function worksheet, students determine the gross price earned per acre of crops planted. They recognize ratios and proportions as they determine the yield of each crop.
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Gears and Proportions
Students explore gears. In this simple machines and ratio instructional activity, students view a video clip in which front and rear bicycle gears are explained. From a set of gear combinations and gear ratios, students identify high...
Illustrative Mathematics
Tax and Tip
Finding out how to calculate tax and tip is a valuable skill that all young adults should be able to do without a calculator. Learners are given a bill and asked to calculate the tax, tip, and total amount. Calculations can be exact or...
Illustrative Mathematics
Finding a 10% increase
A quick problem to test your mathematicians' knowledge on percent increase. Two different solutions are provided, mental math and computing. Ask your learners to include a description of what they did to supplement their answer.
Curated OER
Art Class, Variation 2
Given a set of six paint mix ratios, artistic mathematicians produce an equation that relates the number of parts for blue paint to parts for yellow paint resulting new shades of green.
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Paper Pool
Students explore ratio and proportion, GCF, and LCM. In this middle school mathematics lesson plan, students play an interactive Paper Pool game that provides an opportunity to increase their understanding or ratio, proportion, GCF, and...
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Count The Letters
Students perform activities involving ratios, proportions and percents. Given a newspaper article, groups of students count the number of letters in a given area. They use calculators and data collected to construct a pie chart and bar...
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