Curated OER
Basic Sense
Fifth graders add fractions. After a class discussion on real life application of fractions, the teacher uses fractions strips to model adding fractions. In pairs, 5th graders model adding fractions by drawing diagrams. They justify...
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Tortillas
Learners 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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Making Choices
Students determine that limited resources require choices. They study the basic concept of a budget and use addition, subtraction, multiplication, and division (with whole numbers, fractions, decimals and/or percents, mixed numbers) to...
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Zeros and Blackbirds
Fifth graders convert kilometers to miles and calculate the range that historical aircraft can travel. They choose destinations by distance that can be traveled without refueling.
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Peace Pie
First graders review peacemaking strategies by identifying their capacity of creating and promoting peace within their classroom, home, community, and world. Fractions are introduced through the making of a "peace pie."
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Revamped Recipe
Fifth graders engage in a tasty lesson which assist them with proportional measurements. They use a given recipe written for 12 servings, and use a chart to determine the ingredient amounts for 30 servings (or number of students in class).
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Math - Design a Ship
Students design a ship. They calculate square footage and draw their ship to scale. They build models of their ships.
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Parting Ways
Students become part of the solution as they practice figuring percents. The number of men versus women present in the room and their heights can be used to form the basis of this investigation.
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Comparing Candy Bars
Eighth graders identify that a ratio is a comparison of two numbers and that a proportion is an equation that equates two ratios. They identify the extremes and means of proportions, as well as the product of the extremes equals the...
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Charting The Progress of New Horizons
Learners explore the long distances and timescales involved in space travel. They track the progress of the New Horizons spacecraft and access the New Horizons website to discover the distance of the spacecraft from the Sun, and then...
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Multiplying Decimals and Mixed Numbers
Students multiply decimals and/or mixed numbers. They explore the effects of multiplying decimals and mixed numbers. They practice estimating answers when a number is multiplied by a decimal or mixed number.
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Piece of the Sky: Introduction for Making S'COOL Observations
Young scholars observe and discuss cloud cover. They identify percent of cloud cover, calculate cloud cover by fraction and convert to a percent, and compare their models with the current real sky cloud cover.
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Savings
Students investigate the different ways to save money and the reasons for doing so. They use addition, subtraction, multiplication, and division (with whole numberrs, fractions, decimals, and/or percents, mixed numbers) to solve...
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What Is Money?
Learners discuss the difference between earned and unearned income. They use addition, subtraction, multiplication, and division (with whole numbers, fractions, decimals and/or percents, mixed numbers) to solve real-world math problems...
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Calculate the Answer
Students solve basic multiplication or addition facts using a calculator and product cards. They draw a card, read the sum or product, and press single digits on the calculator to display the number on the card.
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Fraction Card Shark
Second graders explain the relative size of fractions using symbolic and concrete representations. Groups of four students play a game which uses cards and unifix cubes. The game helps them get a visual understanding for the 'size' of...
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Cutting the Wood
Students demonstrate and describe the effect of multiplying or dividing by a fraction less than or greater than one. They create and explain a variety of equivalent ratios that represent a given situation. Students draw a picture of...
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Practicing Arithmetic
Students practice single operation arithmetic ranging from single digit addition to long division of decimals or real numbers using Graphit. They use data sets and rules to graph ordered pairs.
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Squirt
Fourth graders using the idea of "how many more squirts" fill a container to develop multiplicative thinking. They also investigate the idea of conservation of volume when working with oddly shaped containers. They attempt to use...
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Mixing Colours
Students explore ratios and their relationships to fractions. They explain the process of identifying ratios and describe their comparison. Students write ratios as fractions and by using colons. They convert the ratios to percents.
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Rabbits
Students review what they think doubling means and double numbers mentally, for example, 5, 12, 16. They share their solutions and discuss how they doubled. They work together on a problem that is beyond mental working and solve...
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Outnumbered by the English
Students examine how the English eventually outnumbered the Native Americans and gained control. They participate in a demonstration using circles and fractions to discuss how the Native Americans were forced off their land, and examine...
Pennsylvania Department of Education
Introducing the Coordinate Plane
Fifth graders practice using estimation. In this estimation lesson, 5th graders add, subtract, multiple, and divide using whole numbers, fractions, and decimals. Students decide upon instances when estimation is more appropriate than...
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Ordering Parts of a Whole
Students review and discuss the task to be completed and how the rubric is used to evaluate it. They each get 6 paper rectangles, 3 of one color and 3 of another color. They cut the rectangles in half two different ways. They repeat the...