Curated OER
Triangle Sums
Fourth graders determine a way to place numbers in the nine circles that are arranged in a triangular pattern so that each side has an equal sum. They use each number once and practice adding single digit numbers.
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Perimeter
In this perimeter worksheet, students calculate the perimeter of rectangles. This one-page worksheet contains 6 perimeter problems.
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Geometry: Calculating Perimeters
In this perimeter worksheet, students find the perimeter of 3 polygons. Students find the perimeter of irregular polygons given various side lengths.
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Fraction Subtraction Worksheet 1
In this mathematics worksheet, students subtract the second number fraction from the first one. Then they write their answer in the space provided. There are 12 problems to solve on the sheet.
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Part-Part-Whole
In this mathematics worksheet, students identify a whole number as a combination of two smaller parts. They use counters to help them add various combinations of numbers.
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Making Change
Second graders explore how to incorporate a new type of technology, the cash register and/or a calculator, as a motivational tool for solving real life problems. They practice estimating money and counting back change from $20.00.
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Who Wants to Carry a Million?
Young scholars, in groups, determine the volume of a box large enough to hold a million dollars. They calculate the dimensions of a bill and the volume of the money.
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Probability and Geometry
Students explore the ways Geometry can help solve probability problems. Students describe platonic solids and practice calculating probability using an online resource. They construct dice with various numbers of sides to demonstrate...
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March of the Dividing Ant
Students inspect divisibility rules. In this divisibility rules lesson, students study the relationship between factorization and the divisibility rules for 2, 3, 5, 6, 9, and 10. Students read One Hundred Hungry Ants and A Remainder of...
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Subtract Positive and Negative Integers
Review the concept of subtracting positive and negative integers. Learners review the rules for subtracting integers, use manipulatives to visualize the process, and complete an assessment.
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Solving Equations Using Two Operations
Need more detail in showing your class how to solve two-step equations and proportions? This lesson plan outlines the steps young mathematicians need to solve simple equations and check their results.
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Conversions: Metrics Made Easy
Students convert standard units of measurement to metric units using tape measures, meter sticks, rulers, and online conversion calculators.
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A McTrip Back In Time
Students pretend they are time-travellers and travel back to 1954 to a McDonald's Restaurant to see how prices have changed. They need to add and subtract money with regrouping.
Alabama Learning Exchange
Investigating Friction
Young learners explore friction. They view a video or DVD (bibliography provided) and define terms related to friction, and work in groups to experiment with the effects of friction on speed and motion using ramps and toy cars.
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Adding and Subtracting with Tenths
In this adding with tenths worksheet, students add and subtract numbers whose decimals go to the tenths place. Students complete 10 problems total.
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Three Circles II
Fourth graders practice a variety of strategies when investigating what happens when they put various numbers into circles of a configuration: they express a fraction as a decimal, write and solve problems involving decimal...
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Adding in Parts
Third graders are able to split whole numbers into parts. They make numbers up to a tidy number. Students add and subtract tenths to make a decimals number into a whole number. They are able to add whole numbers up to three digits.
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Go Negative
Fourth graders advance to new levels in the lesson we're dealing with here. It is the fourth of a sequence of six dealing with the same theme. These develop from Level 2 to Level 5. In the process they involve number concepts at the...
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Commutative, Associative, and Distributive Properties
Middle schoolers explore the concept of the associative, commutative, and distributive properties. In the associative, commutative, and distributive properties lesson, students discuss real world examples of each property. Middle...
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Pipe Music With Decimals
Students discuss strategies for solving problems with decimals. They find the sum of problems through recognizing place value and by practicing adding numbers both vertically and horizontally. They read and solve real life word...
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It Has to Balance
Second graders use a price list and balance sheet to plan for a day of fun at the beach. They consider expenses, income, and balancing of resources.
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More Pizzas and Things
Students are introduced to the problem by playing a guessing game of "I am a number, which is half of 6 and 6, what am I?" They explain their answers and see if anyone else had an alternate solution checking for reasonableness.
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The Ice Cream Shop
Second graders read books about ice cream and plan an ice cream sundae party for the class. They research ingredients and determine how much the party cost each student. They hold a mock opening for an ice cream store and have their party.