Curated OER
Sieve of Eratosthenes
Students investigate numbers, ways of representing numbers, relationships among numbers and number systems. They comprehend the meaning of operations and how they relate to each other.
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End of the Year Math Terms
In this end of the year math test learning exercise, 4th graders complete problems including addition, division, measurement, decimals, and more. Students complete 22 problems.
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The Numbers Get Larger
Second graders examine how to use mental strategies for addition and subtraction. They look at part/whole strategies for multi-digit problems and define which one would be best used for a particular problem. They use tens frames to solve...
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Let's Take a Trip!
Sixth graders plan trip for family of four, and choose best travel plan by studying maps, considering different routes, and visiting Web sites to get airline and travel schedules.
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Activity #8 Simulation of Oil Spills
Young scholars conduct an experiment to simulate an oil spill and identify the characteristics of oil in water. They evaluate the effectiveness of various cleanup methods. They discuss the how to clean up an oil spill, and what causes...
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Gator Pie, Anyone?
First graders listen to a story, manipulate flannel board figures, and cut soft cookies and paper plates into equal parts.
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All About Ratios
Students investigate the use of multiplication and division of whole numbers to solve problems including equivalent ratios and rates.
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Using Basic Operations in Word Problems
Students review basic operations and use them to solve word problems. In this word problems lesson, students review basic mathematical operations such as addition, subtraction, multiplication, and division. Students then complete an...
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Math is Everywhere! Post Test
In this math test worksheet, students complete 10 multiple choice questions covering a wide variety of math concepts. An answer link is included.
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Subtract Mixed Numbers
In this subtracting mixed numbers practice activity, students sharpen their problem solving skills as they solve 6 story problems.
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Square Numbers
Fourth graders use square tiles to help them explain the concept of square numbers.
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Let's Go Consumer Shopping
Second graders rotate through various centers designed to practice consumer math skills. They complete a task card at stations simulating consumer transactions that would take place at toy store, grocery store, restaurant or school store.
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Subtraction and Addition Word Problems Made Easy
Third graders create addition and subtraction word problems for a partner to solve using marbles. They explain whether the problem is an addition, subtraction, "take away", "have and need", compare or "what is the rest" type problem.
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Discovering Perimeter
Twelfth graders apply perimeter measurement to items found in newspapers and calculate the cost in terms of feet or yards. They share answers and explanations with classmates.
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The Three Pigs
Second graders design and construct homes for the three pigs. Each of the homes is made and filled with patterns that we explore. They continue a sequential pattern and describe a rule for this.
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Ten in the Bed
First graders share the story "Ten in the Bed". They rewrite the story so that the initial character is calling others to bed. There was one in the bed and the little one said, "Come to bed, come to bed." There were two in the bed and...
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The Number Partner
First graders study number pairs and identify number pairs that sum to numbers from 10 to 30. They use number pairs to solve addition and subtraction problems. They make sensible estimates and check the reasonableness of answers.
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Skip it to multiply it
First graders make sensible estimates and check the reasonableness of answers.
They make up, tell and record number stories up to 9 about given objects. They skip count in twos, threes and fives.
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Go Figure! Using Percents in the Real World
Sixth graders solve sales tax problems. In this solving sales tax problems lesson, 6th graders find the sales tax on various items. Students are given a list of expenses that a family spent on vacation before taxes. Students determine...
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The Hundreds Board
Students explore the concept of multiples and use a hundreds board to add numbers and then graph them. Afterward, they use the sieve of Eratosthenes to identify prime numbers and discover how numbers change when you add or subtract by ten.
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Ratio, Proportion And Percent Worksheet
In this math worksheet, students examine the answers to a formal assessment focusing on the concepts of ratio, proportion, and percent.
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Adding Integers Using an Integer Line
In this integers worksheet, students use integer lines to add the positive and negative numbers. They can show the answers online.
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Subtracting Integers
In this subtracting integers worksheet, students use 9 integer lines to help them solve 9 math problems that require them to subtract positive and negative numbers.
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Misconceptions: Multiplications Can Increase or Decrease a Number
In this misconceptions of multiplication activity, students read questions, then common misconceptions and their corrections and complete follow-up exercises.
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