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Worksheet
Curated OER

Eratosthenes SieveĀ¦

For Students 6th - 8th
In this math worksheet, students find the prime numbers through going through the factors in sequential order. The answers are used to create the words at the bottom of the page.
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Lesson Plan
Curated OER

Prime Factorization

For Teachers 6th - 8th
In this math worksheet, students find the solutions to the problems while looking for the prime factors. There is an example at the top of the page.
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Worksheet
Curated OER

Math Worksheet: Factoring

For Students 4th - 5th
In this math factoring worksheet, students write a multiplication equation with prime numbers that equals the given product. There are no examples or explanations of the math vocabulary. There are18 problems to solve.
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Lesson Plan
Curated OER

Prime and Composite

For Teachers 6th
Sixth graders practice implementing manipulative's to assess composite and prime numbers. They formulate representations of rational numbers in a variety of ways including graph paper, sieves of Eratosthenes and multiple worksheets.
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Lesson Plan
Curated OER

Modeling Prime Factorization

For Teachers 9th - 12th
Students model factors using tiles and grid paper. They differentiate between prime and composite factor trees. Students illustrate prime factorization using factor trees. They are given 12 tiles or cut-out paper squares. Students...
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Lesson Plan
Curated OER

Prime and Composite Numbers

For Teachers 8th
Eighth graders explore prime and composite numbers. Given division problems, they use color tiles to model solutions to division problems. Through activities and observation, 8th graders discover the meaning of prime and composite...
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Lesson Plan
Curated OER

Prime and Composite Numbers

For Teachers 6th
Sixth graders identify prime and composite numbers and complete an activity problem. Given a 100 chart, they follow directions to create a prime number chart. In groups, 6th graders play a "Prime Take Away" activity to reinforce prime...
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Lesson Plan
Curated OER

Prime and Composite Numbers

For Teachers 5th
Fifth graders use prime factorization to identify prime and composite numbers. They use cubes to find factors. In groups, 5th graders draw rectangular arrays to discover prime numbers under 100.
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Lesson Plan
Curated OER

Prime and Composite Numbers, Prime Factorization

For Teachers 6th - 8th
Students research prime and composite numbers. With a partner, students use graph paper to draw rectangles of various sizes. They list the dimensions of rectangles and discuss how the dimensions relate to the factors of each number....
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Lesson Plan
Curated OER

Prime Factorization

For Teachers 6th
Sixth graders participate in a lesson that focuses on the concept of finding the prime factorization of a number. They write the answer using exponential notation. Students play a game of Bingo to keep engaged during the lesson.
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Lesson Plan
Curated OER

Prime and Composite Numbers

For Teachers 6th
Sixth graders investigate the concept of prime and composite numbers. They use a review of multiplication to help explain factoring. Students are taught the definition of a prime and composite number and then practice independently.
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Lesson Plan
Curated OER

Prime and Composite Numbers

For Teachers 5th
Fifth graders investigate the concepts of composite and prime numbers. They factor different numbers and determine the number of factors for each. Based upon this information the number is declared prime or composite.
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Lesson Plan
Curated OER

Prime Time

For Teachers 5th - 8th
Students participate in activities to investigate properties of numbers. They identify prime and composite numbers and determine the patterns associated with these numbers. They answer questions associated with each activity.
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Lesson Plan
Curated OER

Prime Time

For Teachers 4th - 6th
Students use the provided 100 chart in order to do different activities with prime numbers.
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Lesson Plan
Curated OER

Prime Numbers and Factors

For Teachers 4th - 6th
Students determine factors of numbers to 100 and identify prime factors; students differentiate prime and composite numbers by the factors of the numbers.
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Lesson Plan
Curated OER

In Your Prime

For Teachers 3rd - 4th
Students study how to find prime numbers. They investigate the teachings of the mathematician Eratosthenes and apply his theory of prime numbers less than 100.
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Lesson Plan
Curated OER

Prime Real Estate

For Teachers 4th - 6th
Students analyze and discuss prime numbers and the Sieve of Eratosthenes, a procedure to sort out prime numbers. They identify the prime numbers from 1-100 by eliminating all the multiples of the first four prime numbers, and circle what...
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Lesson Plan
Curated OER

Prime Time

For Teachers 7th
Seventh graders practice determining the prime factorization of composite numbers. They create Christmas factor trees for prime numbers greater than 100. They decorate their final products with markers, crayons, colored pencils, glitter...
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Lesson Plan
Curated OER

Prime and Composite

For Teachers 6th - 8th
Students explore prime and composite numbers. For this prime and composite numbers lesson, students discover the difference between prime and composite. Students practice as a class then do independent practice.
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Lesson Plan
Curated OER

Paper Pool

For Teachers 5th - 8th
Students analyze the measurements of rectangles. In this analysis lesson plan, students will investigate patterns by looking at ratios. Students will also hypothesize the probability of a ball going into a certain pocket when playing...
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Lesson Plan
Curated OER

Factors, Divisibility, and Relatively Prime

For Teachers 7th
Seventh graders explore the concept of divisibility. In this divisibility lesson, 7th graders use divisibility rules to find factors of numbers. Students create foldables to illustrate divisibility rules.
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Lesson Plan
Curated OER

Prime and Composite Numbers

For Teachers 5th - 6th
Young scholars identify prime and composite numbers. In this prime and composites lesson, students are given the rules for identifying prime and composite numbers by the teacher, who gives examples on the board. Individuals then complete...
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Worksheet
Curated OER

Counting Puzzle

For Students 4th - 5th
In this number crossword puzzle worksheet, students use the clues about factors, multiples, prime numbers, and odd numbers to complete the crossword puzzle.
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Worksheet
Curated OER

Factors

For Students 7th
In this factors instructional activity, 7th graders solve and complete 20 different problems for determining the factors of each number listed. They find all the factors for each number given. Students divide each whole number by another...