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Lesson Plan
Curated OER

Modeling Prime Factorization

For Teachers 9th - 12th
High schoolers 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. High...
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Worksheet
Curated OER

Identify Numbers

For Students Higher Ed
For this identify numbers worksheet, students identify prime, composite, perfect, deficient, and abundant numbers listed on a one-hundred board. This two-page worksheet contains one-hundred numbers on each page.
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Lesson Plan
Curated OER

Solving Math Problems In the Real World

For Teachers 5th - 8th
Upper elementary and middles schoolers discuss and solve real world applications of math. They use formulas for volume and percents to answer real world questions. In the second part of the instructional activity, groups write and solve...
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Worksheet
Curated OER

Factors and Prime Factorization

For Students 6th
In this factors and prime factorization worksheet, 6th graders use examples to find all the factors for six numbers, then write six more numbers as products of prime factorization.
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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 - 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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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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Worksheet
Helping with Math

Factors with Prime and Composite Numbers (2 of 2)

For Students 4th - 6th Standards
Ten two-digit numbers are listed for fourth graders to factor. Once they have factored each, they circle whether the original number is prime or composite. If you click on the "Print Worksheet" button, the printable spreads the problems...
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Worksheet
Curated OER

Practice in Prime Factorization

For Students 7th - 8th
In this practice in prime factorization worksheet, students solve 8 columns of 10 problems each about prime factors for two and three digit numbers, plus two review problems in each column.
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Worksheet
Curated OER

Primes and Triples

For Students 12th - Higher Ed
In this primes worksheet, students list three triples that are generated by formulas. They explain how to generate these formulas and discuss the Pythagorean Triples. This one-page worksheet contains one multi-step problem.
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Worksheet
Curated OER

Factorization

For Students 8th - 10th
In this algebra worksheet, students factor number using their prime factors. They use a factor tree to help them find their prime numbers as they factor out. There are 20 factoring problems with an answer key.  
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Worksheet
Math Mammoth

Factoring and Primes 2

For Students 4th - 5th
In this factoring learning exercise, students read about prime factorization, factor using factor trees, build numbers from primes and complete a challenge puzzle.
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Lesson Plan
Curated OER

Twenty Questions: The Hundred Chart

For Teachers 2nd - 6th Standards
Use the 20 Questions game to practice math vocabulary and number properties! Project a hundreds chart and hand one out to learners. Ideally, give them counters (beans would work well) to mark off the chart so you can play multiple times....
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Lesson Plan
Curated OER

Prime Factors

For Teachers 5th
Fifth graders review the concept of prime factorization. Then, they use the rules for divisibility and other notions to find the prime factorization of unfamiliar numbers. They solve problems in a whole class setting.
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Worksheet
Curated OER

The Age-Old Problem

For Students 9th - 12th
In this word problem worksheet, students solve 1 short answer word problem. Students determine the age of two boys given information such as their ages are the product of prime numbers. 
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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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Activity
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Curated OER

Mathematical Treasure Hunt

For Teachers 3rd - 8th Standards
The hunt is on! Young mathematicians follow clues and complete a series of ten math puzzles as they try to crack Dr. Integer's code and find the location of his hidden treasure.
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Assessment
Los Angeles County Office of Education

Assessment For The California Mathematics Standards Grade 4

For Students 4th Standards
Have scholars show what they know with a 20-page assessment aligned to the California State Standards. The test covers concepts such as large and whole numbers, all four mathematical operations, fractions, decimals, geometric figures,...
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Lesson Plan
Curated OER

Transition to algebra

For Teachers 9th - 10th
Students recognize the difference between a prime and a composite number.  In this prime and composite number lesson, students  use a factor tree model to show prime factorization. Students participate in a bingo activity. Students...
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Worksheet
Curated OER

Number Theory Worksheet 2: The Sieve of Eratosthenes

For Students 4th - 6th
in this number theory worksheet, students use the Sieve of Eratosthenes to find all primes up to the number 100. Students follow the directions to circle primes and multiples on the hundred chart.
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Worksheet
Curated OER

Prime Factorization

For Students 5th - 9th
In this prime factorization worksheet, students list the prime factors of the 2 digit numbers given to them. Students complete 9 problems.
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Worksheet
Curated OER

Sets

For Students 4th - 5th
In this number sets worksheet, students complete a crossword puzzle in which the correct numbers are entered to answer the clues about even, odd, prime and natural numbers.
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Worksheet
Curated OER

Prime Factorize

For Students 5th - 6th
In this prime factorization worksheet, students prime factorize the nine given numbers on a line. Each number goes to the hundreds place.
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Worksheet
Curated OER

Grade 5 Math: Factorization 2

For Students 5th
In this grade 5 math worksheet, 5th graders write 8 numbers as the product of their prime factors, using exponents to show multiples of the prime factor when needed.

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