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Worksheet
Curated OER

Prime Numbers

For Students 4th - 6th
For this prime numbers worksheet, students read facts and complete comprehension activities. In this graph construction and drawing worksheet, students complete two activities.
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Assessment
Mathed Up!

HCF, LCM, and Product of Primes

For Students 6th - 8th Standards
Give the class a prime example of using prime numbers. After reviewing prime factorization of numbers with the video, pupils use their knowledge to determine greatest common factors and least common multiples in the worksheet. The...
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App
Third Rail Games

Factor Samurai

For Students 3rd - 5th Standards
Master composite and prime numbers with this fast-moving game. Using your sword, slice those composite numbers and watch them break up into factors. Slice again if those factors are composite. However, watch out for prime numbers,...
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Lesson Plan
Curated OER

Smart Cookie Factors

For Teachers 4th - 5th
Learners examine the concept of finding the greatest common factor. They complete number of activities as they practice identifying prime and composite numbers. Pupils apply rules of divisibility and find the greatest common factor while...
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Lesson Plan
K20 LEARN

Prime Time

For Teachers 6th Standards
How many prime numbers are there between 1 and 100? By using a prime time resource, your scholars should be able to answer this question. Using arrays, they determine if numbers are prime or composite, and then write a prime...
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Lesson Plan
Curated OER

Prime & Composite Numbers: Algebra/Geometry Institute 2009

For Teachers 7th - 8th
Students create factor trees.  In this prime and composite activity, students model fractions using tiles.  They create factor trees and identify prime and composite numbers.  Students use grid paper and tiles to model numbers.  A...
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Worksheet
Curated OER

Primes in Product

For Students 9th - 12th
In this secondary mathematics learning exercise, learners must determine the two prime numbers and one composite number that would be factors of the given product.  The one page learning exercise contains one problem with the solution. 
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Worksheet
Curated OER

Prime Numbers

For Students 3rd - 5th
In this identifying prime numbers from one to fifty worksheet, students review prime numbers and color the prime numbers on the chart. Students color 15 answers. 
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Lesson Plan
Curated OER

Find the Factors and Prime Factors

For Teachers 4th - 6th
Show the class how to find the factors of numbers. They use a variety of strategies, including unifix cubes, to find the factors of a whole number. This resource includes clear procedure to follow. Included are an anticipatory set,...
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Activity
Math Learning Center

Grade 5 Supplement Set A2 – Number and Operations: Primes, Composites and Common Factors

For Teachers 5th Standards
Incorporate riddles into your math lesson by having students make tree factors and determine if the number is a prime or composite. They will also use other clues to find the answer to the riddle while sharpening their multiplication...
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Lesson Plan
Curated OER

Learning About Prime and Composite Numbers

For Teachers 6th - 8th
Students explore the concept of prime and composite numbers. In this prime and composite numbers lesson, students determine if a number is prime or composite.
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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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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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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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Worksheet
Curated OER

Prime or Composite numbers

For Students 6th - 10th
In this prime and composite numbers activity, students mark each 2 or 3 digit number as either prime or composite. Students complete 60 problems.
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Lesson Plan
Curated OER

Prime and Composite Numbers

For Teachers 6th - 8th
Students explore the concept of prime and composite numbers. In this prime and composite numbers lesson plan, students discover what makes a number prime or composite. Students then practice identifying primes and composites on the...
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Worksheet
Curated OER

Prime and Composite Numbers Optical Illusion

For Students 4th - 6th
In this prime and composite numbers practice instructional activity, students sharpen their math skills as they identify numbers as prime or composite to solve the optical illusion puzzle.
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Lesson Plan
Scholastic

Optical Illusion

For Students 3rd - 6th
Number theory gets a workout in an activity that asks individuals to identify and color code the prime numbers and the composite numbers in the provided graphic.
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Lesson Plan
Curated OER

Factor Trees

For Teachers 4th - 7th
For this factor trees worksheet, students make factor trees for 2 through 4 digit numbers. Students complete 20 factor trees for these numbers.
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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 Time

For Teachers 5th
Fifth graders complete activities related to prime and composite numbers. In this prime instructional activity, 5th graders make a hundreds chart with all the prime numbers. They create their own card game which deals with prime and...
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Worksheet
k12 Math Worksheets

Prime Factorization

For Students 6th - 8th
Your learners will get plenty of prime factoring practice with this one-page math instructional activity. 
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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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