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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

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

Introducing the Concept Prime Factors

For Teachers 5th
Fifth graders identify the prime factorization for 48 using different sets of factors. They find the prime factorization for 60.
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Lesson Plan
Curated OER

Applying Prime Factorization

For Teachers 6th
Sixth graders use the prime factorization of numbers to find the greatest common factor and least common multiple. Working in small groups, they solve problems using the greatest common factor and least common multiple.
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Lesson Plan
Curated OER

Prime and Composite Numbers

For Teachers 6th
Sixth graders inspect prime and composite numbers. Using graph paper, they draw as many different shaped rectangles as possible. They use the dimensions of the rectangles to discuss prime and composite numbers. Students create a chart...
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Lesson Plan
Curated OER

Prime and Composite Numbers

For Teachers 6th
Sixth graders identify prime and composite numbers. They participate in a hands-on activity to discover the multiples and factors of specified numbers. They write a paragraph to explain representing factors.
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Lesson Plan
Curated OER

Prime and Composite

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

Sieve of Eratosthenes

For Teachers 5th - 8th
Young scholars discover the Sieve of Erathosthenes. They explore a method to find all the prime numbers in a group of numbers. Using models, students practice divisibility rules while examining the difference between prime and composite...
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Lesson Plan
Curated OER

Grade 5: Multiple Towers

For Teachers 5th
Fifth graders use interlocking cubes to build towers to represent factors of numbers and place the towers in the appropriate places on a Tower chart in order to look for patterns. They work in partner groups, and finish by writing...
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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

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 Numbers

For Teachers 9th - 11th
Students differentiate between prime and composite numbers. In this algebra instructional activity, students define the terminology and investigate the contributions made by Eratosthenes and Euclid as it relates to prime numbers....
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Interactive
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Scholastic

Study Jams! Divisibility Rules

For Students 2nd - 6th Standards
Learning division is a challenge for many young mathematicians, but this presentation on divisibility rules can make it much easier. Seven different rules are clearly explained and modeled with the support of multiple examples. Consider...
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Lesson Plan
Curated OER

Math: Am I Prime?

For Teachers 7th
Seventh graders determine the difference between prime and composite numbers. On a Website, they discover a method to identify all the prime numbers up to 100 and also complete several online activities. Once they have discussed the...
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Lesson Plan
Curated OER

Investigation-Design Your Own Spinner

For Teachers 6th - 8th
Students design their own spinner that meets the given criteria. In this math lesson, students discuss biased versus unbiased events or outcomes when dealing with probability. Students are given 5 criteria that must be incorporated into...
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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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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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Worksheet
Curated OER

Finding Primes-The Sieve of Eratosthenes

For Students 7th - 9th
In this middle school/Algebra I worksheet, learners use the sieve of Eratosthenes to determine the prime number less than two hundred.  The one page worksheet contains one problem.  Answer is not provided. 
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Lesson Plan
Curated OER

Number Line Mathematics

For Teachers 3rd - 4th
Students translate problem situations into diagrams, models, and numerals using whole numbers, fractions, mixed numbers, decimals, and percents. They identify that numbers in different forms are equivalent or not equivalent using whole...
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Worksheet
Curated OER

Counting from 1-20 - Odd and Even Numbers

For Students 2nd
In this number recognition worksheet, 2nd graders examine a number chart that includes the numbers 1- 20. They record all of the even numbers on one line, and all of the odd numbers on a second line.
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Lesson Plan
Curated OER

Number Theory

For Teachers 8th - 12th
Learners explore the concept of number theory. They discuss an assortment of number theory topics such as prime numbers, composite numbers, GCF, modular arithmetic, and others in a lecture style discussion. Pupils view videos about these...
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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

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

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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