Curated OER
Prime Numbers and Factors
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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College Prep Algebra Arithmetic Review
In this algebra worksheet, students complete 30 computation problems involving fractions, decimals and (or) exponents. They change 4 fractions to decimals and factor 6 whole number to primes.
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Prime and Composite Numbers
Students explore the concept of prime and composite numbers. In this prime and composite numbers lesson, students discover what makes a number prime or composite. Students then practice identifying primes and composites on the provided...
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Factoring
Ninth graders factor equations and find prime numbers. In this algebra lesson, 9th graders find the factors and prime factors of a number using multiples and relatively prime numbers.
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March of the Dividing Ant
Students inspect divisibility rules. In this divisibility rules lesson plan, students study the relationship between factorization and the divisibility rules for 2, 3, 5, 6, 9, and 10. Students read One Hundred Hungry Ants and A...
Math Solutions
Factor Game
Learning about factors and multiples is all fun and games with this simple math activity. The lesson begins with the teacher and class playing the Factor Game together as students figure out the rules and uncover key vocabulary as they...
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Number Theory
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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Greatest Common Factor: Using the Factor Tree
Students find the greatest common factor of two numbers. In this algebra lesson, students use prime factorization to find their factor to simplify equations. they create a factor tree to find the factors of composite numbers.
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Grade 5: Multiple Towers
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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Prime and Composite Numbers with use of manipulatives (Elementary, Mathematics)
Students learn what prime and composite numbers are. They learn how to identify them by working in a group and demonstrating an understanding of one work problem with 100% accuracy using the manipulatives provided.
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Factors, Divisibility, and Relatively Prime
Seventh graders explore the concept of divisibility. In this divisibility instructional activity, 7th graders use divisibility rules to find factors of numbers. Students create foldables to illustrate divisibility rules.
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Prime and Composite Numbers
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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Prime and Composite
Middle schoolers explore prime and composite numbers. In this prime and composite numbers lesson plan, students discover the difference between prime and composite. Middle schoolers practice as a class then do independent practice.
West Contra Costa Unified School District
Simplifying Radicals – Day 1
It doesn't get simpler than this. Scholars first learn to simplify radicals by determining the prime factors of the radicand. The lesson plan progresses to simplifying radicals involving algebraic expressions in the radicand.
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Exponential Expressions - Perfect Squares, Square Roots
Color tiles are used to model perfect squares. Alone or in pairs, middle schoolers will find patterns. Afterward, the relationship between perfect squares and roots will be discussed as a whole class.
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Simplify Expression Using the Order of Operations
Allow learners to explore both the right and wrong way of completing equations with the order of operations. They discuss how the order in which operations are performed affects the outcome of a problem. A fun "trick" using order of...
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Systems of Equations - Week 6
For this systems of equations worksheet, students solve systems of equations simultaneously. They read story problems, write systems of equations. This two-page worksheet contains eight problems.
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One Hundred Hungry Ants (Multiplication and Division)
Fourth graders explore factors of numbers from 1 to 50. They gain practice with basic facts and multi-digit multiplication problems. Students practice the commutative property. They discover the link between multiplication and...
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My Son is Naughty
Students find factors of numbers; work systematically; and use logic to explain away certain possible number combinations. They then devise and use problem solving strategies to explore situations mathematically.
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Paper Pool
Students analyze the measurements of rectangles. In this analysis lesson, students will investigate patterns by looking at ratios. Students will also hypothesize the probability of a ball going into a certain pocket when playing pool....
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Mathematics Within: Algebraic Processes and Its Connections to Geometry
Fifth graders discover the connections between algebra and geometry. With a focus on arrays and factors, they are introduced to multiplication. They develop an array for multiples of 2 through 10 and identify the factors of each row....
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Number Theory - Week 12
In this number theory worksheet, students study integers and their properties. They explore the Fibonacci Sequence and approximate irrational numbers. This two-page worksheet contains eight problems.
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Euclidean Algorithm
Young scholars are introduced to the concept of a Greatest Common Divisor. They review the number systems. Students are told how the entire field of Number Theory primarily uses the integers. They are told the Fundamental Theorem of...