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...
Lesson Plan
EngageNY

Divisibility Tests for 3 and 9

For Students 6th Standards
Who knew the sum of a number's digits gives such interesting information? The 18th installment of a 21-part module has scholars investigate division by three and nine. After looking at several examples, they develop divisibility tests...
App
Freecloud Design

Mathmateer

For Students K - 6th Standards
Three, two, one...liftoff! Elevate math skills to new heights while having a blast. A great resource that combines entertainment and education for children of all ages.
Interactive
Scholastic

Study Jams! Prime & Composite Numbers

For Students 3rd - 6th Standards
Prime or composite, that is the question. Teach your class how to find the answer with this step-by-step presentation that defines and provides examples of each type of number. When addressing larger numbers, divisibility rules are...
Worksheet
Math Mammoth

Divisors = Factors 1

For Students 4th
In this mathematics worksheet, 4th graders fill in the chart with the factors divisible by each number. Then they study the charts and respond to the five word problems that follow. Students also find as many common factors of the given...
Assessment
Mathed Up!

Proof

For Students 9th - 12th Standards
Scholars learn how to write number theory proofs by viewing a video reviewing techniques for proofs on divisibility, parity, and consecutive integers. They then write proofs for a handful of conjectures on a worksheet.
Printables
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Houghton Mifflin Harcourt

Unit 2 Math Vocabulary Cards (Grade 5)

For Students 5th Standards
Twenty-eight flashcards make up a set designed to reinforce math vocabulary. Two styles of cards showcase either a bold-faced word or a corresponding definition card equipped with an example and labels. Terms include commutative property...
Interactive
Scholastic

Study Jams! Double-Digit Division

For Students 3rd - 6th Standards
RJ had an awesome basketball season this year! Use division by double-digit numbers to calculate his scoring average in this instructional presentation. Starting with an explanation of the terms dividend, divisor,...
Workbook
MLC

Fractions Packet

For Students 5th - 6th Standards
Your fifth graders will appreciate the simple, direct explanations, examples, and practice exercises in this well-organized unit on fractions. Beginning with an introduction to fractions, the packet flows smoothly through the fraction...
Unit Plan
National Security Agency

Fraction Fever

For Teachers 4th - 5th Standards
This unit on fractions allows for upper-aged elementary learners to explore ways to find the greatest common factor and least common multiple of two numbers. Ultimately, young mathematicians will be able to identify equivalent fractions,...
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...
Lesson Plan
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EngageNY

Dividing by (x – a) and (x + a)

For Students 10th - 12th Standards
Patterns in math emerge from seemingly random places. Learners explore the patterns for factoring the sum and differences of perfect roots. Analyzing these patterns helps young mathematicians develop the polynomial identities.
Assessment
Concord Consortium

Leap Years and Calendars

For Students 8th - 12th
How many birthdays do leap year babies have in a lifetime? Learners explore the question among others in a lesson focused on different calendar systems. Given explanations of the Julian, Gregorian, and Martian calendars, individuals use...
Worksheet
Math Mammoth

Factors

For Students 3rd
In this math worksheet, 3rd graders focus on determining missing factors. Students complete 34 problems representing factors of whole numbers.
Unit Plan
Curated OER

Equivalent Fractions and Comparing Fractions

For Teachers 2nd - 3rd Standards
How can you tell if fractions have equal value? Use various collaborative activities to demonstrate the ways to determine whether or not fractions are equivalent.
eBook
Mathigon

Mathigon: Math Foundations: Divisibility and Primes: Divisibility Rules

For Students 6th - 8th
There are a few different rules that can make it easy to check if a number is divisible by another. In this lesson you will learn some of them such as,any number that ends in 0, 2, 4, 6, or 8 is divisible by 2, divisibility by 5 we...
eBook
Mathigon

Mathigon: Math Foundations: Divisibility and Primes: The Distribution of Primes

For Students 6th - 8th
This lesson focuses on the distribution of large prime numbers. It offers a calculator to check numbers for prime and a calculator that allows you to create prime numbers. It also provides the history of methods find the distribution of...
eBook
Mathigon

Mathigon: Math Foundations: Divisibility and Primes: Prime Numbers

For Students 6th - 8th
This lesson focuses on prime numbers, numbers that can only be divided by one and itself. It explains the Fundamental Theorem of Arithmetic and the Sieve of Eratosthenes. Includes practice activities.
Unknown Type
Illustrative Mathematics

Illustrative Mathematics: 4.oa Multiples of Nine

For Teachers 3rd - 5th Standards
This task examines the interesting fact that when a number is divisible by 9 then the sum of its digits is also divisible by 9. Aligns with 4.OA.C.5.
Unit Plan
TED Talks

Ted: Ted Ed: Why Can't You Divide by Zero?

For Students 9th - 10th
Learn about the math rule that says we cannot divide by zero.
eBook
Mathigon

Mathigon: Algebra: Sequences: Pascal's Triangle

For Students 9th - 10th
This lesson focuses on Pascal's Triangle, a number pyramid in which every cell is the sum of the two cells directly above. It contains all binomial coefficients, as well as many other number sequences and patterns.