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National Council of Teachers of Mathematics
The Math Forum: Divisibility Test Game "Nullo"
The lesson plan for two to four players engaged in an active card game to determine the divisibility of a number. The materials needed, the rules of the game, and the methods of scoring are all explained for the teacher.
McGraw Hill
Glencoe: Self Check Quizzes 1 Divisibility Patterns
Use Glencoe's randomly generated self-checking quiz to test your knowledge of divisibility patterns. Each question has a "Hint" link to help. Choose the correct answer for each problem. At the bottom of the page click the "Check It"...
CK-12 Foundation
Ck 12: Arithmetic: Divisibility Rules to Find Factors
[Free Registration/Login may be required to access all resource tools.] Determine the factors of given numbers using divisibility rules.
Varsity Tutors
Varsity Tutors: Hotmath: Algebra Review: Divisibility Tests
Find a quick, concise explanation of how to use the rules for divisibility by the numbers 2 through 10. Examples are given and clearly explained for each of the divisibility rules.
Homeschool Math
Homeschool Math: Divisibility Rules
This is a complete lesson about the concept of divisibility and common divisibility rules. It briefly reviews the concepts of factor, divisor, and a number being divisible by another. Then, the "easy" divisibility rules by 2, 5, 10, 100,...
Lesson Tutor
Lesson Tutor: Divisibility Rules
A handy table of the rules of division is presented here. Examples are given for each of the rules, from the number 2 to the number 10. The site stresses that a list such as this isn't cheating, but rather a nice resource to have.
Lesson Tutor
Lesson Tutor: Divisibility Rules Worksheet
A instructional activity of twenty practice problems is given here for learners wishing more help with the concept of reducing fractions down to their lowest terms. The first several questions are accompanied with explanation, and a link...
Illustrative Mathematics
Illustrative Mathematics: 4.oa Multiples of 3, 6, and 7
This task investigates divisibility properties for the numbers 3, 6, and 7. Aligns with 4.OA.C.
Other
Historical Narratives of Early Canada: One Kingdom Divisible
This web page examines Benjamin Franklin, the Boston Tea Party, First Continental Congress, and the Second Continental Congress in 1775, where Canadians were invited to attend. Learn more about the flow of revolution and loyalty on each...
Lawrence Hall of Science
The Math Page: Skill in Arithmetic: The Meaning of Division
This Math Page tutorial explains and defines the concept of division. There is a practice section at the end of the lesson.
Mathigon
Mathigon: Math Foundations: Divisibility and Primes: The Distribution of Primes
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...
Scholastic
Scholastic: Study Jams! Math: Multiplication and Division: Divisibility Rules
This site provides great practice on the concept of divisibility rules. Students can first learn about the topic by watching a step by step instruction video that also points out areas of concern. Finally, students can practice their...
CK-12 Foundation
Ck 12: Chemistry: Democritus' Idea of the Atom
[Free Registration/Login may be required to access all resource tools.] Explains the ideas of Democritus dealing with the divisibility of the atom.
Math Slice
Math Slice: Divisibility
This resource contains timed practice for divisibility rules. There is a link to an explanation of the divisibility rules. Students receive instant feedback and an opportunity to practice again.
Illustrative Mathematics
Illustrative Mathematics: 4.oa Multiples of Nine
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.
National Council of Teachers of Mathematics
The Math Forum: Beat the Calculator: Adding Even Numbers
Can you beat the calculator? Your task is to find the sum of all even numbers between two and any selected two-digit even number. If you can find the number pattern, you are sure to beat the calculator every time. Links to other "Beat...
The Math League
The Math League: Whole Numbers & Basic Properties
Here is a nice resource for students and teachers about whole numbers and their basic properties. It provides links to information on place value, expanded form, and rounding numbers are just a few of the topics on this page.
Mathigon
Mathigon: Math Foundations: Divisibility and Primes: Real Life Applications
This lesson provides real life applications for divisibility and prime numbers including the Cicada Cycle's use of prime numbers and Cryptography,encryption.
Better Lesson
Better Lesson: Divisibility Rules and Properties of Math Quiz
SWBAT show their understanding of the divisibility rules.
Mathigon
Mathigon: Math Foundations: Divisibility and Primes: Prime Numbers
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.
CK-12 Foundation
Ck 12: Arithmetic: Division of Decimals by Decimals
[Free Registration/Login may be required to access all resource tools.] Find the quotient of two decimals by changing divisors into whole numbers.
Quia
Quia: Divisibility and Prime
If you enjoy playing the game Battle Ship you will enjoy this game. When you locate an enemy ship to get the hit you must correctly answer a question using your knowledge of divisibility rules and prime numbers. It is a fun way to...
National Council of Teachers of Mathematics
The Math Forum: Basic Divisibility Rules
This site offers a short quick reference list of divisibility rules with links to the explanations
San Diego State University
San Diego State University: Divisibility War
This site offers the rules of divisibility and a game for practicing those rules. Everything is included in the site for making this game. Don't be discouraged by the length of the explanations!