Curated OER
Najaf- A Holy City Caught In The Crossfire
Young scholars investigate the city of Najaf and its present circumstances as part of the conflict in the Middle East. They conduct research using a variety of resources. They read an online news article while conducting brainstorming...
Curated OER
A New Century Of Flight
Learners analyze an article about fight traffic and answer questions. In this investigative lesson students study flight and fill out a worksheet pertaining to the information that they just learned.
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"...
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.
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.
Homeschool Math
Homeschool Math: Divisibility Rules
This is a complete lesson plan 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,...
Texas Instruments
Texas Instruments: Divisibility Rules! Using Scientific Calculators
Concepts and skills covered in this activity include number theory, divisibility rules, multiples, factors, and problem-solving skills.
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.
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.
Mathigon
Mathigon: Math Foundations: Divisibility and Primes: Divisibility Rules
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...
Cool Math
Coolmath: Pre Algebra Divisibility Tests
Known as Guzzinta Tests, here are some quick tricks you can learn to see if a number is divisible, can be divided by, another number.
Quia
Ixl Learning: Divisibility Rules With Numbers Up to 10,000
Practice divisibility rules with numbers up to 10,000.
Quia
Ixl Learning: Divisibility Rules With Dividend Up to 10,000,000
Divisibility rules practice with numbers up to 10,000,000.
Math Is Fun
Math Is Fun: Divisibility Rules
A chart that overviews divisibility rules for numbers divisible by numbers 2 through 12. Simple rules accompanied by examples.
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...
Better Lesson
Better Lesson: Divisibility Rule for 4 and 5
Using calculators allows students to experiment and to discover patterns, in this case resulting in a divisibility rule for the number 4.
Better Lesson
Better Lesson: Divisibility Rules
The students will be investigating mathematical rules for division to assist them with fluency. This lesson will be added to their tool box!
Better Lesson
Better Lesson: Divisibility Rules for 2 and 3
Sixth graders will work with calculators to discover the divisibility rules.
Quia
Ixl Learning: Divisibility Rules
Brush up on your math skills relating to divisibility rules then try some practice problems to test your understanding.
Lesson Tutor
Lesson Tutor: Divisibility Rules Worksheet
A worksheet of twenty practice problems is given here for students 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 to the...
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.
ClassFlow
Class Flow: Divisibility & Factorials
[Free Registration/Login Required] Testing for divisibility of 0, 2, 3, 4, 5, 9, 10 & 11. This flipchart explores factorials and perfect numbers as well.
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.
Khan Academy
Khan Academy: Factors & Divisibility
Students practice multiple-choice problems with factors and divisibility.
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