Article
Cuemath

Cuemath: Factors

For Students 5th - 8th
A factor of a number in math is a number that divides the given number. Factors are used in many situations in daily life. This article explains factors and how to find factors using multiplication and division. Included are solved...
Activity
Math Is Fun

Math Is Fun: Long Division to Decimal Places

For Students 3rd - 8th Standards
If you want to learn the traditional algorithm for long division when you divide to the decimal places, this website gives a very clear, simple step-by-step break down of the process. Students can solve six problems to practice the skill...
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ClassFlow

Class Flow: Introduction to Division With Remainders

For Teachers 3rd - 5th Standards
[Free Registration/Login Required] This flipchart is an introduction to division with remainders. The lesson consists of teaching children the basics of division with remainders in problems that contain a 2-digit dividend with a 1 digit...
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Other

Eratosthenes' Prime Number Sieve

For Students 3rd - 8th Standards
Discover all the primes up to the number 400 by using this interactive table. Simply click on a number and its multiples disappear.
Activity
National Institute of Educational Technologies and Teacher Training (Spain)

Ministerio De Educacion: La Criba De Eratostenes

For Teachers 3rd - 5th Standards
Reinforce your knowledge about prime and composite numbers. Geogebra plugin required.

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