Activity
Purple Math

Purplemath: Lcm & Gcf

For Students 9th - 10th Standards
Purplemath shows an easy and orderly way to determine the GCF and LCM of any two numbers. Even large numbers won't be a challenge with this method.
Unit Plan
CK-12 Foundation

Ck 12: Arithmetic: Prime Factorization

For Students 6th
[Free Registration/Login may be required to access all resource tools.] Write the prime factorization of given numbers.
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...
Graphic
Curated OER

Educational Technology Clearinghouse: Maps Etc: Southern China, 1912

For Students 9th - 10th
A map from 1912 of the southern China provinces at the end of the ruling Qing Dynasty.The map shows the political divisions at the time, province capitals and major cities, ports, railways, rivers, coastal features and islands of the...
Handout
ibiblio

Ibiblio: Web Museum: Yves Tanguy

For Students 9th - 10th
Brief information on Surrealist artist, Yves Tanguy with enlargeable image of "Indefinite Divisibility."
Whiteboard
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...
Unit Plan
Sophia Learning

Sophia: Even Numbers: Lesson 8

For Students 2nd - 4th Standards
This lesson shows even numbers, or numbers which can be evenly divided by two. It is 8 of 13 in the series titled "Even Numbers."
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...
Website
Other

American Amateur Baseball Congress

For Students 9th - 10th
The official website for the American Amateur Baseball Congress (AABC), the largest amateur baseball organization in the United States. Their site contains information on each of the AABC divisions, game results, news releases, and the...
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.