University of Cambridge
University of Cambridge: Nrich: A Conversation Piece
On this one page website sharpen your logic, division and prime number recognition skills while working on this challenge. The solution is available to double check your solution.
National Institute of Educational Technologies and Teacher Training (Spain)
Ministerio De Educacion: Divisores Y Primos
Reinforce your knowledge on prime numbers and their divisors.
ClassFlow
Class Flow: Number Sense Related to Division
[Free Registration/Login Required] This flipchart introduces divisibility, primes and composites, averages, and estimating quotients.
Curated OER
Cbc.ca: The Great Transformation: Seeking an Identity
A brief overview of Canada at the start of the 20th century when Prime Minister Laurier was in power, the divide between French and English, challenges in the West, and existing ties to Britain.
Other
Dan's Math: Basic Skills Topics
College professor Dan Bach offers a review of various basic topics in arithmetic, pre-algebra, and algebra. Order of operations, exponents, square roots, variables, and combining terms are just a few of the many topics covered.
CK-12 Foundation
Ck 12: Math Grade 3
Browse resources related to third-grade math standards. Click on a topic for interactive lessons, videos, and extra practice.
Cuemath
Cuemath: Square Root of 98
In this mini-lesson, learn how to find the square root of 98 using various methods.
Cuemath
Cuemath: Factors
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...
ClassFlow
Class Flow: Global Knowledge Where in the World Am I?
[Free Registration/Login Required] This flipchart explains the division of the hemispheres, northern and southern, and eastern and western. The Equator and Prime Meridian are defined, as well as latitude and longitude. Students are given...
Other
Visnos: Number Explorer
Explore division, factor pairs, and prime factors in this interactive exercise.
The Math League
The Math League: Fractions
This tutorial covers all types of fractions with simple explanations on how to work with them.
Interactive Mathematics
Interactive Mathematics: Integers: Negative Numbers
Explore the world of negative numbers as you look at their relationship to positive numbers, integers, absolute value and more. Test your knowledge using he exercises and games provided.
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.
Math Aids
Math Aids: Fractions Worksheets
Great resource for learning and practicing fractions and their different operations. Math worksheets are printable, may be customized, and include answer keys.
Cuemath
Cuemath: Least Common Multiple
Learn about the properties of Least Common Multiples (LCM) and the three methods to find the LCM. Included are solved examples and interactive problems for review.
Curated OER
Etc: Clip Art Etc: General Ormsby Mac Knight Mitchel
General Mitchel, born at Morganfield, Union County, Ky., August 28th, 1809, died at Hilton Head, S. C., October 30th, 1862, was graduated from the United States Military Academy in 1829. Immediately after his graduation he was made...
Help Algebra
Help algebra.com: Fractions
This resource offers an overview of fractions from several aspects, including simplifying, reduced, mixed numbers and improper form, and basic operations. Examples and diagrams are included to help demonstrate each topic.