Better Lesson
Better Lesson: Connecting Multiplication and Division
How are multiplication and division connected? Why do 11 divided by 2 and 11 times 1/2 result in the same answer? Students make connections between multiplication and division and work to develop strategies for dividing whole numbers by...
Other
Saskatoon Public Schools: Mental Math Strategies
Strategies for basic addition and multiplication are explained here and there are several practice worksheets that can be downloaded.
wikiHow
Wiki How: How to Square Fractions
Demonstrates how to square a fraction, how to square one with a negative sign, and strategies for simplifying the steps. Includes video at end [2:05].