Better Lesson
Better Lesson: Associative Property
Children need to understand why the mathematical properties work and how they are applied. In this lesson, we explore modeling and "proving" the associative property.
Help Algebra
Help algebra.com: Using Principles of Equality
An equation is solved using both the addition and multiplication principles of equality. This example can be used as a model for solving similar equations.
Simon Fraser University
Chem1 Virtual Textbook: Kinetic Molecular Model
The General Chemistry Virtual Textbook, or Chem 1, is broken into several sections covering various aspects of topics related to chemistry. This section deals with the basic components of the Kinetic-Molecular Theory in addition to...