CK-12 Foundation
CK-12 Middle School Math Concepts - Grade 6
Twelve chapters cover a multitude of math concepts found in the Common Core standards for sixth grade. Each title provides a brief explanation of what you will find inside the chapter—concepts from which you can click on and learn more...
Other
Online Statistics Education: Graphing Distributions [Pdf]
This is the second chapter of a statistics e-text developed collaboratively by Rice University, University of Houston Clear Lake, and Tufts University. It looks at many different types of data displays and the advantages and...
Crescent Public Schools
The Internet Science Room: Percentage Composition and Empirical Formulas
Students learn how to find percentage composition, the percentage of a formula mass represented by each element. Percentage composition compares the mass of one part of a substance to the mass of the whole.