Adding a percent of a number to a number
A state department of education, as a question on the public-release form of a statewide standardized…
Math
Dividing fractions (rational numbers)
A state department of education, as a question on the public-release form of a statewide standardized…
New multiplication: squares, diagonals, lattices
You may have noticed your child multiplying two- and three-digit numbers in a way that looks…
Locate estimated square roots on a number line
A state department of education, as a question on the public-release form of a statewide standardized…
Function table pattern recognition (algebra I)
The following question is in the public domain. It concerns the skill of analyzing a wide…
Common Core State Standards Initiative leaves out 4 states
http://www.usatoday.com/news/education/2009-06-01-state-standards_N.htm Only four states (Alaska, Missouri, South Carolina, and Texas) have yet to sign on with…
What is a stem-and-leaf plot?
This post is directed at content developers, elementary math. I would like you to develop a…
What is a fraction?
Update, 12 Nov 2012: Do you want to explore fractions rather than just read about them?…
What is a fraction?
We have developed interactive tools that allow students to explore and compare fractions with like and unlike denominators using graphical, visual models