"A series for teaching mathematics."--P. [1] of cover.

Why do some equations have one solution, others two or even more solutions and some no solutions? Why do we sometimes need to ""switch"" the direction of an ine

Focuses on the specialized pedagogical content knowledge that you need to teach ratios and proportions effectively in grades 6-8. The authors demonstrate how to

Although proportional reasoning is not formally introduced as a topic in the Common Core and other mathematics curricula until 6th grade, introducing its fundam

How does working with data in statistics differ from working with numbers in mathematics? What is variability, and how can we describe and measure it? How can w