What is the relationship between fractions and rational numbers? Can you explain why the product of two fractions between 0 and 1 is less than either factor? How are rational numbers related to irrational numbers, which your students will study in later grades?

How much do you know...and how much do you need to know?

Helping your upper elementary school students develop a robust understanding of rational numbers requires that you understand this mathematics deeply. But what does that mean?

This book focuses on essential knowledge for teachers about rational numbers. It is...

In 2001 the first World Social Forum was held in Porto Alegre, Brazil. The meeting was viewed by many at the time as a new manifestation of the global Left, a people's opposition to the World Economic Forum that stood as the first real front to global capitalism since the collapse of the Soviet Union. While many activists and intellectuals on the left have since become deeply critical of the Forum, newer movements, such as Occupy, the Arab Spring and the indignados, have built upon its successes and innovations.
Another World is Possible is the original collection of essays and demands...