Taken very literally, not all students are created equal -- especially in their math learning skills, say researchers who have found that not fully understanding the "equal sign" in a math problem ...

The equal sign is the bedrock of mathematics. It seems to make an entirely fundamental and uncontroversial statement: These things are exactly the same. But there is ...

A growing number of mathematicians are skeptical that the equal sign, traditionally used to show exact relationships between sets of objects, holds up to new mathematical models, WIRED reports. To ...