You have that slide rule in the back of the closet. Maybe it was from your college days. Maybe it was your Dad’s. Honestly.

An algebraic equation contains one or more letters in it. Each letter in the equation is called a variable. A variable can change in value. We guess at different values for each letter until our ...

The Eisenhower Matrix teaches business owners to focus energy where it counts most: building systems and investing in what ...

Simultaneous equations are two linear equations that can be solved using bar models. By remembering that the same letter will always have the same value we can work out the missing values. To solve ...

Stage 5: Justify thinking. A vital habit that many students need to solidify is recontextualizing after they solve ...

Descriptive set theorists study the niche mathematics of infinity. Now, they’ve shown that their problems can be rewritten in ...

A simple-looking math equation is spinning heads - leaving internet users torn over the right answer. An X user @BholanathDutta posted the elementary grade math sum this week, telling people to solve ...

Will Kenton is an expert on the economy and investing laws and regulations. He previously held senior editorial roles at Investopedia and Kapitall Wire and holds a MA in Economics from The New School ...

With nearly two decades of retail management and project management experience, Brett Day can simplify complex traditional and Agile project management philosophies and methodologies and can explain ...

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Ebony Howard is a certified public accountant and a QuickBooks ProAdvisor tax expert. She ...

Charlie Shackleton explains how he would have made a film had he won the rights to a book on a murderer. The result is a fascinating look at a whole genre. By Alissa Wilkinson Mark Wahlberg and ...