I usually prefer writing my own logic in Excel, so I was hesitant to start using the Formula by Example tool. But when it turned my manual patterns into a perfectly structured formula, it became the ...

Excel has over 475 formulas in its Functions Library, from simple mathematics to very complex statistical, logical, and engineering tasks such as IF statements (one of our perennial favorite stories); ...

Learn why the achievements of Egypt, Babylon and Greece, though child’s play today, still stand as remarkable feats of intellect. It’s humbling to realize that much of high-school math, so vexing to ...

Research shows smart study beats long study for math formulas. Retrieval practice and spaced repetition are key. Quizzing helps more than re-reading. Spacing out reviews improves retention. Mixing ...