Grade school math students are likely familiar with teachers admonishing them not to just guess the answer to a problem. But a new proof establishes that, in fact, the right kind of guessing is ...

Problems are often answered in mathematics by solving equations. We use letters to represent an unknown number or value. To solve an equation, we need to find what number the letter in the equation ...

We solve an equation by working out the value for one letter. To solve an equation we use the inverse operations to undo the equation. This video shows a visual method for solving a word problem. The ...