The concept of “inverse” is central to Algebra. It might be used when describing adding a negative number to a positive one to clear out a simple algebraic equation, or might show up as a topic in ...

For the past several years, the stock market has gone through a period of nearly unprecedented calm. Not only did the market move upward sharply, but it did so in a way that had almost no major ...

This department explores a game used to help students learn about additive inverses, or “zero pairs.” Authors describe some common reasoning that students used while playing the game and provide ...