Humans have a natural tendency to try to solve problems by adding rather than simplifying them. Can’t get someone to understand your point? You pile on more examples and arguments. Feel like you ...

Students put all of their addition and subtraction skills together to solve equations. In this lesson, students put all of their addition and subtraction skills together to solve equations. Julia ...

It took an earthquake to convince one city to do away with a double-decker highway. City planners in San Francisco had tried for years to get approval for removing the Embarcadero Freeway that blocked ...

Have you ever tried to add or subtract fractions that have different denominators? It’s tricky, right? Join Ms. Susanna Post in this lesson to learn how to solve these types of challenging problems!