As nine students cluster in a semi-circle in Gail Younie’s cozy summer school classroom at Stephensen Elementary in Southwest Portland, the baggies full of brightly-colored two-dimensional Styrofoam ...

The calculator on your Apple devices can do more than add, subtract, multiply and divide. Here's how it can help you with all ...

Young children can crudely add and subtract numbers before they have learned the rules of arithmetic, a new study finds. Researchers presented five- and six-year-old children with problems such as, ...