This paper uses a multilevel analysis of mathematical reasoning rooted in Cultural Historical Activity Theory to examine how mathematical discourse and student reasoning about linear functions ...

Want to help your eighth-grader master math? Here are some of the skills your child will be learning in the classroom. Understand rational and irrational numbers. Know that a rational number can be ...

Across the western US, severe wildfires fueled by tinder-dry vegetation have already burned more than 3.2 million hectares (8 million acres) -- an area the size of Maryland -- as of the end of October ...

In early March up on the frozen Arctic Coastal Plain, as the wind sculpts snow into drifts, it's hard to tell northern lakes from surrounding tundra. But lurking deep beneath that flat white world are ...

Boulder, Colo., USA: Across the western U.S., severe wildfires fueled by tinder-dry vegetation have already burned more than 3.2 million hectares (8 million acres [as of the time of this press release ...