Non-dietary ingestion is an important exposure pathway for children owing to their frequent hand-to-mouth and object-to-mouth activities involving soil and dust contacts. We used videotaping and the ...

I've been teaching second and third-graders mathematical problem solving for six years. In that time, I've learned that kids are more apt to enjoy math if they already have a strong foundation. Kids ...

Fractions are the basis for most higher-level mathematics. Students need to master the numerical values in earlier grades to tackle topics like algebra later. There’s only one hitch: Fractions can ...