Another mark reads: NEW MATH (/)FLASH CARDS. Another mark reads: ADDITION-SUBTRACTION. A further mark reads: [copyright] 1965. The set has the maker’s number: 7020. Compare 2005.0055.06, 2005.0055.07, ...

The Common Core math standards are a topic of hot controversy, especially on the right. The Daily Signal, a news and commentary site started by the Heritage Foundation, recently featured this ...

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