Barbie caught a lot of flack back in the ’90s for declaring, “Math class is tough!” Today we find ourselves in the disorienting position of defending her. We recently got a note f… ...

Ensuring students correctly understand the notion of equality is a fundamental problem in teaching mathematics. Is it possible to teach arithmetic in such a way that students do not misinterpret the ...

When used to perform arithmetic operations, the plus and minus signs are infix operators. SAS also provides several other operators that are used only with certain SAS statements. The WHERE statement ...