Last week, my first grader came home with thoughts about math (I love it when she does that!) She said that, since one hundred plus ten was “one hundred and ten”, that, therefore, infinity plus ten ...

I met a fellow math professor at a conference several weeks ago who is teaching a class on the idea of infinity. He told me of a story he tells his class about how difficult the idea of "infinity" can ...

It’s a complaint many algebra teachers are familiar with, as more letters and symbols are introduced with progressively harder courses in mathematics. But why did the plus symbol emerge as the ...