(bright music) - Hi everybody, and welcome back to "Room Nine", our region's largest classroom. My name is Miss St. Louis, and I'm a teacher at Rogers Elementary School in the Mehlville School ...

Students write multiplication equations based on groups of objects using zero and one. In this lesson, students write multiplication equations based on groups of objects using zero and one. Mrs.

We like to think that we're pretty good at math, especially after years of schooling. But every once in a while, a simple third-grade math problem manages to trip us up and make us question our ...