Students go over using number lines to solve the four equations in a fact family. In this lesson, students go over using number lines to solve the four equations in a fact family. Julia uses charts, ...

Like many humans, honeybees seem to prefer their numbers ordered from left to right. Honeybees trained to recognize a specific number tend to fly left when given two side-by-side options of a smaller ...

Addition & subtraction strategies to solve two-digit equations using an open number line. In this lesson, students go over using different addition and subtraction strategies to solve two-digit ...