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 ...

Students learn how to write an equation to find the area of rectangles. In this lesson, students will learn how to write an equation to find the area of rectangles by thinking of them as an array. / ...

Have you ever tried to help a child with their third-grade math homework, only to find yourself stumped? You're not alone. Many adults are surprised to discover that some of the math concepts taught ...

Students learn the meaning of the word area and learn how to find area. In this lesson, students learn the meaning of the word area and learn how to find area by both counting the units and ...