Your students will become junior math detectives as they hunt down the missing side of a rectangle by applying the area formula for rectangles. The only clues they have are the rectangle's area and the measure of one side.

Are these fractions really equal? Use this lesson to introduce the concept of equivalent fractions with your students. Teach this on its own or use it as support for the lesson Equivalent Fractions Using Area Models.

Critical thinking demands making inferences and having proof. Use this lesson plan with your students to teach how to infer author’s perspective and cite supporting quotes from text.