ALEX Lesson Plans Subject: Mathematics (8) Title: What's My Number -- How to estimate the square root of a number that is not a perfect square Description: In this lesson, eighth grade students will learn the steps necessary to approximate the square roots of numbers that are not perfect squares.  Students will use a number line as a visual aid to complete this task. Subject: Mathematics (8) Title: Rational or Irrational? That is the question. Description: Students will participate in an activity that will help them obtain a feeling of how numbers are related to each other. They will determine whether a number is rational or irrational. Students will also be able to order rational and irrational numbers on a number line.This lesson plan was created as a result of the Girls Engaged in Math and Science, GEMS Project funded by the Malone Family Foundation.Subject: Mathematics (8) Title: The Real Number System Description: This lesson focuses on a clear understanding of the real number system by using a variety of teaching strategies. A graphic organizer on a slideshow illustrates how the classifications of numbers relate. A kinesthetic activity helps students compare the classifications. Thinkfinity Lesson Plans Subject: MathematicsTitle: Approximations of Pi      Add Bookmark Description: This student reproducible, from an Illuminations lesson, provides information about and several examples of approximations for the constant pi.Thinkfinity Partner: IlluminationsGrade Span: 6,7,8