**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.
**Standard(s): **

[MA2015] (8) 2: Use rational approximations of irrational numbers to compare the size of irrational numbers, locate them approximately on a number line diagram, and estimate the value of expressions (e.g., π^{2}). [8-NS2]

**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.

**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.
**Standard(s): **

[MA2015] (8) 1: Know that numbers that are not rational are called irrational. Understand informally that every number has a decimal expansion; for rational numbers show that the decimal expansion repeats eventually, and convert a decimal expansion which repeats eventually into a rational number. [8-NS1]

**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.

**Title:** Approximations of Pi

**Description:**
This student reproducible, from an Illuminations lesson, provides information about and several examples of approximations for the constant pi.
**Standard(s): **

[MA2015] AM1 (9-12) 12: Calculate the limit of a sequence, of a function, and of an infinite series. (Alabama)

**Subject:**Mathematics

**Title:**Approximations of Pi

**Description:**This student reproducible, from an Illuminations lesson, provides information about and several examples of approximations for the constant pi.

**Thinkfinity Partner:**Illuminations

**Grade Span:**6,7,8