A Program of The Actuarial Foundation. Aligned with Common Core State and NCTM Standards.

What is an actuary? An actuary is an expert in statistics who works with businesses, governments, and organizations to help them plan for the future. Actuarial science is the discipline that applies math and statistical methods to assess risk.

# Diving Into the Number System

## Absolute Value, Negative Numbers, and Irrational Numbers

Welcome to "Diving Into the Number System," a new math program designed to support middle school students in grasping crucial foundational number concepts. Developed by The Actuarial Foundation with Scholastic, the program includes printable activity sheets that build skills and elicit critical thinking through an engaging story line on ocean researchers.

Standards Chart: Common Core State and NCTM Standards

LESSON PLANS

Lesson 1: Absolute Value and Ordering Rational Numbers
Using knowledge of positive and negative numbers, students will be able to plot numbers on a number line and determine the absolute value of numbers.

Lesson 2: Adding and Subtracting With Negative Numbers

Students will be able to add and subtract negative numbers using a number line as well as identify real-world applications for negative numbers.

Lesson 3: Irrational Numbers

In addition to solving problems using irrational numbers, students will be able to approximate irrational numbers, including placing them on a number line.

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