Apply and extend previous understandings of addition and subtraction to add and subtract rational numbers; represent addition and subtraction on a horizontal or vertical number line diagram.

Create zero pairs using integer chips
In this lesson you will learn to create zero pairs by using integer chips.
 7.NS.A.1a

Combine opposite numbers on a number line
In this lesson you will learn to make zero by combining opposite numbers on a number line
 7.NS.A.1a

Combine opposite rational numbers on a number line
In this lesson you will learn to make zero by combining opposite rational numbers on a number line.
 7.NS.A.1a

Combine opposite quantities to make zero using a number line
In this lesson you will learn how opposite quantities combine to make zero by using a number line.
 7.NS.A.1a

Add integers using a number line
In this lesson you will learn how to add integers by using a number line.
 7.NS.A.1b

Add positive and negative integers using a number line
In this lesson you will learn how to add positive and negative numbers by using a number line.
 7.NS.A.1b

Add integers using a number line
In this lesson, you will learn how to add integers by using a number line.
 7.NS.A.1b

Add integers using color counters
In this lesson, you will learn how to add integers by using color counters.
 7.NS.A.1b

Add integers with the same sign
In this lesson, you will learn how to add integers with the same sign by analyzing the rules using a number line.
 7.NS.A.1b

Add integers with different signs
In this lesson, you will learn how to add integers with different signs by analyzing the rules using a number line.

In this lesson, you will learn the additive inverse by combining opposite quantities.
 7.NS.A.1a
Isolation Drills:
Adding and subtracting fractions with unlike denominators
Adding and subtracting negative numbers
Adding and subtracting negative numbers word problems
Constructing and interpreting absolute value
Understanding addition and subtraction on the number line
Understanding addition and subtraction with negative numbers
Interactive Practice:
 Applications of Integers – Deals with negative numbers in the real world; temperature, banking, and sea level measurement are discussed, in addition hockey’s use of negative numbers is included
 Add Fractions – Index of six activities
 Adding and Subtracting Fractions with Like Denominators – Five multiplechoice questions
 Adding and Subtracting Fractions with Unlike Denominators – Five multiplechoice questions
 Adding and Subtracting Integers – Using a number line, several examples of adding to a negative integer are given
 Adding Fractions – Six activities available from Visualizing Fractions
 Colored Chip Models – Use manipulatives to model addition, subtraction, multiplication, and division with positive and negative integers [includes two practice problems]
 Compare Fractions – Two activities available from Visualizing Fractions
 Comparing and Ordering Integers – Number Line practice
 Comparing Fractions – Summary of ways of comparing fractions [Skillwise factsheet]
 Comparing Values – Create your own math facts worksheets for comparing values. Problems can include calculations using positive and negative numbers, and two digit decimal values
 Estimate Fractional Distance – Watch Grammy carefully and estimate the fractional distance that represents where she jumped over the hedge.
 Estimating Decimal Sums and Differences – Five multiplechoice questions
 Estimating Sums and Differences of Fractions – Five multiplechoice questions
 Explaining Negative Numbers – Video from YouTube (may be blocked by some school filters)
 Find Thirteen Ways of Expressing Half – After Dr. Marbles illustrate ways to express one half you look for the other ways.
 Fraction Models – This tool, an interactive applet, explores several representations for fractions using adjustable numerators and denominators. You can see decimal and percent equivalents, as well as a model that represents the fraction are available for upper grades.
 Fraction Practice – All operations, mixed practice – (explanations given for wrong answers)
 Fractions: Rectangle Multiplication – Interactive site from the National Library of Virtual Manipulatives
 Identify Fractions – Six activities available from Visualizing Fractions
 Negative Numbers for Children – Learn this card game to help students understand negative and positive numbers.
 Negative Numbers on a Number Line – Explanation from the Math League
 Operations with Integers – Add and subtract integers
 Operations with Integers – Complete addition and subtraction sentences with integers
 Operations with Integers – Add and subtract integers: word problems
 Practice with Order of Operations – Ten practice problems [answers available] [from the Wayback Machine Internet Archive.]
 Rename Fractions – Eight activities available from Visualizing Fractions
 Rounding Fractions and Mixed Numbers – Five multiplechoice questions
 Subtracting Fractions – Five activities available from Visualizing Fractions
 Teaching Operations for Integers – Number line practice, patterns and more.
 The Number Line – Sea level and temperature examples are given on a vertical number line
 Tips for Teaching Integers – Helpful tips on teaching number line, negative and positive.
 Understanding Integers – Lesson 6 from Spy Guys Interactive