Khan Academy
SAT Prep: Test 1 Section 3 Part 8
At the end of the first review session of The Official SAT Study Guide, Sal demonstrates how to solve problems 19 and 20, which include skills like absolute values and consecutive integers. Students can go back over these twenty problems...
Khan Academy
SAT Prep: Test 3 Section 4 Part 4
Adding the values of angles, deciphering fraction word problems, and solving complex linear equations are all in a day's work for Sal, who will stop at nothing to help your students pass the SAT. His clear annotations and strong...
Khan Academy
Negative Numbers Introduction, Negative Numbers and Absolute Value, Pre-Algebra
Sal tackles pre-algebra in this series of videos, starting with the concept of negative numbers. Using a number line, he takes the viewer through different practical examples of negative numbers, such as temperature and bank accounts....
Khan Academy
SAT Prep: Test 3 Section 2 Part 2
Problem number 6 on the practice SAT involves solving for a distance on a line, which Sal does in about 2 minutes. His method of efficiently (and correctly) solving problems is an excellent model for students who tend to panic at the...
Khan Academy
Adding/Subtracting Negative Numbers, Pre-Algebra
Guiding viewers through the addition and subtraction of numbers, this video includes many tips to help new learners internalize the concept of a number line. It clarifies the relationship between positive and negative numbers, including...
Khan Academy
SAT Prep: Test 1 Section 6 Part 3
Sal is having a blast in this video, and his fun-loving attitude will rub off on even your most stressed-out test-takers. Problems 7-10 in the practice SAT require skills in linear equations, as well as approximation and basic algebra.
Khan Academy
SAT Prep: Test 5 Section 9 Part 2
Sal notes the important of reading a question very carefully in this video, as he nearly misreads a problem but catches his error before it's too late. Most problems shown here involve algebra skills.
Khan Academy
Decimals and Fractions on a Number Line, Decimals, Pre-Algebra
Using a number line can provide students with a concrete representation of the value various numbers hold. Sal plots six different numbers on a number line. He includes whole, decimal, and negative numbers.
Khan Academy
Example of Plotting a Simple Inequality on a Number Line, Pre-Algebra
Graphs are excellent tools for visualizing data. Use this video to demonstrate what inequalities look like on a number line. Sal draws a number line and shows the inequality. He effectively employs differentiated colors to express the...
Flipped Math
True False Equations
Determine what makes the equation true. Learners view an instruction video on determining what values make an algebraic equation true. The pupils describe the solution set using three different methods: verbally, set notation, and...
Corbett Maths
Reading Scales
There's any number of reasons why number lines are important. Young mathematicians learn about two skills related to numbers lines. First, they see how to determine the value of a point by considering the intervals drawn on the number...
Math Antics
Types of Fractions
Locate types of fractions on the number line. Using a number line, the video shows where the location is depending on fraction type. By thinking about fractions' locations, scholars compare the types and use that information to estimate...
Krista King Math
Relationships of Numbers
Challenge your classes to find relationships within fractions. An example asks learners to find the number that is one fifth of the way between two fractions. The instructor uses a number line to reinforce the numeric process.
Krista King Math
Opposite of a Number
While the standards don't call for negative numbers to be taught before the sixth grade, many students benefit from learning the concept earlier. A video explains what teachers mean by the opposite of a number. It includes absolute...
Math Meeting
Adding and Subtracting - Negative Numbers
Here is a video that adds visual context and a steady stream of step-by-step instructions for adding and subtracting negative integers, with the help of a number line.
Curated OER
The Number Line
Learn about the number line! The number line is defined, described and shown in this short video. The instructor tells learners how to use a number line with whole and real numbers as well as how it can be used to determine greater than...
Curated OER
How Do You Solve and Graph a Two-Step Inequality?
Approach inequalities in a new way with this video! This video gives step-by-step instruction on how to solve a two step inequality and then graph the answer. Learners could use this video as a reference as they do homework, or you might...
Curated OER
What are Positive and Negative Numbers?
Is zero positive or is it negative? Are all positive numbers to the right of zero on the number line? Are all negative numbers to the left of zero on the number line? Are all positive numbers greater than zero? Are all negative numbers...
Curated OER
What's an Integer?
Introduce your class to integers with this video. This video provides a definition of integers, using examples of numbers that are integers and numbers that are not. A straightforward video that could be used to teach the concept as well...
Curated OER
How Do You Add Integers Using a Number Line?
Confused about adding integers? Use a number line to help you get a visual on which way to move according to the sign of the numbers. Negative means you move left on the number line and then of course positive numbers mean you move to...
Curated OER
How Do You Solve an OR Compound Inequality and Graph It On a Number Line?
Go over how to solve a compound inequality and graph it with this video. The video is clear and concise. A lecturer solves a compound inequality and graphs it on the spot, explaining each operation in detail. Great for in-class or...
Curated OER
What's the Midpoint of Two Points on a Number Line?
There are two given values on a number line, what is the midpoint? Here's another formula. Identify the two given points, add them together, and then divide by two and that's the solution. Need proof? Then watch this video as the teacher...
Curated OER
How Do You Solve a Word Problem Using an Absolute Value Inequality?
After reading this inequality word problem, young learners might just skip over it and not even make the attempt to solve it. It seems rather complicated. So watch this video as the teacher explains all that needs to be done to solve...
Curated OER
How to Use a Number Line
Have your class watch this video to get a better understanding of adding and subtracting positive and negative numbers. In an easy to understand manner, the presenter explains how to add numbers, both negative and positive, using a...