Khan Academy
Rounding Whole Numbers 1
Rounding is an important skill which must be used throughout the study of mathematics. This Khan Academy video is the first in a series of 3. It shows how to round the number 24,259 to the nearest hundred, using a number line.
Curated OER
Polynomial divided by monomial
Let's think about the ways in which a person could simplify an expression where a polynomial is divided by a monomial. Sal shares 3 different modes he could use to simplify, then uses each way to solve the same problem.
Curated OER
Factoring Trinomials with a Common Factor
Use division and factoring to determine the leading 1 coefficient. This presentation thoroughly explains how to factor a trinomial in order to determine its common factors.
Curated OER
Multiplying And Dividing Rational Expressions
Provide your algebra class with some review of rational expressions in this video. Sal uses several sample problems to show viewers the process, and his explanations are clear and easy to understand.
Curated OER
Factor by Grouping And Factoring Completely
Useful as a classroom resource, a computer lab assignment, or even a homework supplement, this video shows viewers some more techniques for factoring polynomials. Once they have mastered the art of factoring, the rest of algebra will...
Curated OER
Adding Whole Numbers and Applications 1
Adding double-digit numbers can seem difficult for some students. But, this Khan Academy video makes this process clear in a developmentally sound way. Students watch as 'Sal' adds the number 46 to 43. He references each number by its...
Khan Academy
Rounding Whole Numbers 2
This is the second in a series of 3 Khan Academy videos on rounding whole numbers. Students watch Sal Khan round the number 423,275 to the nearest thousand by looking to the number in the hundreds place. If it is 5 or higher, you round...
Curated OER
Scientific Notation 2
Apply the concept of scientific notation to a word problem involving the rate of speed. Sal explains how to express the answer in scientific notation.
Curated OER
Factoring Sum of Cubes
Here is a special form of a sum of cubes problem, where students use algebraic multiplication to rewrite each term in expanded form. Sal gives an example prior to solving the problem in order to show the process that he will use to...
Curated OER
Average or Central Tendency: Finding Mean, Median And Mode
A good explanation for blossoming mathematicians, this video explains the difference between average and central tendency, as well as arithmetic mean, median, and mode. Those who haven't grasped these concepts in algebra or those who are...
Curated OER
Binomial Theorem (Part 3)
In this video on the Binomial Theorem, Sal tries to give an intuition behind why combinations are part of its definition. By looking at the expansion of (a + b)3 and carefully looking at where each value originates from, one can see how...
Curated OER
Conic Sections: Hyperbolas 2
Here is an example in this video of graphing a hyperbola centered at the origin. First, Sal shows solving for the equations of the asymptotes and then shows how to determine the direction of the hyperbola. He takes the approach of not...
Khan Academy
Parallel Lines From Equation, Mathematics I, High School Math
Here is a fairly basic video that uses three equations, each written in slope-intercept form, to determine whether the lines are parallel. Sal graphs each equation on the same coordinate plane to show how their slopes compare. The video...
Khan Academy
Area of a Circle, Perimeter, Area, and Volume, Geometry
This production, the second installment in a series of circles, demonstrates the process of finding the area of a circle. It is effective as an introductory tool. However, it needs to explain the reasoning behind the formula because that...
Khan Academy
Solving Equations with the Distributive Property, Linear Equations, Algebra I
Here is an equation in which the first step is to use the distributive property to remove the parenthesis. Then, it is solved for the variables. Since variables are on both sides of the equation, it is important to verify the answer by...
Khan Academy
Recognizing Linear Functions, Linear Equations and Functions
Starting with a set of values for the x and y variables, this video shows how to tell whether these points determine a linear or non-linear function. Sal first defines linear functions in terms of the change in y over the change in x,...
California Academy of Science
Your Digital Footprint: Data and Energy Use
Understanding energy usage requires knowing more than how much energy it takes to charge your cell phone. Scholars learn each text sent uses energy as does each video, game, and phone call. They observe the larger grid of data transfers...
Crash Course Kids
Try Trials
Future engineers are bowled over with the wealth of information brought to them by this video. The focus is on engineers and the process they take to test solutions by isolating variables with multiple trials.
Crash Course Kids
Defining Success
The telephone, refrigerator, and light bulb are all solutions to a problem that an engineer successfully designed. Get to know more about how engineers define success, using this video. The focus goes through a checklist that...
Crash Course Kids
Defining a Problem
Scholars may think they face big problems, but not like the problems engineers face. During this episode, the first step of the engineering process, define the process, is examined through a hypothetical scenario that...
Crash Course Kids
Got Some Solutions?
Does a problem only have one solution? This is the driving question of a video that allows pupils to discover that there is more than one way to solve a problem. A demonstration examines the checklist engineers...
Crash Course Kids
Succeed by Failing
"If at first you don't succeed, try, try again." This statement has never rung truer than when engineers are testing solutions. Here is an informative video that focuses on the failure point which engineers often face when...
Northeast Arkansas Education Cooperative
Function Families: Translations and Reflections
This comprehensive introduction to rigid transformation of functions does a fabulous job of breaking down translations and reflections into manageable concept chunks. Care is taken with horizontal translations, vertical translations,...
California Academy of Science
Desalination
Desalination requires around two gallons of sea water to make one gallon of fresh water—that's quite a ratio! Viewers consider the pros and cons of desalination as one option to providing fresh water. They learn about two different...