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
Adding Polynomials
Adding two polynomials begins with simplifying when possible. Sal demonstrates the process he uses to combine like terms and explains why the process works. This video would be great for those who need a quick refresher.
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
Dividing Monomials
Here is a quick look at how one could simplify a monomial expression involving division. Sal works a problem and briefly explains his process. Great as a concept review.
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
Monomial Greatest Common Factor
Sal explains that the greatest common factor of any number is the largest number divisible into both monomials and not necessarily the number with greatest value. He breaks down two numbers into their prime factors as a product of its...
Curated OER
Factoring the Difference of Squares
Practice is an important learning tool. This practice problem allows students to apply their know-how to factoring a binomial with a difference of squares. Sal explains his process briefly, which makes this video appropriate for those...
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
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
Solving Rational Equations
Continue your lecture on radical equations with this video, which features Sal solving a few more problems with his classic clarity and understandable way. Young mathematicians will benefit immensely from seeing his cool hand guide the...
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
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
Percent Problems
Converting percents to decimals, and the other way around, can be tricky. Sal shows young mathematicians how to simplify this process with two sample equations and one word problem.
Khan Academy
Recognizing Linear Relationships
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,...
Khan Academy
Solving Equations with the Distributive Property
Here is an equation in which the first step is to use the distributive property to get rid of the parenthesis. Then it is solved for the variables. Since there are variables on both sides of the equation, it is important to verify the...
Khan Academy
Solving for a Variable 2
The instructor uses the formula for temperature to show how the variables can be moved around to solve a problem.
Curated OER
Testing if a Relationship is a Function
This short video looks at different points on a coordinate plane and answers a question about whether these points could represent a function. The answer is determined by looking at each point individually to determine whether given a...
Curated OER
Area of a Circle
A second installment in a series on circles, this production demonstrates the process of finding the area of a circle. As an introductory tool, it is effective. However, it does not explain the reasoning behind the formula because that...
Khan Academy
Parallel Lines
Here is fairly basic video that takes three equations, each written in slope-intercept form, with the goal of determining whether the lines are parallel. Sal graphs each of the equations on the same coordinate plane to show how their...
TED-Ed
What Is Metallic Glass?
Metallic glasses are shiny and opaque, and they conduct heat and electricity like metals. They have a lot of characteristics that make them special and unique to most metals. But, what are they made of? Watch this video to discover what...
TED-Ed
Can Wildlife Adapt to Climate Change?
Can humans protect other species from the effects of climate change? Can animals adapt or evolve fast enough to survive? Check out this video for some surprising answers.
TED-Ed
The Genius of Marie Curie
Can you name the only person to win two Nobel Prizes in two different sciences? After watching a short video on the life, discoveries, and accomplishments of Marie Curie, you can!
TED-Ed
The Silk Road: Connecting the Ancient World Through Trade
Introduce learners to The Silk Road, the first world-wide web. The narrator of this short, animated video traces the pioneers of globalization and the impact they had on culture and economy. The Scythians, Darius the First, and Alexander...
TED-Ed
What Are the Challenges of Nuclear Power?
Engineering challenges, construction costs, and disasters are some of the challenges when it comes to nuclear energy. Watch a video that explains each of these and more in detail.