Khan Academy
Rounding Whole Numbers 3, Arithmetic Properties, Pre-Algebra
Sal Khan completes the three-part rounding series with this Khan Academy video on rounding to the nearest 10. He references the actions taken in video two, so students would be best served if all three videos were shown in sequence.
Khan Academy
Rounding Whole Numbers Example 1, Arithmetic Properties, Pre-Algebra
Rounding is an essential skill that must be used throughout the study of mathematics. This Khan Academy video is the first in a series of three. It shows how to round the number 24,259 to the nearest hundred, using a number line.
Khan Academy
Polynomial Divided by Monomial, Polynomial and Rational Functions, Algebra I
Let's think about how a person could simplify an expression where a polynomial is divided by a monomial. Sal shares three different modes he could use to simplify, then uses each way to solve the same problem.
Khan Academy
Simplifying Rational Expressions (Old Video)
Here is a quick look at how one could simplify a monomial expression involving division. Sal works on a problem and briefly explains his process. Great as a concept review.
Khan Academy
Finding the Greatest Common Factor of Two Monomials, Algebra I
Sal explains that the most significant common factor of any number is the largest number divisible into both monomials and not necessarily the number with the most significant value. He breaks down two numbers into their prime factors as...
Khan Academy
Factoring Sum of Cubes, Polynomial and Rational Functions, Algebra II
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 before solving the problem to show the process that he will use to determine the...
Khan Academy
Example 1: Factoring Trinomials with a Common Factor, Algebra II
Use division and factoring to determine the leading one coefficient. This presentation thoroughly explains how to factor a trinomial to determine its common factors.
Khan Academy
Solving Radical Equations, Exponent Expressions and Equations, Algebra I
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...
Khan Academy
Solving Percent Problems, Decimals, Pre-Algebra
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 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,...
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
Testing If a Relationship is a Function, Functions and Their Graphs, Algebra II
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...
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...
Curated OER
Multiplying Binomials with the Magic Box
A short video on using the magic box to multiply binomials. A very simple problem is given and it is shown how to set up the magic box and multiply the terms.
Curated OER
Multiplying Algebraic Fractions
This explanation of the steps to multiply algebraic fractions is fairly thorough. She covers factoring of the terms in the fraction and then cancelling of numerators and denominators. However the video and transitions between slides are...
Teach Engineering
How Antibiotics Work
Take two pills and call me in the morning. The first lesson in a short unit of four introduces class members to delivery methods of medicines. The instruction introduces the question of which delivery method is best to get you feeling...
Teach Engineering
Microfluidic Devices and Flow Rate
When you have to flow, you have to flow. The lesson introduces class members to microfluidic devices and their uses in medicine. They watch a short video on how the diameter affects the rate of flow. The worksheet has individuals...
PBS
Pbs: Workplace Essential Skills: Using English Measurement
From server storage to fiber internet cable length, understanding measurements is an essential information technology workplace skill.
PBS
Pbs: Workplace Essential Skills: Solving Problems in the Field
Employees in the information technology industry use math to solve problems in their daily jobs, like how much server space is needed for certain applications.
California Academy of Sciences
Ca Academy of Sciences: What If
It's more important than ever to make sure that students are learning STEM skills: Science, Technology, Engineering and Math. Here at the California Academy of Sciences, we make it our mission to educate students about the natural world...
Khan Academy
Khan Academy: Subtracting Decimals: 9.005 3.6
Just like when add, be sure you align decimals before subtracting. Created by Sal Khan, Monterey Institute for Technology and Education. [2:08]
Khan Academy
Khan Academy: Identifying Numerators and Denominators
Sal identifying numerators and denominators in fractions. Created by Sal Khan and Monterey Institute for Technology and Education. [2:31]
Other
School Wax Tv
This media-sharing site consists of only educator-approved videos, organized by audience and grade level. It includes videos created by teachers, students, and educational organizations. Videos are organized by subject and grade range,...