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...
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...
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...
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 directs...
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 invites learners...
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 go through to find the...
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 testing...
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...
Curated OER
Bonds Vs. Stocks
What's the difference between stocks and bonds? Sal illustrates this concept through explaining the two ways a company can raise capital: debt or equity. Drawing out a balance sheet, he categorizes stocks as equity and bonds as debt,...
Curated OER
Chapter 11: Bankruptcy Restructuring
Continuing from the last clip on liquidation, scholars explore another bankruptcy avenue: restructuring. Sal briefly touches on covenants with debt holders and goes into reasons a company would refrain from liquidating when facing...
Curated OER
Going Back to the Till: Series B
Help young economists understand the concept of a company's increasing value despite a lack of profit. They explore Sal's case study startup company, which needs to raise more money after going through the original angel investment. For...
Curated OER
Housing Conundrum (Part 4)
The last of four videos, this clip explains why there were such low default rates at the beginning of the 21st century, and the effect this had on the market. Sal breaks down the options for a homeowner who can no longer pay a mortgage...
Curated OER
Housing Price Conundrum (Part 3)
Wondering why home financing relaxed in the years following Y2K? In the third of a four-part series, Sal describes the investment phenomenon between 2000 and 2006 that allowed more people to bid on homes and increased demand...
Curated OER
Inflation, Deflation & Capacity Utilization
High utilization of capacity leads to a raise in prices. Salman Khan discusses competition and its effect on inflation.
California Academy of Science
Waste Water Recycling
What types of water qualify for recycling and how does the recycling process work? The eighth lesson in the 10-part series exploring Fresh Solutions presents both the financial and water savings associated with emerging recycling methods.