Khan Academy
Converting Fahrenheit to Celsius, Pre-Algebra
Sal teaches students how to convert a temperature in Fahrenheit to its equivalent temperature in Celsius. He is explicit and very clear, which is suitable for those needing additional assistance or exposure to a particular topic.
Khan Academy
Example 4: Adding and Subtracting Polynomials, Algebra Basics
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.
Khan Academy
Evaluating an Algebraic Expression with Exponents
Here is the first video in a three-part series on evaluating exponential expressions. Sal Khan evaluates an exponential expression, reminding students to use PEMDAS while he demonstrates and explains his algebraic reasoning.
Khan Academy
Identifying Fraction Parts, Fractions, Pre-Algebra
Students observe Sal identify parts of a fraction. He draws a pentagon and 'cuts' it into five equal slices. Next, he removes two 'slices' and writes the remaining portion as a fraction, explaining what each part represents.
Khan Academy
Prime Factorization, Factors and Multiples, Pre-Algebra
Older elementary students will appreciate how clearly Sal explains how to find the prime factorization of 75. He shows the complete process, taking note of numbers that are and are not primes, and why.
Khan Academy
Decimal to Simplified Fraction, Decimals, Pre-Algebra
This video demonstrates how to write a decimal as a fraction and explains why it works. The concept is explained well and presented clearly and straightforwardly. Great for third or fourth graders.
Khan Academy
Introduction to Evolution and Natural Selection
The evidence for natural selection is presented as a random variation of a characteristic allowing a particular strain of organism to survive with a higher probability of successful reproduction. Population change over a short period is...
Khan Academy
Variation in a Species
If there are no extenuating environmental factors to ensure competition in a species, then variation is achieved by random mutation. This resource may be more useful after viewers are introduced to the concepts of alleles and the...
Khan Academy
Bay of Pigs Invasion, The 20th Century, World History
A bright collage of photos, maps, and quotes opens this video lecture, which details the Bay of Pigs Invasion. The most valuable part of this lecture, however, is hearing about the dynamics of the situation - why the US wanted to oust...
Khan Academy
Natural Selection and the Owl Butterfly
The lecturer describes how specific characteristics develop. In this case, he discusses eye marking. The impact of environmental factors significantly influences the likelihood of successful reproduction, as favorable genes are more...
Khan Academy
Carbon 14 Dating 1, Life on Earth and in the Universe, Cosmology and Astronomy
Sal introduces Carbon 14 in this chemistry video and explains to students how it is found in all living things. He also explains how carbon-14 is used to date items from the past. He points out that Carbon 14 can only enter a living...
Khan Academy
Volume of a Rectangular Prism: Fractional Dimensions
This website is used for students and teachers to practice sixth grade math skills. This website offers practice exercises, instructional videos, and a personalized learning dashboard that empowers learners to study at their own pace in...
Khan Academy
Object Types
Young coders learn how to use a function to create objects with similar properties and to allow for the creation of objects repeatedly with a short video that makes the point that coding with a function eliminates repetitions.
Khan Academy
What is Inside a Universal Remote Control?, Electrical engineering
Viewers get to see inside a universal remote control with a code library, with a short video that explains the components and how they work together to provide convenience.
Khan Academy
What is Inside a Hair Dryer? (1 of 2), Electrical Engineering
Discover the safety features in a hair dryer's plug. In the first of two videos on hair dryers, viewers watch as the plug for a hair dryer is taken apart. The video explains how a ground fault interrupt circuit in the plug works.
Khan Academy
What is Inside a Tap Light?, Reverse Engineering, Electrical Engineering
Turning on a tap light requires just a tap, but breaking it apart requires a bit more work. Viewers watch as the narrator disassembles a tap light into its components. The video explains the purpose of each part and how the tap light works.
Khan Academy
What is Inside an Alarm Clock Radio?, Electrical Engineering
Tick tock! Viewers see the inside of an alarm clock radio and how it works as the narrator of the video disassembles an alarm clock radio. The presenter explains how the power unit, housing unit, clock, and radio were constructed and how...
Khan Academy
Object Inheritance, Intro to JS: Drawing & Animation, Computer Programming
There is an easier way to share functions among objects. The fifth section of a six-part series on object-oriented design introduces the concept of object inheritance. The coding helps pupils create a base object type that has all the...
Khan Academy
What is Inside a Digital Camera? (1 of 2), Electrical Engineering
Explore the big picture of digital cameras. The first of two videos on digital cameras shows viewers the components inside a simple digital camera. It explains in detail how a digital camera works and how the components are made.
Khan Academy
What is Inside a DVD Player? (2 of 5), Electrical Engineering
Powered up! Continuing the series on DVD players, the second video examines the switch-mode power supply unit. It also looks at the difference between AC and DC.
Khan Academy
What is Inside a Hair Dryer? (2 of 2), Electrical Engineering
How can companies make cheap hair dryers? The second of two videos on hair dryers looks at what's inside a hair dryer. The video also shows and explains some cost-cutting measures that companies take to maintain competitive costs.
Khan Academy
What is Inside a Coffee Maker?, Reverse Engineering, Electrical Engineering
You'll never look at your coffee maker the same way again after viewing a video on reverse engineering that shows the components inside a coffee maker. The narrator explains how each part was made, what material it is made from, and how...
Khan Academy
Object Methods, Intro to JS: Drawing & Animation, Computer Programming
This video shows young programmers how to use the same concept to duplicate objects with different properties and attach functions to them. This method allows functions to be easily called with various objects.
Khan Academy
Introduction to the FAFSA
As many of our young learners prepare for their college education, introduce them to the Free Application for Federal Student Aid (FAFSA), a rubric for determining an estimated family contribution for a college education. The...