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Inside OKCupid: The Math of Online Dating
Capture the hearts of your young statisticians with this real-life example of using statistics in online dating. The use of average and geometric mean are discussed in the context of creating the algorithm used to connect people.
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Sinking Soda Surprise
I'm sure you've heard that there are something like 20 tablespoons of sugar in a can of regular soda. It seems unbelievable, doesn't it? This demonstration really does show how much sugar is present in a can of soda. First, Spangler...
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Hydrogen Bubbles - Exploding Bubbles
The thinking, and science, behind hydrogen-powered cars is beautifully demonstrated in this episode. Spangler shows how, by itself, oxygen is not combustible. However, when some hydrogen gas is added, that changes! His assistant scoops...
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Floating Balls & Flying Toilet Paper
A blow dryer and ping pong balls are all you need to demonstrate the amazing properties of air flow. In this demonstration, Spangler has a little boy as his assistant. Together, they make ping pong balls, a beach ball, and a roll of...
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Red Cabbage Chemistry
An acid/base indicator that's made of blended red cabbage and water is used to demonstrate the various reactions that an acid/base solution goes through when some carbon dioxide gas is added. The best way to add the carbon dioxide is to...
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Melting Point of Metals
The hostess visits an antique shop and obtains three different metal-made curios. She then has them melted down in a foundry, measuring the temperature at which each becomes a liquid. Since you could never do such an experiment in the...
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The Inner Life of a Cell - Harvard University
The inner life of a cell is laid out like a science fiction film. With dramatic music playing in the background, show your learners how the organelles interact and perform. This highly scientific clip is very detailed and is geared...
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WWII - Brits Duel Desert Fox
Who is the Desert Fox? Erwin Johannes Eugen Rommel, also known as the Desert Fox, was forced to lead German troops to Tobruk after Italian troops failed to drive back British forces. Although Rommel's army ended up retreating, he still...
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Our World: The Rock Cycle
Sedimentary, igneous, and metamorphic rocks are the stars of this interesting video produced by NASA. The rock cycle is when each of these three types of rocks transforms into another kind of rock - which happens under extreme...
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How A Virus Invades Your Body
This simplified explanation is an entertaining way to see how viruses reproduce in the human body. Brilliant animation and humorous commentary will keep your junior high class engaged while they observe the basics about viruses. Follow...
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Indian Ocean Earthquake and Tsunami, 2004
The BBC reports on the Indian Ocean tsunami that occurred in 2004 off the coast of Sumatra in Indonesia as a result of an earthquake. Footage of the waves and destruction around the area is shown. Maps delineate the quake's epicenter and...
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Inside the Bee Hive
Take a daring dive into the depths of a bee hive to observe how these large colonies work together to gather pollen to produce honey. These bees are busy indeed and even have their own way of communicating. Check out this video to learn...
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Radiation and Radioactive Decay
Mr. Andersen introduces viewers to the use of a Geiger Counter. He explains the fundamental forces behind nuclear radiation and differentiates alpha, beta, and gamma radiation. Finally, he teaches how to write nuclear equations. This...
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From The Farm To The Fridge Part II
Part two in this video series on dairy farming in Florida is here for you. More details on the processes involved in getting milk from the cows, and the process of pasteurization are presented in great detail. These two videos, in...
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How to Build a Simple Electric Motor, Plus How it Works
When electric current moves through a magnetic field, a force is created that can actually power a motor. Learn how to build a simple electromagnetic motor by watching this colorful and upbeat video. This episode is the third in a series...
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The Collapse of the Soviet Union
The collapse of the Soviet Union is retold in this illuminating video. The video includes detailed descriptions of what each of the Soviet states were demanding from Gorbachev, and the role of Boris Yeltsin in the formation of the new...
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High-Velocity Falcon
"One of nature's boldest predators," the peregrine falcon, has the fastest raw speed amongst any creature on the planet. Follow these researchers as they study how the falcon lives and moves.
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Finding the 100th Term in a Sequence
The example problem is this video has a sequence of numbers that decrease by a fixed amount with each iteration, and one needs to find the 100th number in the sequence. Sal shows the listener how to find the pattern between the number...
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Example of Solving for a Variable
Sal uses the formula for perimeter to show how the variables can be moved around to solve a problem. He demonstrates a few different ways to do this.
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Equations of Sequence Patterns
An example of writing an algebraic equation of the pattern of blocks that grows at each iteration is shown in this video. Sal shows how to find the pattern by looking at the iteration number and number of blocks. He then continues this...
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Equation of a Tangent Line
Using a specific example, Sal shows how to find the equation of a tangent line to a given function at a specific point. Specifically, he solves the problem of finding the tangent line to the function f(x) = xex at x = 1. This problem...
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Domain of a Function
We look at a number of different examples of functions and see what their domain is. Sal writes the domain in set notion and shows how different functions can have different input values that cause the function to be undefined.
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What is the domain of a function?
After defining a simple function from a word problem, a short video shows how one could find the domain and the range of that function. The instruction reinforces the definitions of domain and range with a concrete example.
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Connection between even and odd numbers and functions
Are odd numbers connected to odd functions and even numbers to even functions? This video tries to clarify that connection. It also talks about functions that are neither odd nor even to give a more intuitive feeling about classifying...