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Maxima Minima Slope Intuition
Before solving any problems, Sal gives an overview of what happens to the slope, first derivative, and second derivative at local maxima and minima to give the viewer a more intuitive feel for these types of problems.
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Optimization Example 4
Sal does another optimization example, this time, minimizing the total cost of an open rectangular box. In this problem, the volume can be defined in terms of a single variable and given a cost model, he builds a cost equation. He finds...
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Graphing with Calculus
In a problem where you are not given the original function, but rather only three known points on the graph and a few additional pieces of information about when the first and second derivatives are positive or negative, Sal shows how...
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Optimization with Calculus 3
Using what one learned about finding the minimum and maximum of functions, the optimization problem to find two numbers whose product is -16 and whose sum of squares is a minimum is solved. Sal starts by writing the equations and...
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Division of Rational Numbers
Practicing dividing fractions first in a straightforward equation, Sal translates those skills for use in a word problem later in the video. This lesson would be helpful for those who struggle to understand what word problems are truly...
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Average or Central Tendency: Arithmetic 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...
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Number Base Conversion Practice
Now that viewers can work with binary, decimal, and hexadecimal number systems, they are ready to convert between the different systems. This video clearly explains the necessary steps for converting between the systems with...
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Linear, Quadratic, and Exponential Models
Viewers play a game with Sal, in which he presents three different data sets that come from either linear, quadratic, or exponential functions. In solving this puzzle, Sal manages to not only provide a strong definition of each function,...
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Level 1 Exponents
Both positive and negative numbers play a part in this video. Here, Sal explains the definition and function of exponents. Especially helpful for those with the tendency to multiply an integer by its exponent, this video offers several...
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Cornstarch Goo - Cool Science Experiment
In this fascinating episode, Mr. Spangler uses cornstarch and water to create a solution known as "non-Newtonian" solution, meaning that the solution doesn't behave in the way that Newton's laws would expect it to. This is one of the...
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Sulfur Hexafluoride - Deep Voice Gas
In one of the more memorable Spangler episodes, Spangler has a large terrarium filled with sulfur-hexafluoride gas, which is six times heavier than the air we breathe! It has some amazing properties, one of which it doesn't allow...
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Flying Toilet Paper - Cool Science Experiment
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 three year old boy as his assistant. Together, they make ping pong balls, a beach ball, and a roll...
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Subtracting Negatives
The teacher shows four different examples of subtracting negative numbers by leaving the first value the same and then adding the opposite of the second value.
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Reading the Treble Clef
Jerry shows viewers how to read the treble clef. He provides a clear explanation that is easy to follow. Fantastic video!
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NewtonÕs First Law and Eggs
Spinning eggs and Newton's first law of motion, yes it's true. This really well done clip is perfect of class or homeschool use. It uses the example of a cooked vs. an uncooked egg to describe Newton's first law. Lots of light bulbs will...
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Combustion Reaction
The details of a combustion reaction are described in this detailed video. Fantastic graphics and narration are included.
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Cells Magnified
The beginning of this video asks, "Have you ever wondered what the world looks like magnified?" It further shows great visuals of various objects magnified up to 400 times! This is a fantastic video to show your class during your unit on...
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Baby Energy
Baby energy is not what it sounds like, it's better. Using a baby playing at the park as his model, this young man describes, provides solid examples, and works through a series of equations that show energy. Potential and kinetic...
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Oceans: Hawaii
Over 1,000 different species of fish are native to the Hawaiian Islands! Voyage under the sea for some magnificent close ups. Then take a trip to the sandy shores to learn about the monk seals, who were nearly forced into extinction in...
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Exploring the Deep 2 | The Secret of Underwater Asphalt
How does asphalt exist underwater? This bizarre habitat was recently discovered in the Gulf of Mexico and explorers are just beginning to take samples and conduct laboratory experiments. The most surprising part is the wealth of sea life...
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Exploring our Backyard, The Solar System - Part 2/2
Continue the journey through our solar system through the lens of the tools sent into space. Viewers meet rovers, rockets, and satellites as they gather vital information, helping scientists understand out solar system. Real images, CG...
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Mining the New American West
The Mining Act of 1872 allows mining companies to purchase land from the U.S. Government at 1872 prices - about $5.00 an acre! This video features the town of Crested Butte, Colorado, and a mountain just outside of town that was...
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Gold, Silver, & Bronze
The teacher focuses on the chemistry of the metals in Olympic medals. This video is a different approach to teaching about metals, covering a variety of concepts: elements, alloys, properties of metals, atomic structure, and the periodic...
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Coal Mining: A Visual Documentary
The Harold Keen Coal Company has produced an excellent video which shows the viewer all about the process of mining coal that shows some rarely-seen images of the intricacies of underground mining. Surface mining is also described in...