In this short math video we will find the radius of a cone. We will be given the volume and the height of a cone. We will identify the formula for the volume of a cone. We will rewrite the formula using the giving values for the...

Write the equation of a circle given the center and the radius.

In this quick math short, we start with the formula for the area of an isosceles right triangle and show how to rearrange it to solve for s, the side length. Then, we identify which of four answer choices gives an equivalent...

In this math video, we the area of a sector of a circle step by step — aligned with Common Core Standard G-C.B.5! 🔵✏️
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We’re given a circle with a shaded sector, the radius, and asked to find the area of the shaded...

A common complaint that math teachers hear is, "When am I going to need this in the real world?" When you're sitting in algebra class, it's easy to feel like it's all theoretical–a bunch of imaginary numbers and rules dreamed up by...

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The Ripmo embodies the term “hover bike.” It floated up rough climbs, indifferent to pedal input. Likewise, it swallowed our chunky descents while still maintaining more pop than a long-travel 29er should. That once niche category is...

Hate knowing what line to take then fighting your bike to get through it? Kona’s Process 153 29 solves line choice ambivalence, entirely. With telepathy. Which is amazing.

On June 10, 1854, Georg Friedrich Bernhard Riemann gave his classic lecture on curved space. Riemann was a 19th century mathematician from Germany. His landmark lecture included a workable definition of how someone might measure the...

How to simplify when you add, subtract, or multiply radical expressions

This video discusses how to simplify radical expressions involving fractions and/or division

What is a conditional statement, and how (from that conditional statement) do you create a converse, inverse, and contrapositive?

In this video, we will dilate figures on the coordinate plane when the center of dilation is not the origin. The first example is a standard dilation (enlargement) with a non-origin center, and the second example gives you both the...

In this video, we learn how to dilate figures from the origin. We do one example that is an ENLARGEMENT (has a scale factor greater than 1), and another example that is a REDUCTION (scale factor that is between 0 and 1).

In this video, we investigate how and why geometric mean can be used to find missing side lengths in certain triangles.

In this video, we derive the rule for writing geometric sequences using the "n-1" notation.

We all know the Pythagorean Theorem, but what can we conclude if a^2 + b^2 is NOT equal to c^2?

Welcome to our complete high school mathematics tutorial series! Whether you’re a student preparing for exams, a teacher seeking additional resources, or a parent helping your child succeed in math, these videos cover a wide range of...

Welcome to our complete high school mathematics tutorial series! Whether you’re a student preparing for exams, a teacher seeking additional resources, or a parent helping your child succeed in math, these videos cover a wide range of...

In this math video we will be plotting points on a graph. We will learn that an ordered pair is written in the form (x, y) where x tells us the horizontal distance to travel right from the origin followed by a vertical distance of y. We...

In this math video we will learn how to use unit cubes to find the volume of a right rectangular prism. Each unit cube will have fractional lengths. We will understand that a cube is three dimensional and each side length is the same...

In this math video we will learn how to write the equation of a circle. We will review the formula to write the equation of a circle given the center (h, k) and the radius r. We will understand that h represents the x coordinate of the...

The area of a triangle is always calculated using the formula 1/2 × base × height, regardless of whether it is a right, scalene, isosceles, or equilateral triangle. Perimeter and area have practical applications, such as determining the...