TED-Ed
The Mathematical Secrets of Pascal’s Triangle
This modern animation and discussion of the ancient secrets of Pascal's triangle manages to be topical, engaging, and mathematically deep all at the same time. A great introduction to the power of number theory across multiple math...
Khan Academy
Ratio And Proportion
Both intuitive and logistical steps bring Sal and the viewers to the correct answers in these problems using ratio and proportion. An equation with ratios introduces the video, and the skills from that problem lend well to the word...
Khan Academy
Solving a Proportion with an Unknown Variable (Example)
There are many ways to solve a proportion. In this presentation, Sal goes over all of them. He demonstrates several methods for solving a proportion. He goes through every necessary step and explains the entire process. This would be...
Khan Academy
Representing a Number as a Decimal, Percent, and Fraction 2, Decimals, Pre-Algebra
There are two Khan Academy videos on representing numbers as decimals, percents, and fractions. This one shows students how to represent a fraction as a decimal and a percent. Sal demonstrates the process used to convert the fraction 7/8...
Khan Academy
Proportion Word Problem (Example 1)
This video elaborates on the basic concept of finding an unknown by analyzing a word problem and then applying one of the techniques seen in the previous video. Tip: Use this word problem as a warm-up before your math lesson.
Flipped Math
Trig Ratios
Take ratios of sides to a new level. Pupils learn the definitions of the three basic trigonometric ratios in right triangles. Using the definitions, scholars find missing lengths in right triangles, based on a known angle. Individuals...
Flipped Math
Unit 7 Review: Right Triangles
It is all right to spend some time with a review. After watching a short review video covering the materials from the unit, pupils work through 23 review problems. Scholars work on problems involving the Pythagorean Theorem and its...
Corbett Maths
Decimals to Fractions
Look at decimals in a different light. The resource uses place value to show learners how to convert decimals to fractions. Afterwards, class members practice their skills with two different worksheets.
Mathispower4u
Negative Exponents
Extend exponent properties beyond zero. After a quick review of the properties of exponents as they relate to negative exponents, the narrator works several examples for viewers. The examples start with simple, requiring only one...
Mathispower4u
Negative Exponent: Why Is a^(-1)=1/a?
Follow a pattern to develop an explanation. An engaging video uses the pattern of positive integer exponents to develop an explanation of the rule for negative powers. Using powers of three, each lower power is the previous one divided...
Corbett Maths
Dividing Algebraic Fractions
Do the keep, change, flip dance. The resource shows that the division of algebraic fractions follows the same rules as dividing numerical fractions. Pupils understand that if they can multiply rational expressions, they can divide...
Corbett Maths
Multiplying Algebraic Fractions
Make the complicated look relatively simple. The video shows how multiplication of algebraic fractions is easier when they factor the numerators and denominators. Pupils see which factors will cancel, or divide out, easier when writing...
Corbett Maths
Simplifying Algebraic Fractions
Simplification is about factoring. While working with rational expressions, pupils must know how to factor. The video shows how the process of finding common factors in algebraic fractions is similar to finding common factors in...
Corbett Maths
Adding Algebraic Fractions
The process requires the combination of several concepts. A video shows how individuals need several concepts to add rational expressions. Pupils must remember they need to find common denominators, combine like terms, and use the...
Crash Course
Big Data Problems: Crash Course Statistics #39
The big, the bad, and the ugly of data. The resource picks up from the description of big data and discusses the possible problems. Using examples, the 39th video in the series of Crash Course statistics explains how some use big data...
Krista King Math
Average Rate of Change of a Function
Just how fast is the function changing? The presenter provides a general explanation of the average rate of change in the 28th presentation in a series of 31 calculus videos. The video moves on to find the average rate of change for a...
Math Antics
The Pythagorean Theorem
Be sure the class gets this one right. Using a right triangle, the video introduces the Pythagorean Theorem. The presentation breaks down the theorem into its components while providing uses of the Pythagorean Theorem and its converse.
3Blue1Brown
Essence of Linear Algebra Preview
Make connections with linear algebra. The video introduces the concept of linear algebra and its geometric underpinnings. The resource makes the case that a complete understanding of linear algebra topics should include geometric...
Mathematics Assessment Project
Modeling Motion: Rolling Cups
Connect the size of a rolling cup to the size of circle it makes. Pupils view videos of cups of different sizes rolling in a circle. Using the videos and additional data, they attempt to determine a relationship between cup...
Mathed Up!
Angles in Triangles and Quadrilaterals
This short video show viewers how to connect the sum of the angles in a triangle to other angle measurements. Pupils determine the missing measures for angles involved with triangles and quadrilaterals. Class members then must explain...
Krista King Math
Distributive Property, Binomial Multiplication
The distributive property and FOIL are the same when it comes to binomial multiplication. The video demonstrates binomial multiplication using the distributive property. The presenter shows the general case and provides two...
Brightstorm
Dilations of Quadratic Graphs - Concept
Help learners recognize the characteristics of a quadratic graph and how changes affect them. An informative video uses a graphing calculator in order to find out what happens when the leading coefficient of a quadratic...
Welch Labs
Imaginary Numbers Are Real (Part 9: Closure)
The last video in a series about imaginary numbers demonstrates the need for complex numbers. Math pupils learn that they need to include the square root of negative one, the building block of the complex...
Welch Labs
Imaginary Numbers Are Real (Part 8: Math Wizardry)
How does the Fundamental Theorem of Algebra apply to equations with complex roots? Using recently learned concepts about the complex plane, learners determine all the complex roots of polynomials. They can find the same roots...