Flipped Math
Imaginary Numbers
Leave nothing to the imagination! Learners view a thorough lesson on imaginary numbers that introduces the concept, shows how to simplify square roots of negative numbers, and then how to solve quadratic equations with imaginary...
Welch Labs
Imaginary Numbers Are Real (Part 1: Introduction)
What are imaginary numbers? An introductory video provides an explanation as to why we need imaginary numbers to solve equations, and makes the connection between the need for zero, negative numbers, and rational numbers throughout history.
Welch Labs
Imaginary Numbers Are Real (Part 2: A Little History)
In some cases, a square root of a negative number must exist in order to determine the roots of a cubic equation. An educational presentation provides a specific example of a cubic with a known root to have an understanding of a square...
Krista King Math
Complex Fractions, Ratio and Proportion
Show the class two methods to solve proportions of fractions. The instructor shows that complex proportions can be solved by the normal method of cross-multiplying. It also shows another method where the complex fractions are simplified...
Curated OER
How Do You Simplify a Fraction Over a Whole Number?
Learn how to take a complex fraction and use the reciprocal rule of division to simplify the fraction.
Curated OER
How Do You Solve a Word Problem That Compares Two Complex Fractions?
Fractions, money, and a word problem? Write out an equation that has a fraction as the numerator of a fraction. Huh? Confusing? Don't give up! Watch the video as the instructor illustrates and explains how to solve this seemingly...
Curated OER
SpongeBob's House is Not a Pineapple
Who would have thought we could use SpongeBob as a mathematical example? A fantastically fun video that provokes higher thinking about the reality that SpongeBob's house might not actually be a pineapple based on its relation to the...
Fuse School
Why Aren't All Atomic Masses Whole Numbers?
Since an atom can't have a partial neutron, the atomic mass should always be a whole number, but it isn't! An interactive video lesson explains how the atomic mass number from the periodic table incorporates the isotopes of an element....
Krista King Math
Imaginary Numbers
Scholars learn to use their imagination in math class! The tutorial explains the origin of the number i and then simplifies expressions that include imaginary numbers. The examples include i raised to different powers, giving viewers...
TED-Ed
A Brief History of Numerical Systems
As people and civilizations have become more complex, numbers have evolved into what they are today. Watch a video that walks viewers through the history of the development of symbols into numbers and positional notations.
Curated OER
How Do You Simplify a Fraction Over a Fraction?
Complex fractions? They might start out complex, but if you watch the instructor explain how to change it to a division problem, it won't be so complex anymore.
Virtual Nerd
How Do You Find Higher Powers of i?
What is i raised to the 45th power? This video shows you how to break up the problem into a number of i raised to 4th power, and calculate what power is left over to calculate.
Crash Course
Redox Reactions
The breakdown of your breakfast and plants photosynthesizing all relate to the simple movement of electrons. Learn about the complex manner of redox reactions, where electrons move from one compound to another, changing and propelling...
Crash Course
Motion in a Straight Line
What is motion and why does it often follow a straight line? Share the video with your class so they understand the answers to this question and others. Pupils participate in discussions on displacement, acceleration, time, velocity and...
Curated OER
Equations And Inequalities
A number of problems involving inequalities and defining the variables are a piece of cake to Sal, and they will be to your Algebra pupils as well after they watch this video. Sal's careful explanation and clear annotations are key to...
Fuse School
Calculating Molar Volume Using Experimental Data
Calculating molar volume from experimental data often means the additional challenge of complex numbers and slight errors in measurement. The 23rd video in a 30-part series offers two types of experimental data to work from and models...
Khan Academy
SAT Prep: Test 3 Section 4 Part 4
Adding the values of angles, deciphering fraction word problems, and solving complex linear equations are all in a day's work for Sal, who will stop at nothing to help your students pass the SAT. His clear annotations and strong...
TED-Ed
Can You Solve the Giant Cat Army Riddle?
Dr. Schrodinger, the rat, has set a trap for anyone trying to destroy the growth ray he is using to create giant cats to attack the city. Viewers are challenged to escape his trap and save humanity in this rather complex math riddle.
Mystery of Matter
Into the Atom, Part 3: Numbering the Elements
Amazing scientific discoveries do not require fancy equipment. An interesting video lesson describes the process historical scientists used to identify the order of elements based on X-ray spectra. Learners discover the complex studies...
TED-Ed
Would You Sacrifice One Person to Save Five?
An ethical dilemma is, by definition, a complex situation that involves conflicting moral choices. The dilemma of this short video asks viewers whether they would sacrifice one life to save five.
Crash Course
Stress, Strain and Quicksand: Crash Course Engineering #12
A video flows naturally into a lesson on fluid mechanics. Viewers of an engaging YouTube video learn about the interaction of forces involving fluids. The 12th installment of the Crash Course Engineering series covers stress and strain,...
Khan Academy
Order of Operations
This resource shows how to evaluate complex statements using the order of operations. Mr. Khan explains that the parenthesis takes precedent, exponents are second, multiplication and division are the next to be solved, and addition and...
Flipped Math
Quadratic Formula
The quadratic formula is what works—always. Instruct your classes on the application of the quadratic formula using a thorough video lesson followed by provided practice problems. The lesson connects algebraic solutions to graphical...
Domain of Science
Why Is It Called a Square Root?
Take a radical look at square roots. The presentation examines square roots as the lengths of the sides of a square with a given area on the coordinate plane. Using this method, it is clear why the square root of a number can be positive...
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