Learning Resources by

Khan Academy

khanacademy.org




Resources

Free

Stereochemistry

Online class

Just like how your left foot doesn’t quite fit your right shoe, molecules also can have properties that depend on their handedness! This property is called chirality. We will go over what makes a...

Free

Stocks and bonds

Online class

Many people own stocks, but, unfortunately, most of them don’t really understand what they own. This tutorial will keep you from being one of those people (not keep you from owning stock, but keep...

Free

Structure and bonding

Online class

Let’s review the basics of chemical bonds including dot structures, hybridization, bond-line structures, electronegativity, and polarity. We will also discuss how bonding and intermolecular forces...

Free

Structure of a cell

Cell Biology   9th - College | Online class

You, my friend, are made up of cells. Lots and lots of them. Some of them are eukaryotic (human), but many more of them are prokaryotic, thanks to the friendly bacteria of your gut, skin, and other...

Free

Studying for AP Chemistry?

AP Chemistry   High School | Online class

2015 AP Chemistry free response 1e Writing the electron configuration of zinc, and figuring out which electron is removed during oxidation. From 2015 AP Chemistry free response 1e.

Free

Studying for the AP Biology exam?

AP Biology   High School | Online class

Prepare for the AP Biology exam by going through real free-response questions from the 2015 exam with Sal!

Free

Substitution and elimination reactions

Online class

Sn1, Sn2, E1, and E2 reactions form the basis for understanding why certain products are more likely to form than others. We will learn about the reaction mechanisms, and how nucleophilicity and...

Free

Supply, demand, and market equilibrium

Market Economics   High School - College | Online class

This tutorial (that only has one video) is an overview of what economics is. In particular it will tell you the difference between microeconomics (the subject you’re in right now) and...

Free

Surveys of history

US History   High School - College | Online class

The tutorials in this topic will take you on sweeping journeys through time so that you can get the really BIG picture for how things fit together.

Free

Symbolism & Art Nouveau

Online class

By the 1880s artists such as Klimt, Khnopff, and Stuck turned from the academies and focused on the interior self by exploring dreams, myth and death.

Free

Systems of equations

Online class

Whether in the real world or a cliche fantasy one, systems of equations are key to solving super-important issues like “the make-up of change in a troll’s pocket”. This tutorial shows you how to...

Free

Systems of equations

Online class

Here we’ll see that you may be able to actually solve for two unknowns if you have two different constraints or equations. You can view this solution as being represented by the intersection of the...

Free

Systems of linear equations

Online class

Systems of equations: trolls, tolls (1 of 2) A troll forces us to use algebra to figure out the make-up of his currency. We end up setting up a system of equations.

Free

Taxes

Personal Finance   High School - College | Online class

Benjamin Franklin (and several other writers/philosophers) tells us that “In this world nothing can be said to be certain, except death and taxes.” He’s right. This tutorial focus on personal...

Free

Telling time

Telling & Working With Time   Pre-K - 2nd | Online class

Free classes and courses available for online learning at every level: Elementary, High school, and College lessons.

Free

The 20th century

Online class

Called the Great War (before World War II came about), World War I was the bloody wake-up call that humanity was entering into a new stage of civilization. Really the defining conflict that took...

Free

The avant-garde: Realism, Impressionism and Post-Impressionism

Online class

Despite the brief dismantling of the Royal Academy during the French Revolution, art remained an extension of the power of the French State which regularly purchased art that it favored (often art...

Free

The Civil War era (1844-1877)

Civil War   8th - College | Online class

The end of slavery. The beginning of a new era. The biggest conflict ever to happen on American soil. What caused the Civil War and how did it change the United States?

Free

The coordinate plane

Online class

We first explored the coordinate plane in the 5th grade. But that was only dealing with positive coordinate. Now, however, we know all about negative numbers so why not have negative coordinates as...

Free

The Himalayas

Online class

Nepal Secrets of the stupa (Video) Tibet Sacred arts of Tibet (Video) Bön, Tibet’s indigenous belief system (Article) Views of Tibet (Video) Introduction to Tibetan Buddhism (Article) Tibetan...

Free

The historian's toolkit

Online class

Learning about history isn’t all grabbing golden idols from caves and running away from giant boulders. In this tutorial, learn the skills that historians use to interpret primary documents, write...

Free

The materials and techniques artists use

Online class

Ancient glass makers near Jerusalem discovered they could inflate hot glass to make vessels quickly and more cheaply. Watch this ancient technique (footage from t…

Free

The modern era (1980-present)

Online class

1980s America The presidency of Ronald Reagan issued in a more conservative era in the United States. The presidency of Ronald Reagan, part 1: Election and domestic policies Read about Reagan’s...

Free

The monetary system

Online class

Most modern economies use a counter-intuitive model of banking called “fractional reserve banking.” It is counter-intuitive (and some people would say wrong) because it allows banks to lend out...

Free

The Pacific

Art History   7th - College | Online class

The arts of the Pacific vary by virtue of ecological situations, social structure, and impact of external influences, such as commerce, colonialism, and missionary activity. Created in a variety of...