Now you are ready to start subdividing your own shapes with more than 4 points!

In this AP Chemistry exam free response, students are ask to find the order of reaction based on graphs of absorbance, ln(absorbance) and 1/(absorbance) vs. time for kinetics of bleaching food coloring. This video explains how to solve...

Do you need to review Gibbs free energy and equilibrium constant of dehydration reaction for the AP Chemistry exam? This video works a free response question from the AP Chemistry exam. [12:22]

Virupa is shown as an unorthodox figure with bulging eyes, a bushy beard, a large nose, and an expressive face. He wears flowers in his hair and a meditation band around his knee to keep his limbs in place during prolonged meditation....

In this video [7:06] view important Buddhist sites and rituals in Tibet. Note: This video does not include narration.

In this video [3:52] discover the sacred arts of Tibet. Tibetans don't really have a word for art; the term is Gunda, something which is like the body of the Buddha. A painting or a statue is not considered complete and unless it's been...

Learn to use a virtual protractor to measure angles.

This is a short documentary [3:20] about one of India's most sacred cities, Varanasi. One of the holiest sites in India is Varanasi located along the banks of the river Ganges. Each year millions of pilgrims come to visit the sacred city...

This video shows how penicillin in bread mold kills bacteria. [3:02]

In this video, you'll find the materials and tools you'll need to build your own Vocal Visualizer, as well as all the necessary steps. [7:09]

Here's everything you'll need to build your own colored shadows. [2:12]

Learn how to make a simple"but effective"spectroscope out of an old CD and a cardboard tube in this video. [3:43]

In this video, you'll find the materials and tools you'll need to build your own penny battery, as well as all the necessary steps. [5:50]

This is an update on the Curiosity Rover in which the first candidate drill site found on Mars. [1:47]

Learn how hormones help to coordinate a baby's need for milk (sucking or crying) with a woman's release of milk. [6:52]

Learn the basic anatomy of the breast and how it's designed to nourish a baby with milk. [4:10]

Learn the mechanics of breathing, and how breathing air in is quite different from breathing air out. [12:04]

What is the internet? Short answer: a distributed packet-switched network. This is the introduction video to the series, 'How the Internet Works'. Vint Cerf, one of the 'fathers of the internet' explains the history of the net and how no...

Software engineer Tess Winlock introduces how the physical infrastructure of the Internet moves information. [6:41]

Programming is the process of creating a set of instructions that tell a computer how to perform a task. Programming can be done using a variety of computer 'languages,' such as SQL, Java, Python, and C++. [2:00]

Inventor and designer May-Li Khoe and virtual reality designer Nat Brown introduce the four features that all computers share. [5:09]

In a previous lesson we learned that there is the potential for two countries to gain from trade. But it is also possible that there might not be the potential to gain from trade. In this video, we explore the circumstance that would...

To illustrate what the functions of money are, it can help to look at circumstances where those functions break down. Hyperinflation, in which prices of things increase really really fast, is one such example. [11:43]

Watch a demonstration of how to approach questions that ask you to identify the role a statement plays in a passage on the Logical Reasoning section of the LSAT. [7:24]