The use of space in visual storytelling.
Speed necessary for the space station to stay in orbit. Created by Sal Khan.
Pamela explains the special predefined ProcessingJS functions that we use for drawing and interaction, like `draw()` and `mouseMoved()`.
Learn about speciation, including allopatric and sympatric speciation and mechanisms of reproductive isolation. Created by Sal Khan.
What a species is and isn't. Ligers, tiglons, mule, hinnies, and dogs.
In this video David explains what specific gravity means. He also shows how to calculate the value for specific gravity and use it to determine the percent of an object that will be submerged while floating.
Every light sources makes a different kind of rainbow, known as a spectrum.
An introduction to Specular and Diffuse Reflection. Created by Sal Khan.
An introduction to Specular and Diffuse Reflection, part 2. Created by Sal Khan.
Sal reflects on the amazing speed and precision with which DNA replication takes place.
How fast does sound actually travel? Created by David SantoPietro.
In this video we review some of the parts and tools you will need to build a spider bot. Created by Karl Wendt.
Understanding the Arduino Nano. Created by Karl Wendt.
Adding LED eyes. Created by Karl Wendt.
Understanding the bezel. Created by Karl Wendt.
In this video we show you how to hack a click n' stick tap light to make a body for Spider. Created by Karl Wendt.
In this video we show you how to connect and wire Spider's motor controller. Created by Karl Wendt.
Adding a power switch. Created by Karl Wendt.
Happy Valentines Day from Khan Academy Projects. Created by Karl Wendt.
Adding the stabilizer bar. Created by Karl Wendt.