From the extinction of the dinosaurs to humanity.
Overview of fertilization and early human development. From conception leading to a zygote to blastocyst, embryo and fetus.
Introduction to hydrogen bonding in water.
Hydrogen bonding in water.
How hydrolysis can break down polysaccharides (carbohydrates) like starch, cellulose, chitin and glycogen.
Hypotonic, isotonic and hypertonic solutions (tonicity). Seeing the effect of various types of solution on the direction of osmosis.
The co-founder of the Internet Vint Cerf and software engineer Paola Mejia take us through the ins and outs of how networks talk to each other.
In this video we connect, bend and wire Bit-zee's IR sensor. This sensor will allow Bit-zee to receive commands from a universal remote control. Created by Karl Wendt.
Figuring out the acceleration of ice down a plane made of ice. Created by Sal Khan.
Introduction to the most common circuit elements: resistor, capacitor, and inductor. Introducing the current-voltage equations for these elements, including Ohm's Law for resistors. Created by Willy McAllister.
Introduction to the voltage source and current source. Created by Willy McAllister.
Identifying forces or force components acting as the centripetal force for a ball on a string moving in a horizontal circle.
Identifying forces or force components acting as the centripetal force for a car driving in a horizontal circle, a car driving in a vertical circle, and a satellite in orbit.
A worked example finding all force vectors acting on a pendulum moving in a horizontal circle.
Jessica introduces if's soulmate: else.
Jessica shows how to make your conditionals more powerful with "if else".
Jessica introduces if statements, a way for your program to decide whether or not to execute a block of code.
Impact of changes to trophic pyramids.
Example question exploring how mass impacts orbital speed.
Using an amino acid translation table to understand the impact of point and frameshift mutations.