Khan Academy
Khan Academy: The Structure and Function of Globular Proteins
The structure of a machine's parts in relation to one another and the proper functioning of the machine itself, applies not just to the machines is, but also to the ones at work inside our bodies. These molecular machines, called...
PBS
Pbs: Horizontal and Vertical Distances on the Cartesian Graph
In this interactive, students use logic and mathematical skill to place aquatic animals at locations on a Cartesian graph with cardinal directions. Then, they determine both the vertical and horizontal distances between points. The...