Teaching Notes

To help students understand a digital representation, show them an image and ask how it could be stored in a computer. (Break it into pixels, set up a grid, and write a code for the stream of pixels.) You can also ask how to go from a stream of ones and zeroes to an image. (Set up a grid that matches the stream of data, find the starting point that matches the data, and fill in pixels across the image in the direction that matches the data.) If you have a limited number of computers, consider starting different groups at different steps in For You To Do.