Previewing the Photos
1 What about the nine photos makes them all similar to one another?
2 What about the nine photos makes them all different from one another?
Sorting the Photos
3 "Alt text," short for alternative text, is a short description added to images on a webpage to provide context for users who cannot see the image. Write a brief description of Photo 1 that could serve as alt text, describing the image for someone who cannot see it.
4 Which is more similar to Photo 1: Photo 2 or Photo 3? Explain how you decided which photo is more similar.
5 Write a brief description of Photo 4 that could serve as alt text, providing as much detail as you can.
6 Which is more similar to Photo 4: Photo 5 or Photo 6? Explain how you decided which photo is more similar.
Using the Coordinate Plane
7 We just thought about where these images would land on a coordinate grid with its axes labeled "body of water pixels" and "mountain pixels". Think of other possible labels for the x and y axes. How many can you come up with?
These materials were developed partly through support of the National Science Foundation, (awards 1042210, 1535276, 1648684, 1738598, 2031479, and 1501927). 
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