Add more tasks, especially easy tasks

[vpavlenko]

The goal is to make slow-pacing students busy and studying, so not to have them struggle on hard problems without any success. Please, share your task ideas below.

[tomalley4]

section 2: if/else, mod

• ask students to predict the output (if/if/if, if/else, if/elif, if/elif/else); answer will sometimes be no output, sometimes multiple outputs, etc
• code whether an input is even or odd
• similar: code whether an input is a multiple of another input
• code whether an input is an integer
• code traffic light (if input is "red", print "stop"; green = go; yellow = caution; other = not a stoplight color)
• similar: code state of water (depending on input, print liquid, solid, or gas)