Outline:

1. The function of functions
   • defining a function
   • passing parameters
   • Exercise 1
2. Functions that return values
   • the return keyword
   • Exercise 3
3. Recap: values and side effects

Explore after class:

4. More practice with functions
   • Exercise 2
   • Exercise 4

Want more practice?

5. Runestone:
   • Function calls
   • Function parameters
   • Function return values (note: we haven’t seen conditionals like if yet, but that’ll come Friday!)
6. Codingbat:
   • Strings
   • Lists
   • Others: string_times, string_bits, string_splosion, big_diff

Reading assignment (to be completed by the next class):

• Zelle sections 6.1-6.5 (pp. 175-193)