6_1

6_1

1. We are now in week 6, and we have learned a lot!

2. this week's topic is functions

3. you might know about functions from math

   • examples on wb.... f(x) = 2x - 1
     • be in front of whiteboard with MANY functions?

4. in our program we already have many functions

   • each of the "methods" in TheGame are in realityfunctions
     • they are just often called methods
   • Our functions do more than the maths functions
     • ok, we do perform calculations in them
     • but we also draw on the canvas of the mobile phone

5. this week we will investigate how we benefit from functions in programming, and what we can achieve using them