1. Global Challenge
Fitness Friend
Lesson 3

2. We need to: design a Fitness Friend:
a wearable device that will give an audio and visual reminder every 25 minutes to do some exercise.

3. Input Start button pressed
Fitness friend algorithms
When START button pressed:
REPEAT
Count 25 minutes ( seconds)
OUTPUT audio beep for 1 second
OUTPUT visual display ‘Move!’
When STOP button pressed, STOP.
Input Start button pressed
Count 25 minutes
Output
Audio beep 1 second
Output
Visual display ‘Move!’
Is stop button pressed? No
Yes
Stop

4. Learning objectives:
To follow an algorithm to write a program to create a ‘Fitness Friend’
To use paired programming and understand why it is helpful
To test and debug code

5. Paired programming 2 programmers working together to code
One types the code (driver)
One watched the driver, checks the code, makes suggestions (navigator)
work collaboratively, talking through problems
Why might this be helpful?
more accurate code written in shorter time
can collaboratively work through problems

6. Sample code for basic Fitness Friend
Actual
For testing

7. Sample code for Fitness Friend with stop & start buttons
Actual
For testing

8. Explaining your code
Talk through the code to explain what each block does.
Why have you used those particular blocks?
What alternative ways could you have coded the ‘Fitness Friend’?
Why did you choose this way?
What problems did you encounter and how did you overcome them?

9. Learning objectives:
To follow an algorithm to write a program to create a ‘Fitness Friend’
To use paired programming and understand why it is helpful
To test and debug code