The solutions below are suggestions. Programming is a creative process, and students may come up with different programs. 


Flowchart #1
'''
Flowchart #1
One possible solution
'''
from codex import *
from random import randrange


red = randrange(256)
green = randrange(256)
blue = randrange(256)


color = (red, blue, green)


pixels.set(0, color)
pixels.set(1, color)
pixels.set(2, color)
pixels.set(3, color)


Flowchart #2
'''
Flowchart #2
One possible solution
'''
from codex import *
from random import randrange


if buttons.was_pressed(BTN_A):
    red = randrange(256)
    green = randrange(256)
    blue = randrange(256)
    color = (red, green, blue)
    pixels.set(0, color)
    pixels.set(1, color)
    pixels.set(2, color)
    pixels.set(3, color)


if buttons.was_pressed(BTN_B):
    pixels.set(0, WHITE)
    pixels.set(1, WHITE)
    pixels.set(2, WHITE)
    pixels.set(3, WHITE)




Flowchart #3
'''
Flowchart #3
One possible solution
'''
from codex import *
from time import sleep


delay = 1
count = 0


display.show("Press B")
sleep(delay)


if buttons.was_pressed(BTN_B):
    pixels.set(0, GREEN)
    sleep(delay)
    count = count + 1
else:
    pixels.set(0, RED)
    sleep(delay)


display.show("Press A")
sleep(delay)


if buttons.was_pressed(BTN_A):
    pixels.set(1, GREEN)
    sleep(delay)
    count = count + 1
else:
    pixels.set(1, RED)
    sleep(delay)


display.show(str(count))


Flowchart #4
'''
Flowchart #4
One possible solution
'''
from codex import *
from random import randrange


while True:


    if buttons.was_pressed(BTN_A):
        red = randrange(256)
        green = randrange(256)
        blue = randrange(256)
        color = (red, blue, green)
        pixels.set(0, color)
        pixels.set(1, color)
        pixels.set(2, color)
        pixels.set(3, color)


    if buttons.was_pressed(BTN_B):
        break


Flowchart #5
'''
Flowchart #5
'''
from codex import *
from time import sleep


count = 0


while count < 3:


    display.show("Press A")
    sleep(1)
    if buttons.was_pressed(BTN_A):
        pixels.set(count, GREEN)
        count = count + 1


# Ending message--not indented
display.show("The END")


Flowchart #6
'''
Flowchart #6
'''
from codex import *
from time import sleep


while True:
    display.show(pics.HEART)
    sleep(delay)
    display.show(pics.HEART_SMALL)
    sleep(delay)


    if buttons.was_pressed(BTN_A):
        delay = delay + 0.2  
    if buttons.was_pressed(BTN_B):
        delay = delay - 0.2
    if delay < 0.2:
        delay = 0.2


    if buttons.was_pressed(BTN_U):
        break