Answer:
orange box =

blue box =

Explanation:
We are counting up in quarters (1/4) so we add 1/4 (or a quarter) on every time.
1/4 + 1/4 = 2/4 = 1/2 (equivalent fractions)
2/4 + 1/4 = 3/4
3/4 + 1/4 = 4/4 = 1 whole = 1
1 + 1/4 = 1 1/4 = orange box
1 1/4 + 1/4 = 1 1/2 or 1 2/4
1 2/4 + 1/4 = 1 3/4 = blue box
etc
hope this makes sense.