0:00:06.149,0:00:11.059
When you use a repeat block to loop your code,[br]how does the computer know when it's repeated

0:00:11.059,0:00:16.610
enough times? The repeat block is actually[br]hiding a more sophisticated piece of code

0:00:16.610,0:00:22.840
called a for loop which counts from a starting[br]value up to an ending value by a specific

0:00:22.840,0:00:31.330
increment. For example, a repeat three block[br]counts from 1 to 3 by 1. Every time it counts,

0:00:31.330,0:00:36.500
it runs the code inside the loop. The for[br]loop knows how many times it has run by using

0:00:36.500,0:00:40.869
a counter variable which is set to the starting[br]value at the beginning of the loop and has

0:00:40.869,0:00:45.070
the increment added to it each time the loop[br]is run. As soon as the counter variable is

0:00:45.070,0:00:52.110
greater than the ending value, the loop stops[br]running. The benefit of using a real for loop

0:00:52.110,0:00:56.220
instead of the repeat block is that you can[br]actually see the counter variable and use

0:00:56.220,0:01:02.470
it in your loop. For example, if I have a[br]series of flowers and the first one has one

0:01:02.470,0:01:07.490
nectar, the second one has two nectars and[br]the third one has three, I can use the for

0:01:07.490,0:01:13.220
loop to tell the bee to collect 'counter'[br]nectars each time, which would one at the

0:01:13.220,0:01:18.900
first flower, two at the second and three[br]at the third. Also in a for loop, you can

0:01:18.900,0:01:23.690
increment the counter by a number other than[br]one each time. You can potentially count by

0:01:23.690,0:01:27.530
2s, 4s or even an amount that changes every[br]time through.