Week 03 · Count With a Box
Tuesday
Repeat does the counting
// A steps box counts every round
⏱ about 15 min
Repeat and count!
Rocket counted steps the long way yesterday.
It took so many lines!
Raven remembers a power from Grade 1.
A repeat line runs the lines under it.
Can a repeat and a box work together?
Nova beeps. Let us test it!
WARM-UP: COUNT BY HAND
- Count the change lines.
- Tap what Nova says.
set steps to 0
change steps by 1
change steps by 1
say steps
?
set steps to 3
change steps by 1
say steps
?
Repeat and a box
The repeat runs all the lines under it.
Move, count. Move, count. Move, count.
Steps ends at 3!
set steps to 0 repeat 3 times: move right change steps by 1
What do you notice?
Start at 0. Add 1 each round.
The count matches the repeat number!
COUNT WITH REPEAT
- Read the repeat number.
- Tap what steps holds at the end.
set steps to 0
repeat 2 times:
change steps by 1
?
set steps to 0
repeat 4 times:
move right
change steps by 1
?
set steps to 1
repeat 3 times:
change steps by 1
?
Build a counter with a repeat.
Count 3 steps the short way.
BUILD A REPEAT COUNTER
- Start at 0 on top.
- Put the repeat above the lines it runs.
1line 1
2line 2
3line 3
4line 4
Set goes above the repeat
The set line runs once, at the start.
Under the repeat, it would run every round!
TRICKY COUNTERS!
- Find the lines under the repeat.
- Tap what steps holds at the end.
repeat 3 times:
set steps to 0
change steps by 1
?
set steps to 0
repeat 2 times:
change steps by 2
?
Only a change line makes the count grow.
| program | steps ends at 3? |
|---|---|
| set steps to 0, repeat 3 times: change steps by 1 | ? |
| set steps to 0, repeat 2 times: change steps by 1 | ? |
| set steps to 1, repeat 2 times: change steps by 1 | ? |
| set steps to 0, repeat 3 times: move right | ? |
Repeat counted for you!
The repeat runs the lines under it.
A change line inside counts every round.
See you tomorrow, Crew!