Week 04 · Loop Logbooks
Wednesday
Repeat steps times
// Track a box through every lap
⏱ about 15 min
A box can count laps!
Nova finds a new kind of repeat line.
It does not say 3 times or 4 times.
It says repeat steps times.
Rocket scratches his head.
How many laps is that?
Raven smiles. Look inside the steps box!
WARM-UP: SAY IT EVERY LAP
- Nova speaks every lap.
- Tap the last number.
set steps to 0
repeat 3 times:
change steps by 1
say steps
?
set height to 4
repeat 2 times:
lower height by 1
say height
?
Repeat steps times
Nova peeks in the steps box.
The box holds 3.
So the loop runs 3 laps.
set steps to 3 repeat steps times: flash lights stop land
Change the box, change the laps
Set steps to 5 instead.
Now the loop runs 5 laps.
One number changes the whole loop!
HOW MANY LAPS?
- Peek in the box.
- Tap the answer.
set steps to 4
repeat steps times:
flash lights
?
set steps to 2
change steps by 1
repeat steps times:
clap wings
?
set steps to 5
set count to 0
repeat steps times:
change count by 1
stop
say count
?
Build a flight with 3 flashes.
Steps starts at 2.
Add one before the loop.
BUILD A FLIGHT WITH 3 FLASHES
- Fill the box, add one, then loop.
1line 1
2line 2
3line 3
4line 4
What do you notice?
Fill the box before the repeat.
An empty box means zero laps.
set steps to 2 set height to 1 repeat steps times: change height by 2 stop say height
Each lap adds 2 to height.
| after | height | true? |
|---|---|---|
| line 2 | 1 | ? |
| lap 1 | 3 | ? |
| lap 2 | 4 | ? |
| Nova says | 5 | ? |
TRICKY ONES!
- Read every line carefully.
- Tap what Nova says.
set count to 0
repeat steps times:
change count by 1
stop
say count
?
set steps to 2
set count to 5
repeat steps times:
lower count by 2
stop
say count
?
The box counted the laps!
Repeat steps times peeks in the box.
The box sets the number of laps.
Fill the box first!
Great work, Crew!