86 lines
1.4 KiB
Markdown
86 lines
1.4 KiB
Markdown
# looper block challenges
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Coding challenges for the looper.
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## Before we get started
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Complete the following guided activity:
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* [activity](/lessons/looper/activity)
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At the end of the activity, your code should look like this:
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```blocks
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for (let i = 0; i < 6; i++) {
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basic.showNumber(i)
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basic.pause(2000)
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}
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```
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## Challenge 1
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What if we want to count up to lucky number 7 instead? Let's do that by changing the ending value to `7` instead of `5`.
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```blocks
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for (let i = 0; i < 8; i++) {
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basic.showNumber(i)
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basic.pause(2000)
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}
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```
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* Run the program now to see your changes.
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## Challenge 2
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What about 9? Let's do that by changing the ending value to `9`.
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```blocks
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for (let i = 0; i < 10; i++) {
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basic.showNumber(i)
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basic.pause(2000)
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}
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```
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* Run your code to see the new counter.
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## Challenge 3
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Now let's start counting from `3` instead! Our for loop will always start at `0` so we simply add `3` to the `i` variable when passing it to `show number`.
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```blocks
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for (let i = 0; i < 10; i++) {
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basic.showNumber(i+3)
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basic.pause(2000)
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}
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```
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Run it on the simulator!
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## Challenge 4
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Now, let's **count down from 9**. Change the line `show number(i + 2, 150)` to `show number(9 - i, 150)`.
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```blocks
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for (let i = 0; i < 10; i++) {
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basic.showNumber(9-i)
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basic.pause(2000)
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}
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```
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* Run the code to make sure it is doing what is expected.
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## Challenge 5
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After counting down from `9` let's show the string `BOOOM`!
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