At the end of the activity, your code should look like this:
```blocks
for (let i = 0; i <6;i++){
basic.showNumber(i)
basic.pause(2000)
}
```
### Challenge 1
### @video td/videos/looper-1
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`.
```blocks
for (let i = 0; i <8;i++){
basic.showNumber(i)
basic.pause(2000)
}
```
* Run the program now to see your changes.
### Challenge 2
### @video td/videos/looper-2
What about 9? Let's do that by changing the ending value to `9`.
```blocks
for (let i = 0; i <10;i++){
basic.showNumber(i)
basic.pause(2000)
}
```
* Run your code to see the new counter.
### Challenge 3
### @video td/videos/looper-3
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`.
```blocks
for (let i = 0; i <10;i++){
basic.showNumber(i+3)
basic.pause(2000)
}
```
Run it on the simulator!
### Challenge 4
### @video td/videos/looper-4
Now, let's **count down from 9**. Change the line `show number(i + 2, 150)` to `show number(9 - i, 150)`.
```blocks
for (let i = 0; i <10;i++){
basic.showNumber(9-i)
basic.pause(2000)
}
```
* Run the code to make sure it is doing what is expected.
### Challenge 5
After counting down from `9` let's show the string `BOOOM`!
