55 lines
1.0 KiB
Markdown
55 lines
1.0 KiB
Markdown
|
# counter quiz
|
||
|
|
||
|
Learn how to create a counter with the BBC micro:bit button.
|
||
|
|
||
|
## Name
|
||
|
|
||
|
## Directions
|
||
|
|
||
|
Use this activity document to guide your work in the [counter tutorial](/microbit/lessons/counter/activity).
|
||
|
|
||
|
Answer the questions while completing the tutorial. Pay attention to the dialogues!
|
||
|
|
||
|
## 1. What is a variable?
|
||
|
|
||
|
<br/>
|
||
|
|
||
|
## 2. Draw the stored value for the variable called count
|
||
|
|
||
|
```
|
||
|
let count = 0
|
||
|
```
|
||
|
|
||
|

|
||
|
|
||
|
<br/>
|
||
|
|
||
|
## 3. Draw which LEDs are ON after running this code and pressing button "A" once. Explain you chose to draw that number
|
||
|
|
||
|
```
|
||
|
let count_ = 0
|
||
|
input.onButtonPressed("A", () => {
|
||
|
count_ = count_ + 1
|
||
|
basic.showNumber(count_, 100)
|
||
|
})
|
||
|
```
|
||
|
|
||
|

|
||
|
|
||
|
<br/>
|
||
|
|
||
|
## 4. Draw which LEDs are ON after running this code and pressing button "A" three times. Explain you chose to draw that number
|
||
|
|
||
|
```
|
||
|
count_ = 0
|
||
|
input.onButtonPressed("A", () => {
|
||
|
count_ = count_ + 1
|
||
|
basic.showNumber(count_, 100)
|
||
|
})
|
||
|
```
|
||
|
|
||
|

|
||
|
|
||
|
<br/>
|
||
|
|