RMarkdown collapsible panel

Question

As I am preparing tutorials for students, I need a way to hide content in collapsible panels which can be revealed by clicking on a button. I have got this to work using the cod

Answer 1

Another simple solution that would work (but without buttons and styling).

```{r, eval=FALSE}
hist(1:10)
```


  
Click for Answer
    ```{r, echo=FALSE, eval=TRUE}
    hist(1:10)
    ```
 

And here are the two states:

Collapsed

Expanded