diff --git a/functions.Rmd b/functions.Rmd
index f88e532..5635dd2 100644
--- a/functions.Rmd
+++ b/functions.Rmd
@@ -129,7 +129,7 @@ rescale01(x)
 
 This is an important part of the "do not repeat yourself" (or DRY) principle. The more repetition you have in your code, the more places you need to remember to update when things change (and they always do!), and the more likely you are to create bugs over time.
 
-### Practice
+### Exercises
 
 1.  Why is `TRUE` not a parameter to `rescale01()`? What would happen if
     `x` contained a single missing value, and `na.rm` was `FALSE`?
diff --git a/workflow-basics.Rmd b/workflow-basics.Rmd
index 6c7d2ad..81f2225 100644
--- a/workflow-basics.Rmd
+++ b/workflow-basics.Rmd
@@ -128,7 +128,7 @@ knitr::include_graphics("screenshots/rstudio-env.png")
 
 Here you can see all of the objects that you've created.
 
-## Practice
+## Exercises
 
 1.  Why does this code not work?
 
diff --git a/workflow-scripts.Rmd b/workflow-scripts.Rmd
index 8ff90b3..5442cd0 100644
--- a/workflow-scripts.Rmd
+++ b/workflow-scripts.Rmd
@@ -50,7 +50,7 @@ RStudio will also let you know about potential problems:
 knitr::include_graphics("screenshots/rstudio-diagnostic-warn.png")
 ```
 
-## Practice
+## Exercises
 
 1.  Go to the RStudio Tips twitter account, <https://twitter.com/rstudiotips>
     and find one tip that looks interesting. Practice using it!