diff --git a/src/closures/exercise.md b/src/closures/exercise.md
index efb210b5..448ca213 100644
--- a/src/closures/exercise.md
+++ b/src/closures/exercise.md
@@ -4,8 +4,8 @@ minutes: 10
 
 # Exercise: Log Filter
 
-Building on the generic logger from this morning, implement a `Filter` which
-uses a closure to filter log messages, sending those which pass the filtering
+Building on the generic logger from this morning, implement a `Filter` that uses
+a closure to filter log messages, sending those that pass the filtering
 predicate to an inner logger.
 
 ```rust,compile_fail,editable
diff --git a/src/closures/traits.md b/src/closures/traits.md
index 1cc391a4..1b7a9bc5 100644
--- a/src/closures/traits.md
+++ b/src/closures/traits.md
@@ -4,7 +4,7 @@ minutes: 10
 
 # Closure traits
 
-Closures or lambda expressions have types which cannot be named. However, they
+Closures or lambda expressions have types that cannot be named. However, they
 implement special [`Fn`](https://doc.rust-lang.org/std/ops/trait.Fn.html),
 [`FnMut`](https://doc.rust-lang.org/std/ops/trait.FnMut.html), and
 [`FnOnce`](https://doc.rust-lang.org/std/ops/trait.FnOnce.html) traits:
@@ -67,7 +67,7 @@ can (i.e. you call it once), or `FnMut` else, and last `Fn`. This allows the
 most flexibility for the caller.
 
 In contrast, when you have a closure, the most flexible you can have is `Fn`
-(which can be passed to a consumer of any of the 3 closure traits), then
+(which can be passed to a consumer of any of the three closure traits), then
 `FnMut`, and lastly `FnOnce`.
 
 The compiler also infers `Copy` (e.g. for `add_suffix`) and `Clone` (e.g.