diff --git a/src/boxed_primitives.md b/src/boxed_primitives.md
index d28e978..90e5947 100644
--- a/src/boxed_primitives.md
+++ b/src/boxed_primitives.md
@@ -24,7 +24,7 @@ void main() {
 }
 ```
 
-We call these primitives which might be null "Boxed Primitives" because you they are made by taking
+We call these primitives which might be null "Boxed Primitives" because they are made by taking
 the underlying thing and putting it in a "box."[^boxing]
 
 
diff --git a/src/boxed_primitives/boolean.md b/src/boxed_primitives/boolean.md
index 2de4fc6..49e68ea 100644
--- a/src/boxed_primitives/boolean.md
+++ b/src/boxed_primitives/boolean.md
@@ -8,5 +8,5 @@ The type to use for a `boolean` that might be null is `Boolean`.
 Boolean b = null;
 System.out.println(b);
 b = true;
-System.out.println(true);
+System.out.println(b);
 ~}
\ No newline at end of file
diff --git a/src/boxed_primitives/challenges.md b/src/boxed_primitives/challenges.md
index e44312c..d0506c4 100644
--- a/src/boxed_primitives/challenges.md
+++ b/src/boxed_primitives/challenges.md
@@ -28,7 +28,7 @@ void main() {
 
 ## Challenge 2.
 
-Write a method which takes in a `Integer[]` representing
+Write a method which takes in an `Integer[]` representing
 a series of distances and prints out every distance
 followed by ` kilometers`.
 
@@ -50,7 +50,7 @@ void printDistances(Integer[] distances) {
 }
 
 void main() {
-    printNames(new String[] {
+    printDistances(new Integer[] {
         45,
         99,
         23
diff --git a/src/boxed_primitives/character.md b/src/boxed_primitives/character.md
index 75c8493..acd43d3 100644
--- a/src/boxed_primitives/character.md
+++ b/src/boxed_primitives/character.md
@@ -11,7 +11,7 @@ System.out.println(c);
 ~}
 ```
 
-Unlike a `char[]`, a `Character[]` will not be have its contents
+Unlike a `char[]`, a `Character[]` will not have its contents
 shown when printed.
 
 ```java