diff --git a/Advanced/Lambda Calculus/main.tex b/Advanced/Lambda Calculus/main.tex
index 3f834ed..3eb8c4d 100755
--- a/Advanced/Lambda Calculus/main.tex	
+++ b/Advanced/Lambda Calculus/main.tex	
@@ -1,7 +1,7 @@
 % use [nosolutions] flag to hide solutions.
 % use [solutions] flag to show solutions.
 \documentclass[
-	nosolutions,
+	solutions,
 	singlenumbering
 ]{../../resources/ormc_handout}
 
diff --git a/Advanced/Lambda Calculus/parts/00 intro.tex b/Advanced/Lambda Calculus/parts/00 intro.tex
index fb8d92e..eb136b1 100755
--- a/Advanced/Lambda Calculus/parts/00 intro.tex	
+++ b/Advanced/Lambda Calculus/parts/00 intro.tex	
@@ -12,11 +12,7 @@ This tells us that $I$ is a function that takes its input, $a$, to itself. We'll
 To apply functions, put them next to their inputs. We'll omit the usual parentheses to save space.
 
 $$
-	I ~ \star = (\lm a . a) ~ \star = \star
-$$
-
-$$
-(M~\star) =
+(I~\star) =
 (\lm \tzm{b}a. a)~\tzmr{a}\star =
 \star
 \begin{tikzpicture}[
diff --git a/Advanced/Lambda Calculus/parts/02 boolean.tex b/Advanced/Lambda Calculus/parts/02 boolean.tex
index 62de628..d303875 100755
--- a/Advanced/Lambda Calculus/parts/02 boolean.tex	
+++ b/Advanced/Lambda Calculus/parts/02 boolean.tex	
@@ -1,6 +1,6 @@
 \section{Boolean Algebra}
 
-The Kestrel selects its first argument, and the Kite selects its second. This \say{choosing} behavior is awfully similar to something you may have already seen...
+The Kestrel selects its first argument, and the Kite selects its second. This \say{choosing} behavior is similar to something you may have already seen...
 
 \vspace{1ex}
 
diff --git a/Advanced/Lambda Calculus/parts/03 numbers.tex b/Advanced/Lambda Calculus/parts/03 numbers.tex
index 3162211..8aee0a3 100755
--- a/Advanced/Lambda Calculus/parts/03 numbers.tex	
+++ b/Advanced/Lambda Calculus/parts/03 numbers.tex	
@@ -58,7 +58,7 @@ How about $(8~NOT~F)$?
 
 \problem{}
 This handout may remind you of Professor Oleg's handout on Peano's axioms. Good. \\
-While you're there, recall the tools we used to build the natural numbers: \\
+Recall the tools we used to build the natural numbers: \\
 We had a zero element and a \say{successor} operation so that $1 \coloneqq S(0)$, $2 \coloneqq S(1)$, and so on.
 
 \vspace{1ex}
diff --git a/Advanced/Lambda Calculus/parts/05 challenges.tex b/Advanced/Lambda Calculus/parts/05 challenges.tex
index 3d2d4a5..c8d9736 100755
--- a/Advanced/Lambda Calculus/parts/05 challenges.tex	
+++ b/Advanced/Lambda Calculus/parts/05 challenges.tex	
@@ -1,7 +1,6 @@
 \section{Challenges}
 
 Do \ref{Yfac} first, then finish the rest in any order. \\
-Have fun!
 
 \problem{}<Yfac>
 Design a recursive factorial function using $Y$. \\