diff --git a/beautiful-racket-demo/simplex-demo/grammar.rkt b/beautiful-racket-demo/algebra-demo/grammar.rkt
similarity index 100%
rename from beautiful-racket-demo/simplex-demo/grammar.rkt
rename to beautiful-racket-demo/algebra-demo/grammar.rkt
diff --git a/beautiful-racket-demo/simplex-demo/main.rkt b/beautiful-racket-demo/algebra-demo/main.rkt
similarity index 94%
rename from beautiful-racket-demo/simplex-demo/main.rkt
rename to beautiful-racket-demo/algebra-demo/main.rkt
index e3ea920..bf9bfe2 100644
--- a/beautiful-racket-demo/simplex-demo/main.rkt
+++ b/beautiful-racket-demo/algebra-demo/main.rkt
@@ -32,5 +32,5 @@
   (define parse-tree (parse token-thunk))
   (strip-context
    (with-syntax ([PT parse-tree])
-     #'(module mod-name simplex-demo
+     #'(module mod-name algebra-demo
          PT))))
\ No newline at end of file
diff --git a/beautiful-racket-demo/simplex-demo/test.rkt b/beautiful-racket-demo/algebra-demo/test.rkt
similarity index 61%
rename from beautiful-racket-demo/simplex-demo/test.rkt
rename to beautiful-racket-demo/algebra-demo/test.rkt
index fda2067..093dd56 100644
--- a/beautiful-racket-demo/simplex-demo/test.rkt
+++ b/beautiful-racket-demo/algebra-demo/test.rkt
@@ -1,4 +1,4 @@
-#lang simplex-demo
+#lang algebra-demo
 fun f(x,y) = x + y 
 fun g(z) = f(z,z)
 g(10)
\ No newline at end of file