diff --git a/README.md b/README.md
index 81dfb6c..ec773e9 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,9 @@
-## log
+# log
 
-test $TeX$
+## test $TeX$
 
 $ax^2+bx+c$
+
+## high school math resources
+
+https://www.geogebra.org/m/dyetmjzr