diff --git a/01.curriculum/02.mathematic/01.niv1/default.en.md b/01.curriculum/02.mathematic/01.niv1/default.en.md
deleted file mode 100644
index 9a79c635b..000000000
--- a/01.curriculum/02.mathematic/01.niv1/default.en.md
+++ /dev/null
@@ -1,4 +0,0 @@
----
-title: plains
----
-
diff --git a/01.curriculum/02.mathematic/01.niv1/default.es.md b/01.curriculum/02.mathematic/01.niv1/default.es.md
deleted file mode 100644
index c665f52b6..000000000
--- a/01.curriculum/02.mathematic/01.niv1/default.es.md
+++ /dev/null
@@ -1,4 +0,0 @@
----
-title: llanuras
----
-