diff --git a/00.brainstorming-pedagogical-teams/45.synthesis-structuring/10.math-tools/40.n4/textbook.es.md b/00.brainstorming-pedagogical-teams/45.synthesis-structuring/10.math-tools/40.n4/textbook.es.md
index ac7166d8e..ccbab0aea 100644
--- a/00.brainstorming-pedagogical-teams/45.synthesis-structuring/10.math-tools/40.n4/textbook.es.md
+++ b/00.brainstorming-pedagogical-teams/45.synthesis-structuring/10.math-tools/40.n4/textbook.es.md
@@ -3,10 +3,14 @@ title: Lluvia de ideas sobre las herramientas matemáticas necesarias en cada ni
 published: true
 routable: true
 visible: false
+---
+
+<!----------------------------------------------
 lessons:
     - slug: brainstorming-234-mathematical-tools
       order: 3
----
+------------------------------------------------>
+
 
 #### Lluvia de ideas sobre las herramientas matemáticas necesarias en el nivel 4