From 70841e6497ec3019ba428128ed5c25429ff8a3d8 Mon Sep 17 00:00:00 2001
From: Sophia <44385193+sdscodes@users.noreply.github.com>
Date: Thu, 21 Mar 2019 09:21:02 -0400
Subject: [PATCH] Add "Math Planet" (#27222)

Add learn Algebra on Math Planet as another source of learning
---
 guide/english/mathematics/algebra/index.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/guide/english/mathematics/algebra/index.md b/guide/english/mathematics/algebra/index.md
index d10467abfa..ca22bdba1d 100644
--- a/guide/english/mathematics/algebra/index.md
+++ b/guide/english/mathematics/algebra/index.md
@@ -14,6 +14,7 @@ Linear algebra: the study of vector spaces and linear mappings.
 <!-- Please add any articles you think might be helpful to read before writing the article -->
 [Wikipedia article](https://en.wikipedia.org/wiki/Algebra)  
 [Learn algebra on Khan Academy](https://www.khanacademy.org/math/algebra-home)
+[Learn  Algebra on Math Planet](https://www.mathplanet.com/education/pre-algebra/introducing-algebra)
 
 #### Resources:  
 - [Definition](https://www.merriam-webster.com/dictionary/algebra)