From b5702436d82837186e20d057082a00fb0cf00e88 Mon Sep 17 00:00:00 2001
From: 123456 <hoochanlon@outlook.com>
Date: Fri, 30 Jun 2023 23:55:33 +0800
Subject: [PATCH] Update readme.md

---
 有趣的3/readme.md | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/有趣的3/readme.md b/有趣的3/readme.md
index e98ff79..fb61961 100644
--- a/有趣的3/readme.md
+++ b/有趣的3/readme.md
@@ -1,3 +1,9 @@
+数学
+
+* https://www.mathplanet.com
+* https://www.mathsisfun.com
+* https://www.purplemath.com
+
 学术搜索库
 
 * 清华大学图书馆推荐网络学术站点系统：https://wr.lib.tsinghua.edu.cn