Merge pull request enbifa#6 from aloncarmel/patch-1

Update Education.md

Author: enbifa

Categories/🏫 Education Assistant/Education.md

@@ -3,6 +3,10 @@
 This page lists a collection of 🏫 Education Assistant tools.
 
 ## Tools
+### [Wilco Sierra](https://trywilco.com/sierra)
+<a href="https://trywilco.com/sierra">
+   <img src="media/WilcoSierra.png" width="400" height="300">
+</a>
 
 ### [ELI5](https://explainlikeimfive.io)
 <a href="https://explainlikeimfive.io">
@@ -69,4 +73,4 @@ This page lists a collection of 🏫 Education Assistant tools.
 - **Pricing**: -
 
 
-[Go back](../README.md) [JSON](json/Education.json)
+[Go back](../README.md) [JSON](json/Education.json)