Update _index.md

Author: pingswept

content/_index.md

@@ -8,4 +8,9 @@ draft: false
 
 _Design for Fabrication_ is an engineering design class first taught by Brandon Stafford in the spring of 2020 at Tufts University, now returning for spring 2023.
 
-The point of the class is to provide you with hands-on experience in engineering fabrication.
+The point of the class is to provide you with hands-on experience in engineering fabrication. We build a wide variety of mechanisms and mechanical devices in the class.
+
+Below are puzzle balls built by teams of 3 or 4 people. This seems like an exercise in CAD and 3D printing, but it's actually about collaboration.
+
+![](/img/puzzle-balls-2023-cropped.jpg)
+![](/img/puzzle-balls-2023-closeup.jpg)