Merge branch 'week4-changes' into 'UACCESS-23fa'

added announcment

See merge request undergrad-accessibility-website!47

slides/access-trees.html

@@ -28,6 +28,8 @@ class:
 ---
 # Announcements
 
+UARS: How many -- one per tech minimum; give an example of a success if you find no problems. 
+
 Reminder: what to do if you miss a class 
 
 Reminder: regrades