add check for choosing drill bit

diff --git a/curriculum/challenge-bot.scm b/curriculum/challenge-bot.scm
index e1e942240690b0738beb4618ebf61dd95b584441..72de0cff48333284c86fa70aa1880daedf92f4c5 100644 (file)
--- a/curriculum/challenge-bot.scm
+++ b/curriculum/challenge-bot.scm
@@ -48,7 +48,15 @@
      (p [here's a cross section of a screw in the deck]
         (figure :legend "screw cross section"
                 (image :file
-                       "arduino-to-deck/screw-cross-section.png"))))
+                       "arduino-to-deck/screw-cross-section.png")))
+     (p [check
+         ,(itemize
+           (item
+            [what would happen if the drill bit were larger than the
+                  screw thread?])
+           (item
+            [what would happen if the drill bit were smaller than the
+                  screw body?]))]))
     (subsubsection
      :title [inserting drill bit]
      (p (figure :legend "arduino to deck / insert bit"