clarify how to screw in first screw

diff --git a/curriculum/challenge-bot.scm b/curriculum/challenge-bot.scm
index beefcb478d56110690adea9ffa0535f50fc85f6a..33d47532d7a3978358329d87a193241bf68e221c 100644 (file)
--- a/curriculum/challenge-bot.scm
+++ b/curriculum/challenge-bot.scm
@@ -207,11 +207,12 @@
                         the screw?]))]))
     (subsubsection
      :title [fasten the arduino board to the deck]
-     (p [push the 6-32 screw into the deck from the underside and at the
-              same time, spin the 6-32 screw clockwise while looking
-              down on its head.
-              twist until the bottom of the screw is
-              about to stick out on the top side of the deck.])
+     (p [push the #6-32 screw into the deck from the underside.
+              the underside is the brown side.
+              at the same time, spin the 6-32 screw so it rotates
+              clockwise while looking down on its head.
+              twist until the tip of the screw is about to stick out on
+              the top side of the deck.])
      (p [hold the arduino board flat to the deck and line up the arduino
               hole so the screw can come up through it.
               continue tightening the screw into the deck, spinning the same