expand drilling into practice and screw hole

diff --git a/curriculum/challenge-bot.scm b/curriculum/challenge-bot.scm
index 2ebd03481528a8901033e6cedd87a1cec6968d41..e9c4d916cfa5e9a824464a865789eacf88a00acb 100644 (file)
--- a/curriculum/challenge-bot.scm
+++ b/curriculum/challenge-bot.scm
@@ -111,18 +111,56 @@
             [why not place the arduino up along the left side of the
                  robot?]))]))
     (subsubsection
-     :title [drilling]
-     (p [place the drill bit in position.
-               brint the drill up to full speed, and keep it full speed.
-               push down until the drill bit has passed through the
-               deck.
-               keep the drill at full speed.
-               stop before the drill smashes into the arduino.
-               keep the drill at full speed by holding the trigger.
-               bring the drill straight back up.
-               hold the trigger down to keep the drill at full speed.
-               once the drill is back out of the hole, let go of the
-               trigger.])
+     :title [drilling practice]
+     (p [strength check]
+        (itemize
+         (item [put on safety goggles])
+         (item [unplug drill])
+         (item [hold drill in one hand])
+         (item [point drill at the ground])
+         (item [point drill at the wall])))
+     (p [steps for drilling into wood block]
+        (itemize
+         (item [plug in the drill])
+         (item [place the drill bit in position])
+         (item [bring the drill up to full speed, and keep it at full
+                      speed while lowering and raising the drill])
+         (item [push down until the drill bit has passed through an inch
+                     of the wood block])
+         (item [keep the drill at full speed])
+         (item [stop before the drill smashes into the wood block])
+         (item [keep the drill at full speed by holding the trigger])
+         (item [bring the drill straight back up])
+         (item [hold the trigger down to keep the drill at full speed])
+         (item [once the drill is back out of the hole, let go of the
+                     trigger])))
+     (p [check
+         ,(itemize
+           (item
+            [should the drill be at full speed while the drill bit is
+                    going down into the wood and coming back up?])
+           (item
+            [how do you keep the drill at full speed?])
+           (item
+            [what would happen if the drill bit were not at full
+                  speed?])
+           (item
+            [what would happen if the drill were twisted sideways while
+                  the drill bit were in the wood?]))]))
+    (subsubsection
+     :title [drilling screw hole]
+     (itemize
+      (item [place the drill bit in position])
+      (item [bring the drill up to full speed, and keep it full speed])
+      (item [push down until the drill bit has passed through the
+                  deck])
+      (item [keep the drill at full speed])
+      (item [stop before the drill smashes into the arduino])
+      (item [keep the drill at full speed by holding the trigger])
+      (item [bring the drill straight back up])
+      (item [hold the trigger down to keep the drill at full speed])
+      (item [once the drill is back out of the hole, let go of the
+                  trigger]))
      (p [check
          ,(itemize
            (item