diff --git a/src/m1e_comments_strings_print.py b/src/m1e_comments_strings_print.py
index 18eb8a0..df25506 100644
--- a/src/m1e_comments_strings_print.py
+++ b/src/m1e_comments_strings_print.py
@@ -14,3 +14,4 @@
 print('one', 'two', 'buckle my shoe')
 print(3 + 9)
 print('3 + 9', 'versus', 3 + 9)
+print('dabin choi')
diff --git a/src/m2_hello_world.py b/src/m2_hello_world.py
index aaa506a..4f2912c 100644
--- a/src/m2_hello_world.py
+++ b/src/m2_hello_world.py
@@ -13,7 +13,7 @@
 
 ########################################################################
 #
-# TODO: 1.
+# DONE: 1.
 #   (Yes, that means for YOU to DO things per these instructions:)
 #
 #   Run this module by right clicking anywhere in this window and select
@@ -26,7 +26,7 @@
 
 ########################################################################
 #
-# TODO: 2.
+# TOD: 2.
 #   Notice the small horizontal BLUE bars on the scrollbar-like thing
 #   on the right.  Each blue bar indicates a TO DO in this module.
 #
@@ -34,7 +34,7 @@
 #        by clicking on the blue bars.  ** Try that now. **
 #
 #     b. When you have completed a TO DO, you should change the word
-#          TODO
+#          TO DO
 #        to
 #          DONE.
 #        Try it now on line 16 above, and note that its blue bar on
@@ -51,7 +51,7 @@
 
 ########################################################################
 #
-# TODO: 3.
+# TO DO: 3.
 #   Add another   print   statement below.
 #   It should print any string that you want (but keep it G-rated!)
 #   Test your code by re-running this module using either the right click
@@ -59,10 +59,10 @@
 #   Look at the Console to be sure that your string printed as expected.
 #
 ########################################################################
-
+print('hi class')
 ########################################################################
 #
-# TODO: 4.
+# TO DO: 4.
 #   Add yet another   print   statement.
 #   This one should print the *product* of 3,607 and 34,227.
 #   Let the computer do the arithmetic for you (no calculators!).
@@ -73,10 +73,11 @@
 #   (HINT: It is an INTERESTING number.)  Get help if your value is wrong.
 #
 ########################################################################
+print(3607*34227)
 
 ########################################################################
 #
-# TODO: 5.
+# T ODO: 5.
 #   Look at the list of files in this project to the left.
 #   Note that this file (m2_hello_world.py) is now displayed in a blue
 #   font color (if the file is highlighted select a different file so yu can
diff --git a/src/m3_turtles.py b/src/m3_turtles.py
index df507f3..29c1ed3 100644
--- a/src/m3_turtles.py
+++ b/src/m3_turtles.py
@@ -10,11 +10,11 @@
   -- ASSIGNING a VALUE to a NAME (VARIABLE).
 
 Authors: David Mutchler, Dave Fisher, Valerie Galluzzi, Amanda Stouder,
-         their colleagues and PUT_YOUR_NAME_HERE.
+         their colleagues and dabin.
 """
 ########################################################################
 #
-# TODO: 1.
+# DONE: 1.
 #  (Yes, that means for YOU to DO things per these instructions:)
 #
 # On Line 13 above, replace  PUT_YOUR_OWN_NAME_HERE  with your OWN name.
@@ -29,7 +29,7 @@
 
 ########################################################################
 #
-# TODO: 2.
+# DONE: 2.
 #   Allow this file to use the rosegraphics.py file by marking the src
 #   directory as a "Sources Root".  Do that by right clicking on the src folder,
 #   then selector  Mark Directory As --> Sources Root
@@ -69,15 +69,15 @@
 # ----------------------------------------------------------------------
 matt = rg.SimpleTurtle('turtle')
 matt.pen = rg.Pen('red', 30)
-matt.speed = 10  # Faster
+matt.speed = 20  # Faster
 matt.backward(50)
 matt.left(90)
 matt.forward(50)
-
-
+matt.draw_circle(10)
+matt.forward(50)
 ########################################################################
 #
-# TODO: 3.
+# DONE: 3.
 #   Add a few more line of your own code above to make one of the
 #   existing Turtles move some more and/or have different
 #   characteristics.
@@ -85,13 +85,14 @@
 #      ** Nothing fancy is required. **
 #      ** A SUBSEQUENT exercise will let you show your creativity. **
 #
-#   As always, test by running the module.
+#   As always, test by runn
+# ing the module.
 #
 ########################################################################
 
 ########################################################################
 #
-# TODO: 4.
+# T ODO: 4.
 #   The code above  CONSTRUCTS  two SimpleTurtle objects and gives those objects NAMES:
 #       dave    matt
 #
@@ -109,10 +110,16 @@
 #   As always, test by running the module.
 #
 ########################################################################
+Dabin = rg.SimpleTurtle('turtle')
+Dabin.pen = rg.Pen('blue', 30)
+Dabin.right(45)
+Dabin.speed =10
+Dabin.forward(50)
+Dabin.draw_circle(50)
 
 ########################################################################
 #
-# TODO: 5.
+# TO DO: 5.
 #   Run one more time to be sure that all is still OK.
 #   Ensure that no blue bars on the scrollbar-thing to the right remain.
 #
diff --git a/src/m4e_loopy_turtles.py b/src/m4e_loopy_turtles.py
index 168df44..780c3b0 100644
--- a/src/m4e_loopy_turtles.py
+++ b/src/m4e_loopy_turtles.py
@@ -28,6 +28,7 @@
  * ASSIGNMENT and NAMES
   -- ASSIGNING a VALUE to a NAME (VARIABLE), as in these examples:
         jack = 45
+
         jill = 'ran down the hill'
         size = size - 12
   -- The computer's STATE during a run of a program is the set
diff --git a/src/m5_your_turtles.py b/src/m5_your_turtles.py
index d9de2a6..ac86883 100644
--- a/src/m5_your_turtles.py
+++ b/src/m5_your_turtles.py
@@ -2,15 +2,15 @@
 Your chance to explore Loops and Turtles!
 
 Authors: David Mutchler, Dave Fisher, Valerie Galluzzi, Amanda Stouder,
-         their colleagues and PUT_YOUR_NAME_HERE.
+         their colleagues and Dabin
 """
 ########################################################################
-# TODO: 1.
+# Done
 # On Line 5 above, replace  PUT_YOUR_NAME_HERE  with your own name.
 ########################################################################
 
 ########################################################################
-# TODO: 2.
+# Done
 #
 #  You should have RUN the PREVIOUS module and READ its code.
 #  (Do so now if you have not already done so.)
@@ -28,3 +28,41 @@
 #
 #  Don't forget to COMMIT your work by using  VCS ~ Commit and Push.
 ########################################################################
+
+import rosegraphics as rg
+Dabin=rg.SimpleTurtle('turtle')
+
+Dabin.pen=rg.Pen('red',15)
+a=100
+b=350
+
+for k in range(3):
+    Dabin.pen_up()
+    Dabin.left(90)
+    Dabin.forward(100)
+    Dabin.right(90)
+    Dabin.pen_down()
+    Dabin.left(-45)
+    Dabin.backward(a)
+    Dabin.left(45)
+    Dabin.backward(a)
+    Dabin.left(45)
+    Dabin.backward(a)
+    Dabin.left(45)
+    Dabin.backward(a)
+    Dabin.left(45)
+    Dabin.backward(b)
+    Dabin.left(90)
+    Dabin.backward(b)
+    Dabin.left(45)
+    Dabin.backward(a)
+    Dabin.left(45)
+    Dabin.backward(a)
+    Dabin.left(45)
+    Dabin.backward(a)
+    Dabin.left(45)
+    Dabin.backward(a)
+    a=a-20
+    b=b-70
+
+