Updated mooc_nested_dict materials to the book

Author: xinyinghou

_sources/_hidden/mooc_nested_dict/index.rst

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+.. toctree::
+   :hidden:
+   :maxdepth: 2
+
+   _hidden/start.rst
+   _hidden/intro.rst
+   _hidden/review.rst
+   _hidden/pre_survey.rst
+   _hidden/nested-wt.rst
+   _hidden/nested-nt.rst
+   _hidden/posttest.rst
+   _hidden/post_survey.rst

_sources/_hidden/mooc_nested_dict/intro.rst

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+Introduction to Problem Types
+=============================
+
+Please read the following, watch the videos, and try to solve the problems.
+
+
+Solving Mixed-up Code Problems
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+If you see a problem like the one below you will need to put the mixed-up
+code in the correct order on the right side. You
+may need to indent the blocks as well.  There may also be extra blocks that are not
+needed in a correct solution that you can leave on the left side. Click the "Check" button
+to check your solution.
+
+See the video below for an example.
+
+.. youtube:: Rf7oWHlo-e0
+    :divid: iwgex1-parsons1-mooc_nested
+    :optional:
+    :width: 650
+    :height: 415
+    :align: center
+
+Try to solve the following mixed-up code problem.  This problem doesn't require any indentation.
+
+.. parsonsprob:: intro-simple-parsons-no-indent-mooc_nested
+   :numbered: left
+   :adaptive:
+   :practice: T
+   :order: 3, 1, 2, 0
+
+   Drag the blocks from the left and put them in the correct order on the right. The text in each block
+   defines the order.
+   -----
+   First block
+   =====
+   Second block
+   =====
+   Third block
+
+Try to solve the following mixed-up code problem. This problem requires indentation.
+
+.. parsonsprob:: intro-simple-parsons-indent-mooc_nested
+   :numbered: left
+   :adaptive:
+   :practice: T
+   :order: 3, 1, 2, 0
+
+   Drag the blocks from the left and put them in the correct order on the right with the correct indentation.
+   The text in each block defines the order and indentation.
+   -----
+   First block
+   =====
+   Second block
+   =====
+       Third block that needs to be indented
+
+Try to solve the following mixed-up code problem. This problem requires indentation and has extra blocks that are not needed in a correct solution.
+
+.. parsonsprob:: intro-simple-parsons-indent-with-dist-mooc_nested
+   :numbered: left
+   :adaptive:
+   :practice: T
+   :order: 3, 1, 2, 0
+
+   Drag the blocks from the left and put them in the correct order on the right with the correct indentation.
+   There is an extra block that is not needed in the correct solution.
+   -----
+   First block
+   =====
+   Second block
+   =====
+   Extra block that is not needed #paired: This block is not needed
+   =====
+       Third block that needs to be indented
+
+The mixed-up code problems have a "Help me" button at the bottom of the
+problem. Once you have checked at least three incorrect solutions you can
+click the button for help.  It will remove an incorrect code block, if you used
+one in your solution, or combine two blocks into one if there are more
+than three blocks left.
+
+See the video below for an example.
+
+.. youtube:: QejZ7u642IU
+    :divid: iwgex1-parsons2-mooc_nested
+    :optional:
+    :width: 650
+    :height: 415
+    :align: center
+
+Solving Write Code Problems
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+If you see a problem like the one below, you will need to write code.  The problem
+will have unit tests that you can run to check that your code is working
+correctly.  Click on the "Run" button to compile and run your code.  Look after
+the code area for compiler errors and/or unit test results.
+
+See the video below for an example.
+
+.. youtube:: w9hTOJ7iJpE
+    :divid: mooc_nested-write-code-video-ex
+    :optional:
+    :width: 1020
+    :height: 826
+    :align: center
+
+Finish writing the code for the following problem.
+
+.. activecode:: intro-sample-write-code-triple-mooc_nested
+    :practice: T
+    :autograde: unittest
+
+    Write a function called ``triple(num)`` that takes a number ``num`` and
+    returns the number times 3. For example, ``triple(2)`` should return 6 and
+    ``triple(-1)`` should return -3.  Look below the code to check for any
+    compiler errors or the results
+    from the test cases.  Be sure to ``return`` the result.
+    ~~~~
+    def triple(num):
+        # write code here
+
+    print(triple(2))
+    print(triple(-1))
+
+    ====
+    from unittest.gui import TestCaseGui
+    class myTests(TestCaseGui):
+
+        def testOne(self):
+            self.assertEqual(triple(2),6,"triple(2)")
+            self.assertEqual(triple(3),9,"triple(3)")
+            self.assertEqual(triple(-1),-3,"triple(-1)")
+            self.assertEqual(triple(0),0,"triple(0)")
+            self.assertEqual(triple(11),33,"triple(11)")
+
+    myTests().main()
+
+.. parsonsprob:: intro-sample-puzzle-mooc_nested
+    :numbered: left
+    :adaptive:
+    :practice: T
+
+    Write a function called ``triple(num)`` that takes a number ``num`` and
+        returns the number times 3. For example, ``triple(2)`` should return 6 and
+        ``triple(-1)`` should return -3.   
+    -----
+    def triple(num): 
+    =====
+        return num * 3
+
+
+Solving Write Code Problems with an Adaptive Mixed-up Puzzle as Scaffolding
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+If you see a problem like the one below, you will need to write code. You can go to the **toggle bar** above the problem description to open a mixed-up puzzle that will help you write the code. 
+The mixed-up puzzle will have blocks of code that you can drag and drop to create a solution. You can also use the "Help me" button to get additional assistance if needed.
+
+.. selectquestion:: intro-sample-toggle-mooc_nested
+    :fromid: intro-sample-write-code-triple-mooc_nested, intro-sample-puzzle-mooc_nested
+    :toggle: lock
+
+
+What to do next
+===============
+
+.. raw:: html
+
+    <p>Click on the following link to take the pre survey and the skill assessment: <b><a id="pre_survey"> <font size="+1">Pre-survey</font></a></b></p>
+
+.. raw:: html
+
+    <script type="text/javascript" >
+
+      window.onload = function() {
+
+        a = document.getElementById("pre_survey")
+        a.href = "pre_survey.html"
+      };
+
+    </script>