You can create mathPad questions that use Algebraic mode and a Mathematica^{®}
grading statement to compare the answer key and your students' responses for mathematical
equivalence. Using Algebraic mode and Mathematica lets
you accurately evaluate your students' responses in situations where Symbolic evaluation
cannot be used — for example, to distinguish between factored and unfactored expressions, or
for questions with multiple correct answers.
Note: Do not require your students to use function notation in
an answer. WebAssign cannot grade answers that use function notation.
To create a mathPad question using Algebraic mode with Mathematica:

Click
.
The Question Editor opens.

In Name, type a name for the question.

In Mode, select Algebraic.

In Question, type your question.
 Use the answer placeholder string
<_> to specify where the answer box should be
displayed.
 Be sure that your question identifies any variables that the student
should use in their answer.

In the Question Editor, click Mathematica under Page
Tools to create and test your Mathematica grading statement and answer key.

In the Mathematica window, type your grading statement, using Mathematica expressions for the answer key and student response that you want to
test.
 Your grading statement is a Mathematica statement providing information about how to compare your
answer key and your students' responses.
 Your answer key is a Mathematica expression specifying the correct answer to the question;
sometimes the answer key is one of multiple possible correct
answers.

Click Execute.
Your grading statement is evaluated using the expressions you
specified for the answer key and student response, and the result is
displayed. If your grading statement evaluates to True, then the
response will be marked correct. Otherwise, the response will be marked
incorrect.
For example, if your question asks students to calculate an indefinite
integral, your grading statement might compare the derivatives of your answer
key and of your student's response:
The answer key specifies one of the correct responses:
3 · sin(x^{2}) + 2x + C.
The specified response is also a valid answer and the grading statement
evaluates as True.
Note: Most, but not all, Mathematica expressions are valid in WebAssign. Any expression that works in the WebAssign
Mathematica tool will work in your question.

In Answer, type the following items on a single
line:
<eqn $CASGRADER='mathematica'; $PAD='devmath'; ''>
variable_list:answer_key {tab} grading_statement
where:
 variable_list is a commadelimited list of the
variables used in the answer key.
 answer_key is the Mathematica answer key you created in the previous step.
 grading_statement is the Mathematica grading statement you created, with your answer key and student
response expressions replaced by the keywords key and
response. When the question is scored, the actual
answer key and student response values will be used in place of these
keywords.
Note:
 To add the
{tab} operator, either type the characters
{tab} or click
Add tab.You cannot
enter {tab} by pressing the
Tab
key.
 If an answer extends beyond the right side of the
Answer box, it is wrapped to the next line, but it is
still considered a single line so long as you do not press
ENTER.
For example, the following answer key and grading statement allows students
to submit the equation of an ellipse in standard form with the 1 on either side
of the equation:
<EQN $CASGRADER='mathematica'; $PAD='devmath';'' >
x,y:(x+4)^2/9+(y5)^2/5 == 1 {tab} Apply[List,key] ==
{(response)[[1]],(response)[[2]]}Apply[List,key] ==
{(response)[[2]],(response)[[1]]}
The
following responses would be accepted as correct:
$$1=\frac{{\left(x+4\right)}^{2}}{9}+\frac{{\left(y5\right)}^{2}}{5}$$
or
$$\frac{{\left(x+4\right)}^{2}}{9}+\frac{{\left(y5\right)}^{2}}{5}=1$$
Responses not in the standard form, such as the following, would be
marked incorrect:
$$1\frac{{\left(y5\right)}^{2}}{5}=\frac{{\left(x+4\right)}^{2}}{9}$$
 Optional:
Type a Solution.
The solution helps your students understand the steps they need to take to
determine the correct answer to the question. Your assignment settings
specify when to show the solution.

Click Test/Preview to test the appearance and behavior
of the question. See Test Questions.

Click Redisplay to show certain kinds of errors in the
Display section of the Question Editor. Make any needed changes to your
question.
 Optional:
Click Show Additional Information and change the
question's sharing permission or add descriptive information.
 By default, other instructors can use your question only if you provide
them with the question ID, and only you can edit the question or find it
in search results. To change the permission, see Share Questions With Other Instructors.
 If you make your question publicly available, you might want to provide
descriptive information to help others search for it. See Add Search Metadata to Questions.

When your question displays and functions correctly, click
Save.
WebAssign assigns it a unique question ID (QID), which is displayed in
parentheses after the question name.
You can use your question in an assignment and see it in your
My Questions list only after it is saved.
Example mathPad Question Using Algebraic Mode with Mathematica
The following table summarizes an actual
question.
QID

1344935

Name

Template2 4.MATHP.02.

Mode

Algebraic

Question

Find the equation in standard form of the following ellipse:
<div class="indent">
Center: (4, 5)<br>
Vertices: (7, 5) and (1, 5)<br>
Foci: (6, 5) and (2, 5)
</div>
<_>

Answer

<EQN $CASGRADER='mathematica'; $PAD='devmath';'' >
x,y:(x+4)^2/9+(y5)^2/5 == 1 {tab} Apply[List,key] ==
{(response)[[1]],(response)[[2]]}Apply[List,key] ==
{(response)[[2]],(response)[[1]]}

Display to Students


© 2015 Advanced Instructional Systems, Inc. (revised May 2015)