Creating & Defining Problems
The two problems (Qktour problems #2.3 and 3.31) are created in the (password
protected) "Define Problem" window. 
Start off by selecting, or creating a name for the problem set, and then
indicate a problem type. (For the first problem we would select a Density
Calculation.)
A. Defining a Density Calculation Problem
- Creating a Density Calculation problem:
Enter the text of the problem. (You could paste in the text of the problem
placed in the Clipboard.) 
We are now ready to define the data elements involved in setting up a density
calculation problem to solve for one of the three data elements, D, V, M.
- Entering and testing the data elements
:
Preface the unit abbreviation of the unknown term (we want to calculate the
mass in grams) with a "?" or "0". 
The solution to the problem is found by clicking on the Test button.
- Test for Anticipated Incorrect Answers
:
By changing one of the data elements, you can calculate the values of
anticipated incorrect answers. 
(Here we have checked the answer expected if the student had used 3.5 cc of
aluminum to calculate the mass of aluminum.)
- Link Anticipated Incorrect Answers to AIA messages
:
We are now ready to link anticipated incorrect answers to the AIA messages (offered when the answer is checked by the Personal Tutor). (You may want to look at how we define a mole conversion problem first.)
B. Defining a Mole Conversion Problem
- Creating a Mole Conversion problem:
Enter the text of the problem after selecting the mole conversion
problem-type. (You could paste in the text of the problem placed in the Clipboard.) 
(Note: We have also checked off the Labels box in setting up this problem,
since we expect the student to include the non-unit label as part of the correct
answer.)
- Entering and testing the data elements
:
In defining this problem, we do not need to calculate, and insert the molar
mass of calcium hydroxide since this will be done automatically from its chemical
formula. Preface the unit abbreviation of the unknown (the moles of calcium
hydroxide) with a "?" or "0". 
Click on the Test button to check out the solution to this problem. 
- Test for Anticipated Incorrect Answers
:
Here are two answers expected if the student calculated the molar mass derived
from two incorrect chemical formulas. The first left out the subscript. 
The second anticipated incorrect answer would occur if the student did not
count all of the elements inside of the parentheses. 
- Link Anticipated Incorrect Answers to AIA messages
:
We can now see how some of these anticipated incorrect answers are linked to
the AIA messages.