An Inquiry/Technology Based Approach
to Introductory Chemistry
Problem Solving Resources: This is an interactive feature that can
be used to help students develop problem-solving skills.
A Problem Tutorial consists of three prototype questions that are randomly
sequenced. In the tutorial the student views the first question and is given
three choices of how to interact with the problem.
The 'Show Me' function presents the student with a detailed presentation
that parses the information in a step-by-step approach similar to a teacher
doing a sample problem at the board. The Show Me feature will include an audio
overlay during the step-by-step presentation.
The 'Help Me' function presents the student with an interactive parsed approach
to solving the same problem. Input from the student is evaluated by the computer
as the student progresses through the problem.
The 'Watch Me' function presents the student with an input box where the
student is expected to enter the answer to the problem. The computer evaluates
the answer. Incorrect answers are compared to a set of answers that exist
as a result of predictable errors. If a match occurs the student receives
some feedback and asked to try again. If the answer does not match a correct
answer or a known incorrect answer the student is given the choice to return
to the 'Help Me' or 'Show Me' functions. If the answer is correct the student
can exit the Tutorial and proceed to the Computerized Problem Sets (see following).
If the student uses the 'Show Me' functions, the program moves them to a second
question that only has the 'Watch Me' and the 'Help Me' functions available.
If the student uses the 'Help Me' function, the program moves them to a second
question that only has the 'Watch Me' and the 'Show Me' functions available.
If the student successfully answers the second problem correctly they can
exit the Tutorial.
If the student can not correctly answer the question they are automatically
moved to the 'HELP Me' presentation after which they will be moved to the third
and final problem in the Tutorial. In the third problem they only have the option
of the entering an answer to the question.
If the student is still unsuccessful they are directed to find assistance
from an instructor. At anytime the student may return to the 'Show Me' or 'Help
Me' function of previous questions to review their work.
Students who successfully complete the Problem Tutorial will be able to access
collections of additional problems associated with the particular concept. These
problems would reside on a WedCT or WebCT like server and have a number of features.
Questions would be individualized to each student by using randomly generated
numbers. Different chemical species could be used in a fixed problem stem. The
questions could be computer graded with facility for feedback. The instructor
would be able to control the number of submissions and specify deadlines for
submission. Finally, grades could be added to computer grade book. This resource
could also be used to generate problem sets, quizzes, and exam questions.