Reading Your Textbook
It is essential in this (and all math courses)
to read your textbook. The text contains a wealth of
knowledge. It is often a work of a master teacher in
the subject, who is not only giving examples of how
certain skills are performed, but really trying to
teach the subject to the reader: the vocabulary and
concepts, why these concepts are important, how certain
procedures/skills arise from those previously learned,
the thought processes when approaching different types
of problems, and what aspects of a problem make it
different (so that it requires a different approach)
from another. What better than to have two teachers,
one with whom you can interact and ask questions, and
the other who is a recognized leader in the field and
whose lectures are with you whenever you
are free to open the book?
Reading a math textbook is not, however, like casual
reading. You must be inquisitive as you read. Each
section you read will contain new concepts, new
skills, new vocabulary. You should continually ask
why?: What questions can be
answered using this new material that could not have
been answered before? Are these the types of questions
that it would be natural to ask? Had they occurred
to me? If not, why would someone want to know
their answers? You should also ask
how?: How is the new material related
to material I have already learned? How is it
different?
At the same time, you must pick up the
vocabulary. In some sense it is like learning a
foreign language. How can you expect to accurately
convey your ideas if you do not speak the language?
But it is not quite as simple as when you learn, say, french.
Since people in different cultures generally think
and converse about the same things, learning a foreign
language is usually a matter of word substitution
saying pain (french) instead of
bread (english), j'ai faim
instead of I am hungry. In math sometimes
the vocabulary includes words you already know and
use in daily speech. Nevertheless, the word will
have a very specific meaning in the mathematical setting,
often an idea or concept that you have never formulated
or thought about before. Learning math vocabulary
entails pinning down just what this concept is, and
being able to use the word in sentences where this
concept makes sense.
Some specific suggestions (along with those
mentioned in the last couple of paragraphs) as you read:
- Read at times of the day when you are very alert.
- Keep a writing utensil, paper, a calculator
anything that you would normally have when doing
homework at hand. Use it to verify all
calculated answers that the author provides.
(In some cases, answers may come from
computer output and, while you should consider
how these calculations can be verified by hand,
you should also exercise good judgement as to the
value of carrying all of them out.) You should
also make notes about vocabulary, new ideas,
etc. as you read try stating these in your
own words. Finally, prepare a list of
questions to ask in class on material you do
not understand.
- When you come to an example in the text:
- Read the question to understand the problem
being posed.
- Without looking at how the author solves
the problem, try to work it out yourself.
See if you can anticipate what ideas
and skills will be useful for getting the
answer, and carry out your own
calculations.
- If you get stuck, go back and read the author's
solution, just to the point where your
solution diverges from it. Look for reasons
why it might be better to take the author's
path instead of yours. Is your method
really infeasable? Can your approach
be refined so that it does work? (You can expect
to come upon similar forks in the road in the
future on problems such as this, and you want to
have some rationale that guides your
choice of direction.) Now that you are
on a different path, cover up the author's
solution and go back to working out the
example yourself. Repeat this process of
getting un-stuck as often as necessary.
- When you have completely worked through an example
and are ready to move on, pause a moment to ask
yourself why this example appears where
it does in the text. What idea(s) is it
meant to convey? Why is it appropriate to
present this example here and not someplace
else?
- When you have finished a reading assignment, take
a few minutes to act like a teacher. See if you
can provide (using your notes, of course) your
class with answers to the overarching
why? and how? questions
posed above.
If you are not already accustomed to reading mathematics
in the fashion described above, be aware that it will
definitely increase the amount of time you devote to
reading. Nevertheless, it is time well spent, as it
generally prepares you much better for doing homework
problems (and the kinds of problems you will find on
exams as well) than a more cursory reading of the text
would. The amount of time required to complete homework
should drop as a result of your efforts.
Working in Groups
Though from time to time I make assignments which are meant specifically
to be done in a group, you are always encouraged to work with others
on out-of-class assignments
unless otherwise indicated. In fact, I urge you to find
one or two other students and agree to meet at a regularly-scheduled
time each week to study together. Here are some reasons for doing this
(some of these may apply to you more or less than others, depending upon
your innate mathematical ability):
- If you view math as a set of skills to learn, then you are
embarking on a very difficult venture indeed when you sit down
to learn in a detached way the myriad of skills that go with
a specific course. As it happens, these skills are generally
based upon a relatively small collection of ideas/concepts that,
if mastered, make the skills much easier to apprehend. You
will find it easier to master these fundamental ideas through
discussions with classmates (always striving to use the
terminology/vocabulary appropriate to the course).
You should talk about the concepts in each new section,
identifying carefully what they are and what they
are not. No section is likely to emphasize more than two
concepts, and often these are repeats (concepts that have
appeared in some form earlier).
- If you spend time demonstrating to others in your group
your solutions to various problems,
you will find frequently that another has solved
a problem in a substantially differently fashion than you.
Real learning begins when you grapple
together over the merits of different methods, and why
they do or do not lead to the same answer.
- You may find that another group member can solve a problem you've
tried unsuccessfully to solve.
- Even if you tend to get all of the problems, there is value in
explaining things to others. Every teacher you know will tell
you that they thought they knew a subject well before teaching
it, but gained new insights/understanding as they taught it.
- Studying together provides opportunity for Christian interaction.
We can encourage one another, bear one another's
burdens/frustrations, and share our gifts with others.
- One day you will seek employment. Companies are looking for people
who, while individually competent, have good teamwork experiences
and skills.
Having said all of this, remember that you are individually accountable
for your learning (exams, after all, are not group efforts). The end
result must be that you are able to discuss (usually in writing) the
concepts of the course. College subjects like mathematics and
statistics are not spectator
sports! Work on a problem by yourself before seeking help, identifying
specifically the place you get stuck. When you get help, ask for the
least amount of information necessary to get you going again. Once
you've made it to a solution, give that problem a rest and see if you
could do it again (without peeking at any notes) the next day.
A rule of thumb: Understanding what another has done does not
mean that you can generate the same solution on your own nor
critique it.
Studying for an Exam
The first most important thing is not to let things go. If there
are things you don't understand from class today, do whatever you
must meet with the professor, seek help from a friend, pour
over the textbook to understand it right away. Don't assume
it will begin to make sense over time. Treat the day's material as
if you need the competence required for exam-readiness by tomorrow.
It's good to first go back over notes and problems you've done
before, especially problems on which you got stuck and made it
through only with help. It is also good to do problems that weren't
assigned. (In fact, do them even if no exam is looming in the near
future! It can only help, right?) You may also find it helpful to
dream up your own exam questions and solve them. You'll be
surprised how much you learn by doing so!
Keep in mind that there are important ways that homework is very
unlike an exam. When doing HW you have the luxury
of knowing which section the problem comes from, and where to look
for examples. Moreover, it's usually the section that was just
covered in class, so you're probably already in a mindset of
approaching the problem in a manner that will be somewhat productive.
All those advantages disappear on an exam. Prepare for it. One
possibility would be to write out a few problems (preferably ones
that weren't assigned) from each section on note cards. When you've
got a pile of such cards, shuffle them up and then work through them.
(Think creatively. You can probably improve on this method.)
Besides inventing your own test questions, there are other productive
ways to act like the teacher. Lecture to the blank wall in your
room, telling your imagined audience what you know about various
concepts and how they fit together. Imagine questions your students
would ask, and dig up the answers when you don't know them. (Yeah,
you'll wonder at first if this idea is a little crazy. But, just
like Christians, educated people are a little out of step with the
rest of society, and there's no call to be ashamed of steps toward
excellence.)
This page maintained by:
Thomas L. Scofield
Department of Mathematics and Statistics
Calvin College
Last Modified:
Wednesday, 11-Aug-2004 17:04:57 EDT