Memorize Multiplication Facts?
Cheney, Yes. Romberg, Abstain.
This Essay Deals with a Major Fallacy of NCTM Math:
Memorization and Practice
are Ruled Out. So Kids Don't Remember Specific Math
Facts and Skills. But "Doing Math" Requires the Application of
Remembered Math Facts and Skills That Must First be Stored in the
Brain.
The First Fallacy of NCTM Math is the Lack of Genuine Math
Content.
2005 Update Notes:
- Originally written in 1997, this essay refers to the 1989
version of the NCTM Standards. But it's still relevant, because
the
2000 version of the NCTM Standards is based on the same constructivist
philosophy.
- NCTM math is synonymous with "new-new math," "fuzzy math," and
"constructivist math."
On August 11, 1997 the New York Times published two Op-Ed pieces,
one
by Lynne Cheney, former chair of the National Endowment for the
Humanities,
and the other by Thomas Romberg, former chair of the Commission on
Standards
of The National Council of Teachers of Mathematics (NCTM).
To view the Cheney and Romberg essays, click on the author's name
below.
Lynne
Cheney Described the "Constructivist" Philosophy of the NCTM
- "Students don't need to know multiplication tables in order to
divide,
they say. Using objects and calculators they can figure it out - and
thus
begin to create their own mathematical knowledge."
- "According to the council, stressing addition, subtraction, and
worst
of
all, memorization made students into passive receivers of rules and
procedures
rather than active participants in creating knowledge."
- "The standards recommended that students get together with peers
in
cooperative
learning groups to "construct" strategies for solving math problems,
rather
than sit in class with teachers instructing them."
- "Calculators were a necessity from kindergarten on, the council
said,
because
students liberated from "computational algorithms" could pursue
higher-order
activities, like inventing personal methods of long division."
- "Although the council wants all students to learn to estimate and
use
mental
calculation and to be equally comfortable using paper and pencil,
calculators
and computers, nowhere does it argue that students do not need to
memorize
multiplication facts. Nor does the council say that students should use
a calculator for all computations."
- "Similarly, the examples the teachers council has produced often
portray
students working on real-world problems, providing oral or written
explanations
of how a problem was solved, or collaborating with other students. But
the council never meant to imply that such approaches are appropriate
for
every lesson."
- "Sometimes even appropriate material is ineffective because the
teacher
using it doesn't have enough math background or the right training"
- "It's unfair to attack the entire program because of initial
missteps
and
isolated examples of misapplied guidelines."
What Do the NCTM Standards Actually Say?
Thomas Romberg suggests that the NCTM Standards have been
misunderstood.
They don't explicitly rule out all memorization, they don't recommend
the
constant use of calculators, and they don't say kids must always work
in
groups, attempting to solve real-world problems. We are to be comforted
that the NCTM never intended an extreme interpretation of their
"less
of this" and "more of that" recommendations. They never said that
"none"
was the optimal form of "less", or that "always" was the optimal form
of
"more". Apparently it's all the fault of poorly prepared teachers. Of
course,
the answer is increased funding for NCTM-controlled teacher training.
Here's what the NCTM Standards actually say:
- First, and most importantly, the NCTM Standards discourage the
memorization
of multiplication facts and any other specific math content. Whenever
memorization
or memorization methods (practice) are mentioned, the tone is always
negative.
Here are a few examples:
- "The curriculum should focus on the development of
understanding, not
on
the rote memorization of formula."
- "The 9-12 standards call for a shift in emphasis from a
curriculum
dominated
by memorization of isolated facts and procedures and by proficiency
with
paper-and-pencil skills to one that emphasizes conceptual
understandings,
multiple representations and connections, mathematical modeling, and
mathematical
problem solving".
- "Classroom observations should gather information about whether
mathematics
is portrayed as an integrated body of logically related topics as
opposed
to a collection of arbitrary rules that students must memorize."
- Next, Thomas Romberg is literally correct, the NCTM Standards
don't say
that "students should use a calculator for all computations".
Here's
what they do say:
- "Contrary to the fears of many, the availability of calculators
and
computers
has expanded students' capability of performing calculations. There is
no evidence to suggest that the availability of calculators makes
students
dependent on them for simple calculations. Students should be able to
decide
when they need to calculate and whether they require an exact or
approximate
answer. They should be able to select and use the most appropriate
tool."
- The clear message is that all kids, regardless of age, should
decide
for
themselves about the appropriate use of calculators. (So far, there are
no known instances of children who have personally decided to reject
the
calculator in favor of the more difficult option of learning
traditional
arithmetic.)
- Finally, what do the NCTM Standards have to say about group
learning?
- "This approach instills in students an understanding of the
value of
independent
learning and judgment and discourages them from relying on an outside
authority
to tell them whether they are right or wrong."
- "Students should frequently work together in small groups to
solve
problems....
They should verify their own thinking rather than depend on the teacher
to tell them whether they are right or wrong."
A Major Fallacy Behind NCTM Math
The NCTM's constructivist math educators
want easy,
stress-free math, so they reject memorization and practice and thereby
severely limit the student's ability to remember specific math facts
and skills. Without
specific remembered knowledge, students must regularly revisit shallow
content and rely on general content-independent skills, such as "draw a
picture" or "make a list."
Traditionally, K-12 math is the first
man-made
knowledge domain where American children build a remembered knowledge
base
of domain-specific content, with each child gradually coming to
understand
hundreds of specific ideas that have been developed and organized by
countless
contributors over thousands of years. With teachers who know math and
sound
methods of knowledge transmission, the student is led, step-by-step, to
remember
more and more specific math facts and skills, continually moving deeper
and deeper into the
structured
knowledge domain that comprises traditional K-12 math. This first
disciplined knowledge-building experience is a key enabler, developing
the memorizing and organizing skills of the mind, and thereby helping
to
prepare the individual to eventually build remembered knowledge bases
relative
to other knowledge domains in the professions, business, or personal
life.
The ongoing strength of our
information-age
economy depends fundamentally on a ready supply of millions of
knowledge
workers who can learn to understand and extend thousands of specific
knowledge
domains, from aeronautical engineering and carpentry to piano tuning
and
zoology. Although the specific facts, skills, and organizing
principles
differ from domain to domain, genuine domain experts must necessarily
remember
a vast amount of specific information that is narrowly relevant to
their
targeted
knowledge domains, frequently without the possibility of transfer to
other
domains.
If Traditional Content is Out, What's NCTM
Math
"Content"?
The major subtopics are calculator skills, math
appreciation,
and, general, content-independent "process" skills. For example,
in his New York Times Op-Ed piece (August 11, 1997),
Thomas
Romberg placed the spotlight on general, content-independent skills
when
he wrote about the foundational role of the "four general
standards
- problem solving, communication, reasoning, and connection". Of
course,
space didn't permit him to give you the new-new definitions of these
high-sounding
terms. Fortunately, we have space here. The truth is in the details.
First, forget your old-old ideas:
- New-new "problem-solving" doesn't depend on first learning
specific
math
content.
- New-new "communicating" doesn't emphasize the correct use of the
precise
symbols and language of math.
- New-new "reasoning" doesn't refer to the step-by-step application
of
remembered
math content.
- New-new "connecting" isn't about relating new math knowledge to
previously
learned math.
Quoting from the NCTM Standards, here's the new-new way:
- The NCTM problem-solving strategies are:
- "Using manipulative materials"
- "Trial and error"
- "Making a list"
- "Drawing a diagram"
- "Looking for a pattern"
- "Acting out a problem"
- "Guess and check"
- Grade K-4 NCTM communication is about:
- "the integration of language arts as children write and discuss
their
experiences
in mathematics."
- "children might draw pictures and then tell or write stories
about the
equation "
- "Students can write a letter to tell a friend about something
they have
learned in mathematics class."
- Grade 9-12 teachers of NCTM communication are to:
- "Direct instruction away from a focus on the recall of
terminology and
routine manipulation of symbols and procedures."
- Recognize that "in mathematics, just as with a building, all
students
can
develop an understanding and appreciation of its underlying structure
independent
of a knowledge of the corresponding technical vocabulary and symbolism."
- Understand that "technical symbolism should evolve as a natural
extension
and refinement of the students' own language".
- NCTM reasoning is about:
- Helping "children learn that mathematics is not simply
memorizing rules
and procedures but that mathematics makes sense, is logical, and
enjoyable".
- "Creating and extending patterns of manipulative materials and
recognizing
relationships within patterns".
- Recognizing that "most fifth graders are still concrete
thinkers who
depend
on a physical or concrete context for perceiving regularities and
relationships".
- Understanding that "even the most advanced students at the 5-8
level
might
use concrete materials to support their reasoning".
- Encouraging students "to explain their reasoning in their own
words".
- Recognizing that, prior to grade 9, "experience both in and out
of
school
has taught them to accept informal and empirical arguments as
sufficient",
(Note: "Informal arguments" refers to the use of concrete
manipulatives,
and "empirical arguments" refers to generalizing from observations.)
- Under the heading of connections, the NCTM wants to:
- Insure that children "will not need to learn or memorize as
many
procedures;
and will have the foundation to apply, recreate, and invent new ones
when
needed".
- Help students to "view mathematics as an integrated whole
rather than
as
an isolated set of topics".
- Insure that "as in the earlier grades, teachers in grades 9-12
should
introduce
a new topic by exploring appropriate concrete representations".
Brought To You by "Math Educators", Not Mathematicians
When Thomas Romberg tells you that the NCTM Standards have
"received
wide support from mathematicians and math educators", he's hoping
you're
not too picky about the definition of "mathematician". Sure, there are
a few mathematicians who appear to go along, but these typically
haven't
read the NCTM Standards and just assume that they can't be that bad.
(Of
course, "a few" suffices as a "proof" for Thomas Romberg, using the
new-new
math definition of "empirical reasoning".)
Math Educators Do Not Speak for Mathematicians
- Mathematicians reject the idea that you can "do math" without
"knowing
math".
- Genuine mathematicians know that a necessary condition for
reasoning
mathematically
is a remembered knowledge base of specific math facts and specific math
skills
- Mathematicians reject the early use of calculators, beginning in
kindergarten,
and they question the current excessive use of calculators, during all
of the K-12 years.
- Mathematicians want parents to know that kids must be challenged,
not
babied
until grade 9 and beyond with concrete "manipulatives", and not
continually
waiting until the child feels "ready".
- Mathematicians reject the substitution of "informal and empirical
arguments"
for genuine mathematical reasoning and genuine mathematical proof.
- Mathematicians cringe at the belief that math appreciation (a
cult-like
excitement about the "power" and "beauty" of math) is more important
than
actually learning specific math content.
- Mathematicians reject the belief that general,
content-independent
skills
are in any way central to the process of learning mathematics.
Anti-Content Thinking Threatens All Americans
- If our kids never learn the importance of remembered knowledge,
and if
they are programmed to think that memorization and practice are not
necessary,
then what happens if they somehow reach medical school and need to
quickly
memorize thousands of facts from Gray's Anatomy? It's difficult
enough even with the traditional preparation of the mind.
- This is not just about kids who go to medical school. The
current
reigning
educational philosophy is dangerous for all our children. If they are
to
be successful in life, they must effectively use the amazing
knowledge-storing
power of their brains. Are we really going to continue to let today's
educationists
program our kids to believe that remembering specific knowledge is a
bad
idea, and that computer "tools" and "look-up skills" are the key to
success
in business, professional life, and personal knowledge-based interests?
- Who will build bridges in the 21st century?
- If current trends continue, the answer will be Asians and
Europeans.
They
still believe in knowledge transmission and the critical importance of
specific, remembered knowledge. They still stand in awe of the amazing
knowledge-storing power of the human brain, and they're leaving us in
the
academic dust, even though they typically educate 40+ students in their
classrooms.
- Of course you've heard about the enormous pressure placed
upon Asian
kids,
with many close to suicide. Of course it isn't true. It's just part of
the defensive strategy from the propaganda machine of the American
education
establishment - a 600 billion dollar (annual) industry.
Next?
Copyright
1997-2005
William G. Quirk, Ph.D.