Review
Hugh B. Haskell
The North Carolina School of Science and Mathematics
FAST (Foundational Approach to Science Teaching - University of
Hawaii) Materials
This is an older review, but of materials still being used as indicated
through requests of teachers.
The FAST program is a complete set of curricular materials designed
for middle or junior high schools. It includes a textbook (not intended
to be permanently issued to the students, but used only in class),
a workbook, and laboratory and teacher supplementary materials. In
order to be able to purchase a classroom set of the materials and
use them in the classroom, teachers must complete a 2-3 week summer
program taught by an instructor certified by the FAST program. Presumably,
this guarantees that only qualified teachers will be able to use the
materials with students.
The program is comprehensive, covering all the principal disciplines
over the 3-4 year course of the program. While each of the three levels
has material drawn from physics, chemistry, biology and earth and
space sciences, each level also has an emphasis - FAST I, physical
science; FAST II, life science; and FAST III, environmental science.
An effort has been made to provide an "integrated" approach, in that
the segments each contain material drawn from several related disciplines
and, within limits, each unit attempts to build on the previous unit.
The program emphasizes "hands on" activities heavily and makes extensive
use of graphing skills.
I had the opportunity not just to read the text materials but to
attend part of a FAST training workshop and then spend three years
working with teachers who were using the program, at least for part
of their science teaching (Since state and local curricular guidelines
were in conflict, it was impossible for the teachers to use FAST exclusively
and still meet the criteria of both curricula). Thus, I was able to
see, in at least one case, how well the expressed philosophy of the
program as envisioned by its authors worked out in practice. While
I will have specific criticisms of the program below, I must say here
that some of the problems with the program were due to deficiencies
in the classroom and not inherently with the program-primarily the
fact that class sizes were far too large for a single teacher to effectively
supervise the efforts of all the students, especially during the laboratory
activities. This fact inevitably meant that one or more (usually several)
groups would get into serious trouble in carrying out their experiment
but the teacher was unable to get to them to provide the necessary
help during the time available.
The philosophical goals of the program are admirable - to expose
the students to science in a way that at least approximates the way
"real" science is carried out. That the execution falls considerably
short of that goal could perhaps be predicted by a glance at the impressive
list of authors, including professors of physics, chemistry, biology
and several other learned disciplines - but no 6th-, 7th- or 8th-grade
teachers. As a result, the program seriously overestimates the intellectual
or neurological capabilities of their target group in some cases and
underestimates them in others.
Since I had the privilege of working with the teachers both during
their FAST training and for an extended period of time in their classrooms,
my comments will include a discussion of the text but will be interspersed
with excerpts from the notes I took at the training sessions and during
my classroom observations. While the teachers were somewhat nervous
at my presence initially, I believe that I was able to gain their
trust before too long by refraining from criticizing their methods
and always deferring to their techniques of classroom management.
This wasn't difficult since I am not trained in intermediate grade
education, and made it clear from the outset that I was in their class
with their permission only and that my mission was solely to help
them improve their content knowledge, which, for the most part, they
were quite willing to acknowledge was lacking - of 17 teachers involved
in the program, only 3 had a science degree (biology) and 4 a science
education degree.
An example of where I think the program goes seriously
wrong is the early section on density and buoyancy in FAST I. About
16 lessons are devoted to the subject of density and its relation
to buoyancy, each a small one-step experiment designed to gently carry
the students to the concept, starting with volume measurement, then
proceeding to an empirical investigation of buoyancy which led to
the idea of density and ending with measuring the density of gases.
Along the way the density section is introduced by a quantitative
measurement of the volume of air in a Cartesian diver when it is floating,
neutrally buoyant and sunk. The skill and level of understanding required
for this experiment was well beyond that of the teachers being trained,
so it isn't surprising that most of the teachers thought that they
would just skip this part of the FAST program in their own classes.
Late in the workshop, the density of gases was investigated. As the
last item in this sequence, it is a useful pursuit, and it is needed
for them to understand some of the ideas of meteorology and atmospheric
physics later, as well as understanding balloons, which become important
later in the meteorology unit. One of the things I did not see mentioned
was the necessity of comparing volumes of gases at both constant
temperature and constant pressure. While the experiments did
control pressure, the point of its necessity was not made, nor was
temperature control mentioned at all. Some of the experiments involved
rather sudden volume changes, quick enough that the changes in the
gas occurred nearly adiabatically, and thus there were almost certainly
temperature changes that would have introduced errors into the data.
The overall goal of the density/buoyancy unit seems too abstract
to keep students' interest. It is difficult for them to see the relevance
of any given element. Can they relate to long term goals like this,
especially when they are poorly spelled out in the beginning? Short-term
goals need to be more concrete and should involve them in developing
the lab skills (careful observation, accurate measuring, correctly
recording results, etc.) that they will need later. The idea
of having them work in groups is good, but groups do not happen automatically,
and everybody does not have the same function in each group. Care
must be taken to ensure that all functions of the group are valued
equally. Not everybody has lots of ideas or is good at inventing hypotheses,
apparatus, or experimental methods. These skills can be learned if
group actions do not discourage their participation. It is also important
that groups be arranged so that the girls and minority children do
not get pushed aside by the more aggressive white boys. Sensitivity
training is important for teachers and the white boys on this
subject.
There is a lot of hyperbole in the introductory pages
about how the FAST program creates little scientists. In some of the
experiments, the results are very sensitive to the quality of the
measurements to be made so that it is possible to draw wrong conclusions
from them. This is would be OK if this was "real" science, in the
sense that future experiments will correct the errors. But in the
educational setting the emphasis is on a growth of sophistication
with further experiments: If erroneous conclusions repeatedly lead
to incorrect predictions, the students will have a hard time concluding
that science has any predictive value at all and lose interest.
The descriptive literature emphasizes the open-ended nature of science,
which is quite correct, but I wonder if students at this level are
really ready to deal with lots of open-ended questions? My guess is
that most adults are not. It is certain that no politicians
are. Scientists tend to be people with a high tolerance of ambiguity
and uncertainty. These are not common personality traits. I
sense here some of the same kind of hubris that people who are in
the theater display when they assume that because they enjoy role-playing,
everybody must (how else do you explain all the plays and TV shows
and movies about ordinary people who get involved in some kind of
role-playing). The FAST originators are scientists who have this tolerance
of ambiguity and assume that everybody has it and all we need to do
is tap it. Maybe it is true that young children have it, and all we
need to do in science classes is exploit it, but I suspect the contrary
is true - young people have little tolerance of ambiguity and it must
be carefully nurtured if they are to maintain an interest in science
long enough to decide to become one or to appreciate how science works
if they don't actually become one. Perhaps this aspect of science
should be more carefully controlled in the early grades to give more
students the opportunity to develop tolerance of ambiguity as they
mature, or at least to learn to tolerate this personality quirk among
scientists. This dichotomy in the population may play a role in the
historical tension between science and the rest of society.
In spite of the stated emphasis on reporting observation, the students
are often encouraged to present their observations in terms of some
abstract concept, such as explaining increased pressure in terms of
the atoms going faster, or being closer together, or something along
those lines. Some extensive sections, especially in the earth and
space sciences sections simply give the current thinking on several
topics without ever getting into how those things are known or that
some of them are sources of controversy among scientists. These quickly
degenerate into traditional fact presentations that do not further
the stated aims of the program.
The teacher materials do not include any information about subject
content. Either it is assumed that they already know it, or that they
do not need to know anything more than they are going to have the
students learn. While this may be an acceptable situation for the
professional teachers of education, I know of no teacher who is comfortable
teaching a class in which they know no more than what they
are trying to teach. This would be bad enough, but most of the teacher
reference material relating to class conduct is not terribly informative,
although it uses all the current jargon regarding the topics presented
- group dynamics, facilitating discussion, etc.
One of the silliest things I observed with the FAST program was its
repeated asking of the students to create a hypothesis to examine
in their experiment and to predict a result when the students had
absolutely no prior knowledge of the phenomenon under investigation,
rather than giving them a few preliminary activities involving just
observation to give them a feel for what was happening so that they
could hope to ask an intelligent question or make a reasonable prediction.
Their "predictions" were frequently wild guesses and the
smartest students quickly learned not to make a prediction until after
they had made their measurements.
The authors frequently use language in a strange way. Two examples:
Attenuate is used to mean reduce or decrease.
My understanding of this word is more restricted, in the sense of
reduction by some loss mechanism, as in "a wave is attenuated as
it passes through an absorbing medium." This seems to be an example
of using a fancy word when there is a better and simpler word available.
*Density point" is used to pick the
point off a linear graph where the value of the vertical coordinate
is numerically equal to the slope of the line. I question the avoidance
of the word slope at this point. This is one of those times
when the word (slope) as it is used in science means almost
the same thing as it does in everyday language, so it seems advantageous
to use it. It also gets started on the more abstract concept of "X
per unit Y" that Arons has spent so many years writing about.
It seems to me that once a straight line is drawn, it won't be too
hard to take several intervals on the horizontal axis and divide them
into the corresponding intervals on the vertical axis and define that
quotient as the slope - rise over run.
There is a strong emphasis on graphing in the program. As with other
aspects of the program this is admirable in intent but somewhat less
in execution. During the training sessions 1 observed several egregious
examples of graphing techniques that make it clear to me why students
arrive in my 11th and 12th grade classes with some very strange ideas
about what constitutes a graph. On several occasions, data from several
groups was pulled together to create a "class graph." Unfortunately,
insufficient attention had been paid to what the groups were actually
doing and it turned out that not all of them had done the same thing,
and so the class graph ended up mixing incompatible elements into
a thoroughly confusing mélange. In another case, the data collected
was related hyperbolically and yet a straight line fit was forced
on the data and the results then made no sense to the class. These
are clear examples of the trouble one gets into when one's knowledge
is only just what needs to be taught.
It would appear that the learned professors who lent
their names to this project did not spend much time reviewing the
product that they evidently delegated to some one else to prepare
- who I will not speculate.