Science Teachers' Association of Victoria

Founded 1943

RESPONSE BY THE SCIENCE TEACHERS' ASSOCIATION OF VICTORIA TO THE DRAFT "VCE CHEMISTRY 2000" STUDY DESIGN

OCTOBER 1998


A: PREAMBLE

The Board of Studies in it's review of the VCE, Enhancing Their Futures (December 1997), made 33 recommendations regarding:

and

As a consequence of this review, the VCE Science studies have been restructured and the content of each study rewritten. Major changes to all Science Studies include:

It is disappointing that (although some members of the course review teams are STAV individual members) STAV has had no input or consultation in the review/rewriting process for the Chemistry 2000 Study design. Indeed, we have been unable to ascertain the membership of the review panel even though we made a number of representations to the BOS.

It is also of concern that we were given little time to consult our members and frame a response to a document that appeared to be close to a "final" version. The version we obtained was "discovered" on the BOS web-site on the 6th of October 98 and STAV received formal notification of the consultation documents and an invitation to participate in the response process on Monday 12th of October. STAV has been asked to complete a response by the 19th of October 98.

The consultation response from the BOS structures a response under the following areas:

The STAV Chemistry 2000 Review Reference Group has framed a response that espouses the areas requested but is reluctant to partition it into the suggested sub-headings.


B: General Comments about VCE Science Studies

STAV believes that the VCE should be:

STAV also maintains that VCE science curricula must:

The STAV Reference Group posed a number of questions

The STAV Reference group noted that, on first glance, the proposed Physics and Chemistry Study designs emphasised assessment issues over other pedagogical issues, and did not advise teachers how they could address the aims of the course.

It was noted that CAT 2 had been removed from the proposed course and had been replaced with "Learning Outcomes" that were assessed by teachers. It appears that the implication is that authentication of student work would not be an issue as all work should occur under the direct supervision of the classroom teacher. STAV has some misgivings with this approach:

STAV has a strong belief that if pracwork is emphasised, then measures need to be taken to ensure that students do "hands-on" primary data gathering and not data manipulation exercises.

The reference group was dismayed that the chemistry and physics documents had no focus on modes of learning and the styles of learning of individual students.


CHEMISTRY 2000

C: Overview:

The STAV Chemistry reference Group had a number of significant concerns with the proposed study design.

The consensus of the STAV Chemistry reference group was that the proposed study design pays lip service to Science in a social context, and does not adequately cater for a range of student interests and abilities. Indeed it was clear that the proposed Chemistry Study Design caters for tertiary "pure science" orientated students to the exclusion of other students.

It was also the consensus of the group that the syllabus was dull and ignored the proposition that science is a creative process.

The reference group had serious concerns about the thrust of the "Learning Outcomes" listed.

There was strong concern about the bureaucratic demands and time constraints imposed by the pracwork aspects of the Learning outcomes - especially at Year 12 (with 9 significant prac activities in a semester). If teachers cover the pracs as stipulated, it will cut significantly into the time that teachers believe they have available for content coverage. This adds pressure for teachers to treat the pracwork as second-hand data exercises, or perhaps some tertiary institutions will cover all the prescribed pracs in a one day session (much like they do now for the instrumental analysis Work Requirement), both of which STAV believes to be undesirable. Concern was also raised about teacher record keeping demands, and "make-up" classes for absentee students that would significantly add to teacher workload. STAV notes that such a system was (briefly) in place for the English GSE and the American AP systems, however both systems dropped this approach (after only 2 years for the GSE) when the inherent problems became clear.

There was also strong concern about the return to the 60's model of "Student as Scientist" Mimicking Scientists does not serve the majority of scientists (eg see RISE 1989 (19) pp 300-310). STAV believes that experimental work is not the same as "research" or problem solving. It would be more acceptable if the concept of "pracwork" was broadened to become the Demonstration of Concepts that would include not only pracwork, but debate, role-play, creative writing etc.

It was noted that there were many contextual elements stated in the study design, but the assessments (as stated) emphasise the quantitative & conceptual aspects and overlook the contextual. It was noted that 7 aims of the course are listed as dot points on page 1 of the study design, but the consensus of the reference group was that most of these dot points are not addressed by the published assessment (an emphasis on dot point 2, and perhaps some of point 3 & 4). The reference group believes that it is not responsible for stated aims of the course to be not addressed, and strongly urges the BOS to give teachers the time, opportunity and incentive to do so.


D: Individual Units in the Proposed Study Design

UNIT 1:

It was felt that this unit was reasonably acceptable, it had a diversity of assessments and reasonable context.

There was some concern about the lack of linking between the 3 units presented - this appears to reduce the coherence of the unit and subsequently the inherent meaning. There seems to be no apparent reason why the 3 parts of the unit (materials, water and surface chemistry) should be put together. The reference group recommends that an up front approach should be adopted and links are made explicit in Course advice. suggests that a thematic approach or some overarching activity be used to unify the disparate bits of the unit.

The reference group makes a strong recommendation to BOS that a thematic map be included in the study design that shows the connections of, and between larger principles be included for each unit for the benefit of teachers and students. Also advice to teachers on how to implement the study design should be integrated in some way into the study design.

UNIT 2

The assessment of the unit does not match the key ideas of this unit. Much of the contextual aspects of the unit have been excluded from the assessment (eg "the importance of acids and bases in our environment" is listed as a Key Knowledge, but is not included as part of the Assessment tasks on p20).

The reference group was concerned that the dot points under the areas of study were virtually identical to the outcome statements (this was also noted for units 3 & 4). It was felt that such an approach may be reductionist and emphasised "content" knowledge - the student shows they know concept X, by demonstrating knowledge of concept X.

Unit 3

The reference group had serious concerns about possible disadvantage of country schools and poor schools inherent in the resourcing of the content of this unit. By restricting the industrial applications to sulfuric acid and the petrochemical industry, significant bias may occur. STAV believes that a diversity of interests, background and resources must be allowed. The reference group strongly urges the inclusion of industries such as wine, breadmaking, dentistry, hospitals (haematology), cosmetics, dairies or even supermarkets as "electives". Each of these examples can relate equilibrium yield to rate and unit cost. There was also concern about the selection of sulfuric acid, as the majority of this substance is imported.

There was also significant concern about the examples chosen, as they reinforce the stereotype of chemistry as being responsible for the "bad nasties" of modern life.

If there is open access to unit 3 Chemistry (ie no prerequisite chemistry 1 or 2), the reference group asks why stoichiometry is introduced in unit 2? We would be more comfortable with either no stoichiometry in unit 2 with open access to unit 3, or a separate "mass and mole - measurement in Chemistry" is added to unit 2 with no open access to unit 3.

There was some regret at the significant repetition of concepts and contexts in unit 3, and the lack of diversity of tasks.

The organic chemistry seems preoccupied with carboxyl compounds - perhaps inclusion of ethers and amino functions would assist in the food chemistry in unit 4. Systematic nomenclature of 1-10 Carbon backbones seems to once again place emphasis the tertiary track students over others.

Unit 4

This was felt to be more of the same, very disjointed with little linking and the STS nature stated but not addressed nor assessed. The reference group was concerned that if peak bodies such as the RACI believe that the periodic table ought not be covered in VCE, and as it was covered in the study design as an afterthought, perhaps it need not be covered at all.

Once again it was clear that the assessment does not address the aims of the course and the contexts (eg batteries, electrosynthesis of aluminium etc) are dry. The reference group believes that energy can be addressed in more interesting ways such as:

Some of the Learning outcomes seemed inappropriate eg on p38 "at least one experiment constructing … [a] fuel cell that models a commercial cell".


The STAV Chemistry 2000 reference group consisted of:

Additional comments by Chris Haymes (Westbourne S. C.)