SECTION ONE: INVESTIGATION AND PROBLEM-SOLVING - Dylan Wiliam
SECTION ONE: INVESTIGATION AND PROBLEM-SOLVING
INVESTIGATIONS
Introduction
i) A new mathematical fact or technique. This
The first thing to remember when you introduce an investigation to students is that you are not aiming to teach a particular fact.
will be something which the students need in
order to pursue the investigation. The students will seek the new information them selves. They could find it out from you or
Investigations are about processes. (See below.)
from a peer
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It is not possible to specify exactly what learning will take place during each investigation. What
ii) A way of generating results systematically, e.g. holding a variable constant
students learn will depend on:
iii) A way of organising results, e.g. into a table
iv) A way of looking for a pattern, e.g. finding
-- their current state of knowledge;
differences in a sequence
-- how they respond to the initial stimulus; -- how familiar they are with investigative
There is a great deal for you to take in when you start to use investigations with your classes, and
processes; -- the guidance you provide when they are doing
for that reason it is sensible to concentrate on one or two aspects at a time.
the investigation.
Don't try to do everything at once. Remember that
For instance, in any one investigation lesson a if your students are new to investigating they will
student might learn any or all of the following: not know what is expected of them.
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The first thing students do when they begin an investigation is to generate results. Either from the very beginning, or after they have generated some results randomly, they may generate results systematically. From the results generated students will probably make observations. They should be encouraged to look for patterns. If they are successful in notic ing patterns they should be encouraged, if you feel it is appropriate, to generalise beyond the original group of results. When looking for pat terns or generalising, students should be encouraged to justify their statements.
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