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2005-10-27-Using a conflict map as an instructional tool to change students' cognitive structure

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Using a conflict map as an

instructional tool to change

student alternative conceptions in

simple series electric-circuits

指導教授:張菽萱

報告人:沈永祺

Theoretical frameworks

 Conceptual change: students need to modify their existing

conceptions (e.g. miscoceptions, alternative conceptions) into

scientifically accepted conceptions during the course of

receiving science instruction.

 Conceptual change is a difficult process to be achieved as it

may require radical restructuring of one’s existing schema or

cognitive structures.

 The assertion of the use of conflict map: students should

resolve 2 conflicts during the process of conceptual change

1. Between the new perception and students’ alternative

conception

2. Between students’ alternative conceptions and scientific

concept

Method



 Subjects: 4 8th grade (14-year-old)

“fundamental physical science” classes

 2 classes were assigned to a traditional

teaching group, the other 2 classes were

assigned to a conflict map instruction group.

 These 4 classes were taught by the same

teacher.

4 periods of the conflict map

group

 review→draw a series circuit→students predict the current

value in any point of the circuit→students report their

experimental outcomes with possible explanations

 The teacher recall students’ ideas derived from the

discrepant event and introduced of the target scientific

concept. The students again worked in small groups to

conduct the experiment presented in the critical event.

 The teacher related the target scientific concept to other

scientific concepts such as resistance, voltage, energy,

Ohm’s law, electrons and electric potential differences.

 The teacher used the water circuit analogy and other

examples to explain the target scientific concept.

Periods of the traditional group



 Review the concepts of current, voltage and

resistance→use the water analogy

 Students worked in small groups to measure

the current in series circuits. The teacher

explained the experimental results and

introduced Ohm’s law.

 Students practiced 4 tutorial problems by

applying Ohm’s law.

Findings



 Students’ responses on two-tier tests:

1. Students in the traditional group may have

memorized the correct factual scientific

knowledge but they didn’t have further

understanding about it.

2. The discrepant event and the critical event

in the conflict map instruction may have

been important in contributing to students’

conceptual change.

Findings



 Students’ ideational networks:

1. The post Ideational Networks Assessment

(INA) revealed that conflict map group

students showed the better richness and

integratedness of ideational networks.

2. The delay INA revealed that students in the

conflict map group displayed a greater

extent and richer texture of ideational

networks.

Findings



 Content analysis of ideational networks:

1. The traditional instruction didn’t

successfully challenge students’ alternative

conception.

2. The conflict map instruction properly

challenged students’ alternative conception

and students didn’t return to their original

understanding.

Conclusions

 Suggestions to future research:

1. More studies on using conflict maps about

student other alternative conceptions are

necessary to further examine the

effectiveness of using conflict maps in a

wider scope.

2. Science teachers need to explore the

origins of student alternative conceptions

and then to design responding events to

challenge students’ alternative conception.



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