an innovative approach

Instruments
Surveys, interviews and observations were designed to evaluate the impact of
the teaching intervention as follows.
1. Surveys
A survey study in terms of descriptive research is an explanation of the
relationships among variables in a current situation and of the chronological changes
happening in those relationships (Cohen, Manion, and Morrison, 2000). The survey
could be furthered with large sample scales using simple or complex data-collecting
techniques. In this study, surveys were chosen for research purposes which aimed to
interpret students’ prior/pre and post understandings about photosynthesis concepts,
relationship between photosynthesis and the environment, the nature of science, and
learning before and after implementation of the teaching intervention. The surveys
that comprised multiple choices, open ended questions and explanation, could provide
qualitative details of the understandings. Two special designed pre-and post-surveys
were developed. For this research, the pre-survey used before and the post-survey
used after the implementation were called the Introductory Photosynthesis Survey
(IPS) and the Advanced Photosynthesis Survey (APS) respectively.
1.1) Introductory Photosynthesis Survey (IPS)
The survey was specially designed to investigate the eleventh grade
students understanding of scientists’ ideas in science. Here IPS was used prior to the
implementation of the intervention. Developmental process is showed below.
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