摘要：According to constructivist theory, students learn by actively constructing their own
knowledge, comparing new knowledge with their prior one. Thus, identifying pre-knowledge of the students
helps meaningful learning and this should be a starting point in teaching. This paper tries to explain the Dual-
Situated Learning Model by giving some examples (pressure and buoyant force) form science concepts in the
7th grade Science and Technology Course. This model is based on constructivist theory and aims at helping
students actively participate in the learning activities. Besides, in this model, it is very important to determine
students’ prior knowledge about subject which will be taught before starting instruction. It is hoped that this
paper will help science educators and teachers prepare learning-teaching activities based on constructivist
theory with the help of this model.
关键词：Constructivist theory, dual situated learning model, science teaching, pressure and buoyant force
