Concepts can be examined in two groups as abstract and concrete ones. While concrete concepts are improved as a result of students' experiences, it is considerably challenging for students to perceive abstract concepts. Since chemistry includes abstract concepts largely, it is considered to be hard to comprehend as a class by students. In fact,…

According to constructivist theory, learning is a construction of new knowledge based on prior knowledge. As a consequence, science teachers are encouraged to take students' prior knowledge into account. It is evident in many cases that although students' prior knowledge is often not consistent with scientific knowledge, they may have some…

Knowing what students bring to the classroom can and should influence how we teach them. This study is a review of the literature associated with secondary and postsecondary students' ideas about acids and bases. It was found that there are six types of alternate ideas about acids and bases that students hold. These are: macroscopic properties of…

This paper provides a systematic review of instruments that have the potential to measure the quality of project-based science and technology (S&T) learning environments in elementary school. To this end, a comprehensive literature search was undertaken for the large field of S&T learning environments. We conducted a horizontal bottom-up…

The move from learning science from representations to learning science with representations has many potential and undocumented complexities. This thematic analysis partially explores the trends of representational uses in science instruction, examining 80 research studies on diagram use in science. These studies, published during 2000-2014, were…

Argues that children develop knowledge in layers, increasing those layers each time the topic is covered. Reviews three sets of materials that provide a background of experience, vocabulary, and text structure for use in science instruction. (FL)

This paper discusses various aspects of conceptual change instruction and research related to conceptual change strategies. The role played by teachers in the conceptual change process has been neglected in the research and understanding that role requires that: (1) the Conceptual Change Model of Posner provide a reasonable framework for thinking…

A review of the role of prior knowledge, metacognition, and intentionality in learning culminates in an example of how knowledge building--the community construction of new knowledge through theory construction and revision--works in a Canadian elementary science class. Comparing theories on the "public forum" of networked software…

Describes a schema-theoretic view of how analogies enhance students' prior knowledge; reviews some of the recent studies using analogies to assist students' comprehension of science text; and illustrates the use of an analogical study guide in biology. (HOD)