An important educational goal is enabling students to learn scientific concepts. The scientific concepts learned in class are developed within students' cognitive structures. Despite the successful application of Semantic Network Analysis (SNA) to study these cognitive structures, there has been limited examination of students' concept networks…

Dealing with students' conceptions is one of the central elements of student-oriented teaching. To be able to organize learning processes efficiently, it is necessary to look at the learners in a differentiated way and to approach their conceptions individually. The first necessary step is the individual diagnosis of each student's conceptions.…

This study examines the drawings that 178 young children carried out on two different occasions separated by a period of one year to explain their understanding of the plant world. The pictorial content of the drawings was analysed in accordance to the categories that previous research has proved to be useful when it comes to gaining an insight…

The study aimed to develop culture-based lessons in Biology 9, integrating indigenous medicinal plants and practices in Cagraray Island. These developed lessons were designed incorporating features of research results, problem-based approach, active learning, and culture- or context-based teaching. The accounts from eight folk healers revealed the…

In organismic biology, the formation of ecological and evolutionary hypotheses on the basis of observable morphologies is a central element of research, and by extension of teaching and learning. Often it is necessary to take account of complex combinations of factors, some of which may be far from obvious. In the work described here, hypothesis…

Science and technology development in the 21st-Century has been demanding educators to provide learning activities which stimulate students' critical thinking skills. This study aimed to find out the correlated factors of the students' critical thinking skills as well as of which was the strongest determinant in leveling the skills. The subject of…

This study is an attempt to examine the use of linguistic resources by primary science students so as to understand the conceptual and language demands encountered by them when constructing written explanations. The students' written explanations and the instructional language (whole-class discussion and textbook) employed over the topic, the life…

In secondary science education, the learning and teaching of coherent conceptual understanding are often problematic. Context-based education has been proposed as a partial solution to this problem. This study aims to gain insight into the development of conceptual coherence and how context-embedded learning-teaching activities (LT) can promote…

Processes that transform carbon (e.g., photosynthesis) play a prominent role in college biology courses. Our goals were to learn about student reasoning related to these processes and provide faculty with tools for instruction and assessment. We created a framework illustrating how carbon-transforming processes can be related to one another during…

We describe part of an action-research programme in Spain which was based on metacognitive reflection. The participants were four science teachers in a secondary school during the 2004-05 and 2005-06 academic years. During the study, they each analysed their own pupils' alternative ideas on photosynthesis and their teaching methods as recorded in…

The consideration of threshold concepts is offered in the context of biological education as a theoretical framework that may have utility in the teaching and learning of biology at all levels. Threshold concepts may provide a mechanism to explain the observed punctuated nature of conceptual change. This perspective raises the profile of periods…

This study aims at highlighting young children's reasoning about human interventions within a forest ecosystem. Our focus is particularly set on whether preschoolers are able to come up with any basic ecological interpretations of human actions upon forest plants or animals and how. Conducting individual, semi-structured interviews with 70…

The purpose of the study was to explore students' alternative conceptions and their associative thinking regarding internal transport in plants through administration of a refined diagnostic test. Questions of associative thinking and explanation were added to form a third tier of the previous two-tier test. The study found three terms related to…

Provides information on a 5-year study that tracks children's ideas and attitudes toward science. Follows children's ideas using the topic of photosynthesis. (YDS)

The assertion that there is a social component to children's construction of knowledge about natural phenomena is supported by evidence from an examination of children's classification schemes for plants. An ethnographic study was conducted with nine sixth grade children in central Texas. The children classified plants in the outdoors, in a…