The main purpose of the current study is modifying students' daily drinking water and managing waste water through modelling activities as context and modelling cycle as tool. In this study, 12 students (13-14 years old) from the lower secondary school were participated. These students were participated in two sessions (60 minutes) each week for…

Science actions represent specific initiatives and demarches that involve investigation, experimentation, and even research, for raising the interest of the young generation in science, through particular approaches of STEM education. Important topics are promoted to students in various approaches, addressing nowadays problems, answering…

Micronesian children residing on Truk and Kosrae were examined for performance on eight conservation tasks and on one task each of centration and reversibility (generally precursors of conservation in Piaget's theory of cognitive development). A total of 75 children were tested--33 in the village of Moen, Truk, and 42 in all the villages of…

This paper describes a set of studies carried out as part of a larger project on the development of children's concepts of matter and its changes. In this paper, the impact of visibility and familiarity of the process of dissolving on children's concepts is analyzed. Two different studies with kindergarten and third grade students were carried…

In a longitudinal study conducted in Reykjavik, Iceland, 60 male and 61 female subjects were tested at 7, 8, and 9 years of age in order to investigate their comprehension of three concrete-operational concepts (conservation, class inclusion, and logical multiplication). This report focuses on a logical reconstruction of the developmental sequence…

This study tests the hypothesis that components of play such as immagination contribute to cognitive development. Twenty-four middle-class children attending a university-affiliated preschool were observed for 20 one-minute play observations during the Spring Semesters of 1978 and 1979. Play was coded using categories for both social (solitary,…

This paper discusses research on how concepts differ in their internal organization and how these differences interact with and affect cognitive processing in children. Two types of natural concepts are focused on: classes (nouns with class-inclusion organization, such as "trees,""students,""soldiers" and collections…

A central component in the young child's construction of a number system is an understanding of correspondence. Although current research demonstrates that preschool children use correspondence in a variety of tasks, the nature of the relationship between the use of correspondence action patterns and the use of correspondence as a quantifier is…

An investigation was made of the extent to which mental operations involved in quantitative conservation and pretense play affect the development of gender constancy. The research design included three phases: a pretest establishing subjects' levels of conservation and gender understanding, a training phase, and conservation and gender constancy…

To discover what aspects of number conservation tasks prevent young children from conserving, two components of number conservation tasks were investigated. A test was made of the following two hypotheses: (1) the frequency of conservation responses varies significantly with the materials used, (2) the frequency of conservation responses varies…

The effects of different conditions of peer interaction on the conservation judgments of first and second grade children were investigated. Children were subjected to either a control group situation or one of four types of peer interaction (cognitive conflict, social interaction, modeling, or cognitive dissonance) in which they were presented…

This study investigated children's conceptions of death from a developmental perspective. Subjects were 170 children from grades K-4. Children were tested for conservation and interviewed, following story presentations about an elderly woman's death, to assess their understanding of three concepts concerning death: irrevocability, cessation of…

Fifty-eight kindergarten children were assessed on traditional presentations involving the conservation of number and liquid. Each conservation test contained two different items and began with the stimuli quantitatively and perceptually equal. Two other conservation tasks for number and liquid with initial nonequivalence followed. Performance on…

Repeated but unadvised attempts have been made by music educators to relate the Piagetian concept of concrete operational thought to children's understanding of music. The attempts have been focused on the apparent link between the child's detection of invariance in musical patterns and the concept of conservation. These attempts are unadvised…

The formal operations skills and problem solving performance of 60 gifted girls (grades 4 through 6) were investigated. Ss were given Piagetian tasks which involved conservation of mass and weight, use of proportion, oscillation of the pendulum, and projection of shadows. Among findings were the following: (1) no relationship between IQ and either…