The Development of Individualized Audio‐Visual Learning Units in Junior High School Biology and the Students’ Achievements

Summaries

English

The development of series of audio‐tutorial units for biological education at junior high school level is described. The effectiveness of these units was tested with students from a Kibbutz school and found to produce higher achievement than a ‘normal’ teaching approach, based on the BSCS Yellow Version (Israeli adaptation) materials. The audio‐tutorial method led to a particularly high achievement gain in the case of girls. The achievement gains resulting from the audio‐tutorial approach are explained in terms of the motivational effect of this method on students.     

Intuitive Interference in Geometry: An Eye‐Tracking Study

Interference of irrelevant salient variables may cause difficulties for students. This study focused on eye tracking during the comparison of perimeters task, in which area is the interfering irrelevant salient variable. There were three trial types: congruent (larger area—larger perimeter), incongruent inverse (larger area—smaller perimeter), and incongruent equal (larger area—equal perimeter). Behavioral findings corroborated previous studies: congruent trials yielded higher accuracy and a shorter reaction time than did incongruent trials. Surprisingly, the area saliency could not be revealed in fixation location and duration measurements in incongruent inverse trials nor in the heat maps for incongruent inverse or incongruent equal trials, suggesting that such processing does not require overt attention; measures of attention shift from one geometrical shape to another were higher for incongruent equal trials, as was pupil dilation, suggesting that greater effort is associated with solving incongruent equal trials.     

Complexity of Shapes and Quantitative Reasoning in Geometry

ABSTRACT— We explored the effects of task‐related factors on reasoning processes in geometry focusing on a comparison‐of‐perimeters task in which the irrelevant feature area interferes with the reasoning process. We studied the effects of congruity, salience, and complexity on participants’ accuracy of responses and reaction times. The study shows that incongruent trials yield lower accuracy and longer reaction times than congruent ones. In addition, increasing the salience of the irrelevant feature results in a lower rate of success. Previous research suggested that a high cognitive load leads to higher interference in the incongruent condition. The current study shows that, in this condition, increasing the level of complexity of shapes associated with a higher cognitive load decreases the accuracy of responses and increases reaction times. Our findings can aid educators to select appropriate tasks and examples in their classrooms, taking into account how the level of difficulty is affected by complexity, salience, and congruity.     

Persistence of the Intuitive Conception of Living Things in Adolescence

This study investigated whether intuitive, naive conceptions of “living things” based on objects’ mobility (movement = alive) persist into adolescence and affect 10th graders’ accuracy of responses and reaction times during object classification. Most of the 58 students classified the test objects correctly as living/nonliving, yet they demonstrated significantly longer reaction times for classifying plants compared to animals and for classifying dynamic objects compared to static inanimate objects. Findings indicated that, despite prior learning in biology, the intuitive conception of living things persists up to age 15–16 years, affecting related reasoning processes. Consideration of these findings may help educators in their decisions about the nature of examples they use in their classrooms.     

PIAGETIAN COGNITIVE LEVEL AND THE TENDENCY TO USE INTUITIVE RULES WHEN SOLVING COMPARISON TASKS

According to the intuitive rules theory, students are affected by a small number of intuitive rules when solving a wide variety of science and mathematics tasks. The current study considers the relationship between students’ Piagetian cognitive levels and their tendency to answer in line with intuitive rules when solving comparison tasks. The findings indicate that the tendency to answer according to the intuitive rules varies with cognitive level. Surprisingly, a higher rate of incorrect responses according to the rule same A–same B was found for the higher cognitive level. Further findings and implications for science and mathematics education are discussed.     

Awareness of Societal Issues Among High School Biology Teachers Teaching Genetics

The purpose of this study was to investigate how aware high school biology teachers are of societal issues (values, moral, ethic, and legal issues) while teaching genetics, genetics engineering, molecular genetics, human heredity, and evolution. The study includes a short historical review of World War II atrocities during the Holocaust when scientists from all the above-mentioned disciplines had been involved in trying to support and develop the eugenics theories. It investigates pre- and postwar theories of the eugenics movement in the United States which were implemented successfully in Germany and a literature survey of the studies of societal issues related to these subjects. The sample consisted of 30 male and female biology teachers. Enclosed are teachers' answers in favor or against including debates about societal issues in their classrooms while teaching the disciplines mentioned above. Teachers' answers were analyzed in relation to three variables: years of teaching experience, gender, and religion faith. Data were collected from questionnaires and personal interviews and analyzed according to qualitative and quantitative methods. The results show that amongst the teachers there is a medium to low level of awareness of societal issues, while mainly emphasizing scientific subjects in preparation of matriculation examinations. The majority of the teachers do not include societal issues in their teaching, but if students raise these issues, teachers claimed to address them. No differences in teachers' opinions to societal issues were found in relation to gender or religious faith. Teachers with more years of teaching experience tend to teach with a more Science, Technology, and Society (STS) approach than novice teachers. The results are discussed in relation to teachers' professional development and teaching strategies are suggested to be used in their classrooms based on a STS approach, which includes the societal issues as a main goal.     

Computer simulations in the high school: Students' cognitive stages,science process skills and academic achievement in microbiology

Computer-assisted learning, including simulated experiments, has great potential to address the problem solving process which is a complex activity. It requires a highly structured approach in order to understand the use of simulations as an instructional device. This study is based on a computer simulation program, 'The Growth Curve of Microorganisms', which required tenth grade biology students to use problem solving skills whilst simultaneously manipulating three independent variables in one simulated experiment. The aims were to investigate the computer simulation's impact on students' academic achievement and on their mastery of science process skills in relation to their cognitive stages. The results indicate that the concrete and transition operational students in the experimental group achieved significantly higher academic achievement than their counterparts in the control group. The higher the cognitive operational stage, the higher students' achievement was, except in the control group where students in the concrete and transition operational stages did not differ. Girls achieved equally with the boys in the experimental group. Students' academic achievement may indicate the potential impact a computer simulation program can have, enabling students with low reasoning abilities to cope successfully with learning concepts and principles in science which require high cognitive skills.     

A comparison of the actual and preferred classroom learning environment in biology and chemistry as perceived by high school students

The actual and preferred students perception of classroom learning environment was measured using a modified Hebrew version of the Learning Environment Inventory (L.E.I.). This version was content validated and analyzed for its reliability. This measure was administered among Chemistry (N = 1080) and Biology (N = 400) students and the perception of the actual and preferred learning environment was compared using multivariate analysis methods (Hotelling T² and discriminant analysis). On the whole, significant differences were found between the two samples. It is suggested that these differences can be attributed to the different curricula and different instructional methods used in chemistry and in biology classes. It is suggested that the findings obtained in this study could serve both future science teachers and curriculum writers in the development and implementation of learning activities in the context of science curricula.