The effectiveness of using computer simulated experiments on junior high students' understanding of the volume displacement concept

Several researchers have suggested that the computer holds much promise as a tool for science teachers for use in their classrooms (Bork, 1979, Lunetta & Hofstein, 1981). It also has been said that there needs to be more research in determining the effectiveness of computer software (Tinker, 1983). This study compared the effectiveness of microcomputer simulated experiences with that of parallel instruction involving hands-on laboratory experiences for teaching the concept of volume displacement to junior high school students. This study also assessed the differential effect on students' understanding of the volume displacement concept using sex of the students as another independent variable. In addition, it compared the degree of retention, after 45 days, of both treatment groups. It was found that computer simulated experiences were as effective as hands-on laboratory experiences, and that males, having had hands-on laboratory experiences, performed better on the posttest than females having had the hands-on laboratory experiences. There were no significant differences in performance when comparing males with females using the computer simulation in the learning of the displacement concept. This study also showed that there were no significant differences in the retention levels when the retention scores of the computer simulation groups were compared to those that had the hands-on laboratory experiences. However, an ANOVA of the retention test scores revealed that males in both treatment conditions retained knowledge of volume displacement better than females.     

Some contributions to sex differences in scholastic aptitude scores

In this study no significant direct effect of sex on performance on ASAT was found. Further, sex differences in performance were found to be the result of females having a higher verbal ability as measured by English assessments, males studying more mathematics, and males having a greater confidence in success on ASAT. For this sample it was found that the female students achieved about 0.40 score points on ASAT more than males, after regressing out father's occupation, English assessment, hours spent studying mathematics, and confidence in success. The adjustment to ASAT scores in 1983 would certainly account for the positive effect of sex; i.e. being a female increased a student's score by 0.40 score points. After allowing for this adjustment of approximately 1.0 score points, being a male increased a students ASAT score by 0.60 score points.ASAT was found to favour students who scored well in English and those students who studied more hours of mathematics. English, in part, tests verbal aptitude and consequently it might be expected that there would be a significant positive effect related to English assessment. The number of hours of mathematics studied is not itself a direct measure of aptitude and consequently it may be considered that the number of hours of mathematics studied provides an advantage for performance on ASAT. However, it is not unreasonable to expect that it is those students of greater quantitative aptitude who would study more mathematics. The significant mathematics hours effect may be a result of this, since there is no control for quantitative aptitude within the model. It was, however, the very large effect which the score on the confidence in success attitude scale had on ASAT performance that was the most suprising. For some undetermined, perhaps social, reason, females had a significantly lower confidence than males.The relationship between Confidence in Success and performance might be expected since, in part, the Confidence in Success variable measures how well students thought they did on ASAT. It is still clear however, that after confidence in success is taken into account, sex has no significant effect on ASAT score. The predictors of success are English ability, hours spent in the study of mathematics, and confidence.     

Instructional strategy change and the attitude and achievement of seventh- and eighth-grade science students

This sequential methodologic elaboration study investigated differences between the middle school and the junior high instructional strategies and the effects on adolescent attitude toward science in school and science achievement. Subjects of the quantitative phase were 570 seventh- and eighth-grade students in one school in an urban school district in the midwest United States during a transition year from junior high to middle school. Germann's Attitude toward Science in School Assessment and the school district's Benchmark Exams were employed to measure student pre- and posttest attitude and achievement. Variations within grade level, gender, race, general ability, and socioeconomic group were evaluated. Results of split plots revealed no significant differences in science attitude between the experimental middle school group and the junior high control group at this phase. However, there was significant improvement in attitude in both seventh-grade populations, but no change in attitude in either eighth-grade population. No significant differences in attitude were found between males and females, Caucasian students and students of color, or students of different ability or socioeconomic groups. Significant increases in science achievement were revealed in the seventh-grade junior high control group, the eighth-grade middle school, and the eighth-grade junior high, but not in the seventh-grade middle school. No significant differences in achievement were found between males and females. Caucasians scored significantly higher in achievement than students of color. Average and high ability students scored significantly higher pretest to posttest, but low ability students did not. High ability students scored significantly higher than both average and low ability groups. There was significant improvement in science achievement for students in the sufficient socioeconomic status group, but not in the low socioeconomic status group. These results were discussed with the five science teachers, the principal, and a university consultant in the setting, who were the informants of the qualitative elaboration phase of the study. Ethnographic methods uncovered themes explaining differences and similarities within the two instructional strategies. Teachers' feelings and stages of concern were identified. The results are discussed in terms of effectively implementing changes in instructional strategies and assessing science achievement of early adolescents.     

Videogames and spatial skills: An exploratory study

Fifty-eight undergraduate and graduate students participated in an exploratory study which examined the relationship between videogames, spatial cognitive skills, and eye-hand coordination. Scores on two videogames were compared with subjects’ scores on three standardized spatial skills tests and on one test of eye-hand coordination. The subjects were randomly assigned to either the experimental group (which was provided with five hours of videogame practice) or the control group (which was provided with no videogame practice). The scores on the two videogames were found to be correlated with different spatial test scores. Significant sex and age differences were also found on several of the measures. The males scored higher than the females on spatial orientation, visualization, and the baseline measures on one of the videogames, while the females scored higher than the males on the test of eye-hand coordination. The age of the subjects was found to be negatively correlated with scores on the videogames and spatial test scores. I would like to acknowledge the significant contributions of my advisers Ronald Slaby and Barbara Flagg of Harvard Graduate School of Education, America’s Game of Somerville, MA, for equipment donation, and John Kao of the Harvard Business School for donating the use of computer facilities.     

Differential effects on the achievement of males and females of teaching the particulate nature of chemistry

Chemistry concepts in three 2‐week modules were presented to a treatment and control group of high school students from 10 different high schools. The treatment group was taught using three representations of matter (macroscopic, particulate, and symbolic), whereas only two representations (macroscopic and symbolic) were used with the control group. The treatment group scored significantly higher across the combined score of all three modules. When the data were analyzed for gender–group interactions, females who were taught the particulate representation scored as well as males whereas those who were not taught the particulate representation scored significantly lower than males. Teaching males the particulate representation did not significantly affect males' achievement. © 2002 Wiley Periodicals, Inc. J Res Sci Teach 39: 911–927, 2002     

Chapter 3 Learning style factors and mathematics performance: Sex-related differences

This study examined the relationships among (a) sex; (b) grades in Algebra I, Geometry, and Algebra II; (c) mathematics learning styles and interests; and (d) scores on the PSAT-M, in a sample of high school students enrolled in Algebra II. The average grade in Algebra I was significantly higher for females than for males. Females reported significantly less interest in technical hobbies or careers than did males, less confidence in their ability to excel on mathematical tasks involving cognitive restructuring or applications, and a greater desire for structure when learning mathematics. In a sub-sample, males scored significantly higher than females on the PSAT-M. Scores on the PSAT-M were significantly related to grades in geometry but not algebra.     

Changes in race and sex stereotype threat among diverse STEM students: Relation to grades and retention in the majors

In laboratory studies, induced stereotype threat shows negative effects on academic performance and learning. Is the relation between stereotype threat and grades robust in naturalistic settings, specifically in introductory STEM courses? We gathered data on two new measures we term race and sex stereotype bias, which were administered four times over the course of introductory chemistry and biology courses for STEM majors (N = 1358). Patterns of growth for all stereotype bias measures showed a discontinuous pattern, with increases during each semester (fall and spring) and decreases between semesters. For all stereotype bias measures, sophomores scored significantly higher than freshmen, and juniors scored in between. For the sex stereotype bias measure, females scored significantly higher than males. There were no race or sex differences on slopes of growth; though groups began at different levels, all grew at the same rate. There was little relation between grades and stereotype bias when analyzed by race; Asian students showed the largest number of significant – albeit small – correlations (3) and Black students the fewest (none). Correlations between grades and sex stereotype bias were significant and negative – but small – only for males. Results support a point made by Steele in 1997 but neglected since then; stereotype threat may affect only a small sub-portion within stereotyped groups. We argue that variables other than stereotype threat might be better targets for research attempting to explain gaps in STEM achievement and retention.     

The role of sex differences in the referral process as measured by the Peabody Picture Vocabulary Test-Revised and the Wechsler Intelligence Scale for Children-Revised

The Peabody Picture Vocabulary Test-Revised (PPVT-R) and the Wechsler Intelligence Scale for Children-Revised (WISC-R) are two tests that are often used in the assessment process for special education referrals. Sex differences apparent in these tests were examined in a sample of Arkansas school children who were first-time referrals for a psychological evaluation. The subjects' PPVT-R standard scores, WISC-R IQ scores, and WISC-R subtest scores were divided into groups according to one-year intervals from ages 6 through 16. A separate 2 × 11 (subjects' sex x subjects' age) analysis of variance was performed for each dependent variable. Results indicated significant sex differences among WISC-R Full Scale, Verbal, and Performance IQs and PPVT-R standard scores (p < .01). Several WISC-R subtests also revealed significant sex differences. Further significant sex differences were indicated at several age groups on each dependent variable, with males consistently scoring higher than females on 87%. of the dependent measures excluding the WISC-R subtest Coding, on which females scored higher. Implications concerning the referral process are discussed.     

Personality and Student Teaching Success

The relationship between personality factors of education students and their success in student teaching was explored in relation to the student teacher’s sex and level of pupils taught. The IPAT Sixteen Personality Factor Questionnaire was administered to all education majors at Florida Atlantic University and the student teaching grade was collected for those students (N = 362) completing the education program.

A 3 × 2 × 2 Manova was employed wherein the level of pupil taught, teacher sex, and student teaching grade served as independent variables and the 16 personality scores as dependent variables. Significant effects were grade achieved in student teaching and sex. Separate discriminant functions were derived to separate both males and females with respect to student teaching grade. The percentage of hits resulting from subsequent classification of a replication sample was found too low to validate the personality discriminant model as a student teaching grade predictor.     

Comparative effects of ability and presentation mode in computer-assisted instruction and programed instruction

Summary The duration of the current experiment was admittedly quite short—30 minutes to an hour of learning time. A longer program may have produced more pronounced differences. Sixty-four students including 32 high and low ability males and females were randomly assigned to programed instruction and computer-assisted instruction programs on the topic of Significant Figures. The results indicated that the students using programed instruction performed significantly better than those using CAI. This difference was attributed primarily to the very poor performance by the low ability students in the CAI group. There was also a significant ability effect. The posttest and retention test results, as well as number of errors in the actual learning sequence, indicated there was a trait by treatment interaction which was interpreted primarily as a very poor performance by low ability students on CAI, with almost equal performance by high and low ability students utilizing programed instruction. The data would not support such explanations as the use of recognition responses or the inability to achieve any particular concepts in the program for the performance of low ability students on the CRT-oriented CAI. Further research is suggested. The work reported herein was sponsored by the Florida State University Computer-Assisted Instruction Center and the Office of Naval Research under Grant No. N00014-68-A-0494.     

Cognitive style predicts entry into physical sciences and humanities: Questionnaire and performance tests of empathy and systemizing

It is often questioned as to why fewer women enter science. This study assesses whether a cognitive style characterized by systemizing being at a higher level than empathizing (S > E) is better than sex in predicating entry into the physical sciences compared to humanities. 415 students in both types of discipline (203 males, 212 females) were given questionnaire and performance measures of systemizing and empathy. 59.1% of the science students were male and 70.1% of the humanities students were female. There were significant sex differences on the Empathy Quotient (EQ) (females on average scoring higher) and on the Systemizing Quotient (SQ) (males on average scoring higher), confirming earlier studies. Scientists also scored higher on the SQ, and scored lower on the EQ, compared to those in the humanities. Thus, independent of sex, SQ was a significant predictor of entry into the physical sciences. Results from questionnaire data and performance data indicate an S > E profile for physical science students as a group, and an E > S profile for humanities students as a group, regardless of sex. We interpret this as evidence that whilst on average males show stronger systemizing and females show stronger empathizing, individuals with a strong systemizing drive are more likely to enter the physical sciences, irrespective of their sex.     

Toy-playing behavior,sex-role orientation,spatial ability,and science achievement

The purpose of this correlational study was to examine the possible relationships among children's extracurricular toy-playing habits, sex-role orientations, spatial abilities, and science achievement. Data were gathered from 282 midwestern, suburban, fifth-grade students. It was found that boys had significantly higher spatial skills than girls. No significant differences in spatial ability were found among students with different sex-role orientations. No significant differences in science achievement were found between girls and boys, or among students with the four different sex-role orientations. Students who had high spatial ability also had significantly higher science achievement scores than students with low spatial ability. Femininely oriented boys who reported low playing in the two-dimensional, gross-body-movement, and proportional-arrangement toy categories scored significantly higher on the test of science achievement than girls with the same sex-role and toy-playing behavior.     

Bridging Realty to Virtual Reality: Investigating gender effect and student engagement on learning through video game play in an elementary school classroom

The purpose of this study was to examine students' learning of simple machines, a fifth‐grade (ages 10–11) forces and motion unit, and student engagement using a teacher‐created Multiplayer Educational Gaming Application. This mixed‐method study collected pre‐test/post‐test results to determine student knowledge about simple machines. A survey ascertained the time spent using the computer for general purposes, and the time spent playing computer games as a function of gender. The pre‐test and post‐test design involved 74 students, 31 males and 43 females, who played the Dr. Friction Multiplayer Educational Gaming Application for several days in the middle of the unit. Results showed the females averaged using the computer more than their male counterparts and males played video games more than females. Analysis of covariance suggested no significant difference between the factor gender (p > .05) but statistically significant differences in gain scores (p = .001). Observations and qualitative focus groups suggested high student engagement and how video game technology can scaffold learning of simple machines.     

Student attitudes toward science and sciencerelated careers: A program designed to promote a stimulating gender-free learning environment

A project designed to foster the full and fair participation of girls in high-school science classes addressed obstacles, both perceived and actual, to equal participation. In order to modify existing classroom techniques and environments, a Teacher Intervention Program was designed. By means of a workshop and periodic personal communications, teachers were sensitized to the importance of a stimulating, gender-free learning environment. In addition, they were presented with a variety of methods and materials which had been shown to encourage girls in science. Twelve teachers, who were selected randomly, taught in diverse communities throughout one Midwestern state. The subjects tested were students in 24 general biology classes taught by the 12 teachers. Although both qualitative and quantitative measures were used during the research, only the quantitative results are discussed in this paper. Using ANOVA's, treatment group by student sex, a comparison of the mean scores was made for all students, as well as for all females and for all males. The results indicated that the experimental group, compared to the control group, had significantly higher mean scores on tests of attitudes toward science, perceptions of science, extracurricular science activities, and interest in a science-related career.     

The written language of deaf adolescents: patterns of performance

A study was conducted of the written language skills of a representative sample of 69 adolescents with severe and profound hearing losses, using both a standardized language sample (TOWL-2) and a letter. The overall results confirmed the generally low levels of performance typically found in this population and the existence of a developmental plateau. Nevertheless, performance levels were not uniformly low. The sample scored relatively high on measures of orthographic conventions and on semantics, but considerably lower on use of grammar. While females scored higher than males, and students in Auditory/Oral (A/O) programs scored higher than those in Total Communication (TC) programs, the profile of scores did not vary by group. In general, the letter elicited higher levels of performance than the standardized sample, although the latter elicited more grammatically complex writing. Factor analysis indicated that the various measures derived from the two samples were associated more strongly by genre than by levels of language form.     

Does the amount of on-screen text influence student learning from a multimedia-based instructional unit?

The present study examines how changes in the amount of on-screen text will influence student learning from a multimedia instructional unit on basic concepts of coordinate geometry. The relative effectiveness of two different versions (short-text and whole-text) of the instructional unit was examined for students who differed in terms of their ability to remember symbolic units, symbolic systems and symbolic interpretations. A total of 101 seventh graders were randomly assigned to work with either the whole-text or the short-text version. Student gains were analyzed using pre-test, post-test and retention test scores. Memory ability was assessed by the sub-tests of the Structure of Intellect-Learning Abilities Test. Results indicated no significant differences between groups who worked with short-text and whole-text versions. However retention scores of high and low memory groups who worked with the whole-text version showed significant differences. The whole-text version was observed to favor students with high memory for symbolic implications. Results suggest that workability of design principles for multimedia instruction may depend on the nature of the task and characteristics of the learner.     

The effects of immediate achievement and retention of middle school students involved in a metric unit designed to promote the development of estimating skills

Three hundred nintey-seven seventh-grade students were studied to determine the effect on immediate achievement and retention of a unit designed to promote the development of estimating skills involved in metric measurement. The study involved five teachers with a total of 15 average- or advanced-level classes divided into the reference and treatment groups. A five-day metric unit was designed so that both groups received exactly the same instruction in metric length, mass, and capacity with the exception of the treatment group's participation in activities relating to the development of estimation skills. Data collected from the Metric Application Instrument and analyzed with analysis of covariance indicated that students in the experimental group did retain significantly more of their improved metric application skills than the students in the reference group. The analysis of the main effects of race, sex, and ability indicated that white students achieved significantly more than black students and that males achieved significantly more than females. Analysis of significant race/ability and sex/race interactions indicated that (a) white students in the advanced group attained significantly greater achievement in metric application skills than black students of equal status and (b) white males significantly retained their metric applications achievement when compared to black males or black or white females.     

The group dynamics approach: A sociopsychological approach for testing the effect of discovery and expository teaching on the science achievement and attitude of young Egyptian students

The purpose of this study was to compare the effectiveness of two instructional modes, discovery and expository, for teaching science knowledge, both application and recall, and science attitude to fifth-grade male and female Egyptian students. The population used for this study consisted of 276 fifth-grade students in two Egyptian schools. Twelve 45-min science classes meeting over a 21-day period made up the treatment period, with each of the two teachers instructing six of the 12 class periods for all eight subgroups of students. The results warrant the following conclusions: Fifth-grade Egyptian students taught by the discovery method scored higher in science achievement, both recall and application, than students taught by the expository method. Students taught by the discovery method scored higher in science attitude than students taught by the expository method. Female Egyptian students scored in science achievement and science attitude similar to males.     

Comparison of anxiety levels of students in introductory earth science and geology courses

Students in geology and earth science courses were not anxious about taking these courses as measured by the State-Triat Anxiety Inventory. Students in each course were split into two grade groups. It was shown that students whose grades were in the higher group had low anxiety, which continued to be reduced during the course. Students in the lower grade group had high anxiety, which increased during the course. There was no difference between anxiety scores of males and females. In general, students who planned to elect additional courses had lower state anxiety and higher grades than students who did not plan to elect additional courses in geology and earth science.     

Replacing Lecture with Peer-led Workshops Improves Student Learning

Peer-facilitated workshops enhanced interactivity in our introductory biology course, which led to increased student engagement and learning. A majority of students preferred attending two lectures and a workshop each week over attending three weekly lectures. In the workshops, students worked in small cooperative groups as they solved challenging problems, evaluated case studies, and participated in activities designed to improve their general learning skills. Students in the workshop version of the course scored higher on exam questions recycled from preworkshop semesters. Grades were higher over three workshop semesters in comparison with the seven preworkshop semesters. Although males and females benefited from workshops, there was a larger improvement of grades and increased retention by female students; although underrepresented minority (URM) and non-URM students benefited from workshops, there was a larger improvement of grades by URM students. As well as improving student performance and retention, the addition of interactive workshops also improved the quality of student learning: Student scores on exam questions that required higher-level thinking increased from preworkshop to workshop semesters.