The Number of 2-Element Subsets of a 100-Element Set: Seventh-Grade Solutions

1975 ◽  
Vol 68 (4) ◽  
pp. 336-337
Author(s):  
Ernest Woodward

In the new programs section of the October 1973 edition of the Mathematics Teacher is an article describing the Comprehensive School Mathematics Program (CSMP). The secondary school portion of the program is written for bright, verbal, well-motivated junior and senior high school students. Last year I observed a seventh-grade class at Burt Junior High School in Clarksville, Tennessee, where these materials (Elements of Mathematics, Book O)were being used. On that particular day the class was studying subsets. The assignment from the previous day included a problem where the students were to find the number of 2-element subsets that a 100-element set has.

2020 ◽  
pp. 209653112093024
Author(s):  
Hengjun Tang ◽  
Wee Tiong Seah ◽  
Qiaoping Zhang ◽  
Weizhong Zhang

Purpose: Research has confirmed that students’ mathematics values significantly affect their mathematics learning. Accordingly, understanding how students’ values form and change, especially during different learning stages, is an important topic. Design/Approach/Methods: This study administered a questionnaire to investigate the values of primary, junior high, and senior high school students in Eastern China. A principal component analysis was conducted to investigate the factor structure of the students’ learning values. Then, paired sample t-tests were used to examine the differences in the two continuous categories ranking of each group, and a one-way analysis of variance with a Brown–Forsythe test was used to test the differences in the ranking of each dimension by the different grade-level groups. Findings: We found that students’ mathematics learning values consist of seven elements: culture, memorization, technology, objectism, practice, understanding, and control. Students placed different degrees of importance on these seven elements at different learning stages. Additionally, we found that junior high school is a critical period of change in students’ values. Originality/Value: These findings will be invaluable to teachers and educators as they reflect on their teaching approaches. Moreover, the findings that students’ values undergo changes in the course of their schooling are important information for educators seeking to foster students’ learning.


Author(s):  
Nur Indah Puspita Sari ◽  
Sakinah Ubudiyah Siregar

This study aims to see the strengths and weaknesses of the teacher in the teaching process based on the competence aspects of the mathematics teacher and to describe the situation and state of the teacher's competence when in the learning process in the classroom based on student perceptions associated with the competence of the students themselves. Data processing techniques using data analysis Structural Equation Modeling (SEM). The population of this study were junior high school students in Labuhanbatu. The sampling technique used was proportional random sampling leading to simple random sampling, the number of samples obtained was 219 students. Techniques in the data collection process were carried out by distributing a questionnaire on students' perceptions of the mathematics teacher's performance consisting of 48 questions in the form of a Likert scale.


2012 ◽  
Vol 8 (4) ◽  
pp. 1-15
Author(s):  
Li-Ling Chao ◽  
Yu-Der Wen ◽  
Pin-Chen Chen ◽  
Chung-Chi Lin ◽  
Shu-Hua Lin ◽  
...  

This study emphasizes student-centered learning principles in developing an algal fuel cell teaching module for a student environmental education program. Using the algal battery, one of the authors (a junior high school science teacher) conducted the teaching module in eight classes, with 67 elementary school students in grade 5, 64 junior high school students in grade 8, and 159 senior high school students in grade 10, respectively. Results from the pre- and post- achievement tests of the algal fuel cell teaching module showed that the average score of elementary school, senior high school, and junior high school students increased by 23.73, 18.09, and 17.42 points, respectively, with a significant difference between post- and pretest scores (p<0.001). The gross average of student responses to the questionnaire was 4.04. The mean score for elementary school students significantly differed (p<0.01) from junior high and senior high school students.


Author(s):  
Anastasia Dewi Anggraeni

This research aims to compare the loneliness and hope among orphans in the Tanjung Barat orphanage, South Jakarta. The research method used a descriptive qualitative with a case study method. Data collection techniques were interviews, observations, and filling in a simple questionnaire. The sample used 36 children of Tanjung Barat orphanage consisting of elementary school, junior high school and senior high school students. This was done on site and compared to the literature that had been previously established.  Comparing loneliness and hope among orphans aimed to identify and find ways of mapping loneliness and hope among orphans who had been explored and investigated empirically, to find out the comparison and contrast with the mapping of loneliness and hope expressed among them, and to find examples of self-assessment to evaluate and encourage the mapping of their loneliness and expectations among them and present them to caregivers, parents and professionals. By comparing their loneliness and hopes they can actively engage in social interaction between themselves, others, and improve their personal, welfare and life skills.


2021 ◽  
Vol 20 (2) ◽  
pp. 52-60
Author(s):  
Dwi Afrimetty Timoera ◽  
Asep Rudi Casmana ◽  
Iqbal Syafrudin ◽  
Yasnita

ABSTRACTThe purpose of this study was to find out about (1) The level of legal awareness regarding the dangers of smoking for the health of junior and senior high school students (2) Strategies that need to be done to increase legal awareness regarding the dangers of smoking for the health of junior and senior high school students in the capital city of Jakarta. This research is a research using descriptive qualitative. The method of collecting data is through online interviews. Respondents in this study were 13 civic education teachers at the junior and senior high school levels and 10 junior high school students. The data analysis technique uses data reduction, data display and data verification. The results showed (1) The level of legal awareness of students against the dangers of smoking was very good, this can be seen from the majority of students obeying the smoking prohibition rules in schools. Even so, there are still some unscrupulous students who are caught smoking and bringing vapes (e-cigarettes) to school. (2) The strategy that has been carried out by teachers in schools to increase the legal awareness of students regarding the dangers of smoking for the health of junior high and high school students in the capital city of Jakarta is by increasing legal knowledge and awareness of students through repressive, preventive and maximally repressive through learning civic education. ABSTRAKTujuan penelitian ini adalah untuk mengetahui tentang (1) Tingkat kesadaran hukum terkait bahaya merokok bagi kesehatan siswa-siswi SMP dan SMA di DKI Jakarta dan Banten; (2) Strategi yang perlu dilakukan untuk meningkatkan kesadaran hukum terkait bahaya merokok bagi kesehatan siswa-siswi SMP dan SMA di DKI Jakarta dan Banten. Penelitian ini adalah penelitian dengan menggunakan kualitatif deskriptif. Metode pengumpulan data melalui wawancara dan analisis datanya menggunakan reduksi data, display data dan verifikasi data. Hasil penelitian menunjukkan (1) Tingkat kesadaran hukum berlalu lintas peserta didik di Kota Makassar tergolong cukup baik, hal ini terlihat dari mayoritas siswa-siswi mematuhi aturan larangan merokok di sekolah. Meskipun demikian, masih ada beberapa oknum siswa yang ketahuan merokok dan membawa vape (rokok elektrik) ke sekolah. (2) Strategi yang telah dilakukan oleh para guru di sekolah untuk meningkatkan kesadaran hukum peserta didik terkait bahaya merokok bagi kesehatan siswa-siswi SMP dan SMA di DKI Jakarta dan Banten adalah dengan cara meningkatkan pengetahuan dan kesadaran hukum para siswa-siswi melalui upaya preemtif, preventif dan represif secara maksimal.


2018 ◽  
Vol 23 (1) ◽  
pp. 52
Author(s):  
M Nova ◽  
Ni Nyoman Padmadewi ◽  
I Nyoman Pasek Hadisaputra

Kurikulum 2013 membutuhkan insersi pendidikan karakter dan integrasi teknologi. Penitian ini bertujuan untuk 1) mengidentifikasi karakteristik dari multimedia interaktif berbasis karakter, 2)menjelaskan proses perancangan multimedia interaktif berbasis karakter, 3) menjelaskan produk multimedia interaktif berbasis karakter, dan 4) menjelaskan kualitas multimedia interaktif berbasis karakter. Penelitian ini merupakan Penelitian dan Pengembangan yang menggunakan pendekatan metode campuran, sequential exploratory design, dan Four-D model.


2019 ◽  
Vol 2 (2) ◽  
pp. 97-105
Author(s):  
Dody Sugiarto ◽  
Agci Hikmawati

Abstract: The background of conducting this reseach began with the intention to develope an approprite English learning media for Junior High School students in the rural area by utilizing the traditional games. The seventh grade students of SMP N 1 Mendobarat, Bangka Regency academic year of 2018/2019 were involved as the population with 30 students as the samples taken by using purposive random sampling. In this Research and Development Research (R&D), the data were obtained from the distributed pre-test and post-test questionnaires. The procedures applied in this research were the one adopted from Lee and Owen (2004) with the following steps; analyzing students’ need by distributing the need analysis questionnaire, designing English learning media according to the data of need analysis, developing the first draft of the learning media, asking experts’ judgement, and validating it. Two kinds of test which were Alpha testing that involved material and content experts, and Beta testing that involved students were applied in the validation phase. Based on the finding of the research, it was found that the traditional games based English learning media was feasible to use by the seventh grade students of SMP N 1 Mendobarat, Bangka Regency. Therefore, this research leads to the recommendation to the students and teachers to consider traditional games as a feasible media to learn English.Key words: Traditional Game, Learning Media, English


1991 ◽  
Vol 38 (8) ◽  
pp. 34-37
Author(s):  
A. C. Loewen

Manipulative materials have become an increasingly important part of mathematics instruction. The point has been argued that manipulatives make mathematics more intriguing, easier to understand, and even more fun to learn. The challenge for the mathematics teacher is to find new and interesting materials that help students better understand mathematics and better remember the mathematics that they have learned. Lima beans and small paper cups are one effective alternative for helping junior high school students learn how to solve simple algebraic equation.


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