Glucose as the sole metabolic fuel: a study on the possible influence of teachers' knowledge on the establishment of a misconception among Brazilian high school students

2008 ◽  
Vol 32 (3) ◽  
pp. 225-230 ◽  
Author(s):  
Maurício Roberto Motta Pinto da Luz

In the present work, I investigated the origin of the misconception that glucose is the sole metabolic fuel previously described among Brazilian high school students. The results of a multiple-choice test composed of 24 questions about a broad range of biology subjects were analyzed. The test was part of a contest and was answered by a sample composed of undergraduate students as well as biologists and practicing biology teachers. The majority of the responders had difficulties in recognizing the existence of gluconeogenesis and the possibility of ATP production using other fuels other than carbohydrates. Biology teachers and biologists seemed to either lack the knowledge or present the misconception regarding energy-yielding metabolism found among students. I argue that in both cases, biology teachers are likely to teach metabolism-related subjects in a manner that may contribute to the appearance of the misconception among high school students.

2020 ◽  
Vol 4 (2) ◽  
pp. 77-97
Author(s):  
Brian Ricard Wola ◽  
Muslimin Ibrahim ◽  
Tarzan Purnomo

The development and use of diagnostic tests in the form of multiple choice four levels in biology learning are still lacking. This study aims to develop a valid and reliable four-tier multiple-choice test instrument to identify the conception profile of high school students on the concept of transport across membranes. The research method is in the form of development research by adapting the Kilic and Saglam models which consist of three stages, namely defining content, obtaining information on student misunderstandings, and developing tests. The research instruments used were validation sheets, test instruments, and interview sheets. Descriptive statistical analysis techniques were used to analyze the data in this study. The results showed that 15 items developed were declared valid and the reliability coefficient of the test was 0.82, including the very reliable category. Thus, it can be concluded that the four-tier multiple-choice test instrument developed has met the validity and reliability requirements to identify the conception profile of high school students about the concept of transport across membranes. The four-tier multiple-choice test developed can be used by high school teachers as an accurate test to identify the conception profile of their students because it can distinguish between students who understand the concept, do not understand the concept, or who experience misconceptions about the concept of transport across membranes.


2020 ◽  
Vol 8 (2) ◽  
pp. 74
Author(s):  
Pratiwi Hassan ◽  
Lukman Abdul Rauf Laliyo ◽  
Deasy Natalia Botutihe ◽  
Romario Abdullah

This study aims to determine the critical thinking skills of high school students on salt hydrolysis. This research is quantitative descriptive. The population used in this study were all class XI IPA SMA in Gorontalo with a total sample of 64 respondents. Collecting data using a five-level multiple choice test instrument on salt hydrolysis material with an instrument validity value of 100%. The data analysis technique used in this research is descriptive quantitative. The results obtained the percentage of indicators of critical thinking skills, namely the focus criteria or Q1 level an average of 77.60%, the Reason criteria or Q2 level of 23.95%, the inference criteria or Q3 level of 8.85%, at Situation criteria or the Q4 level of 4.34% and the Clarity criteria or the Q5 level of 3.12%. Based on the results of the study it can be concluded that the ability of high school students to think critically on salt hydrolysis is 51.56% of students are in the very low category, 46.87% of students are in the low category and 1.56% of students are in the moderate category.


Author(s):  
Chuan-Yung Huang ◽  
Yi-Chun Hung ◽  
Chee-Seng Tan ◽  
Siew-May Cheng ◽  
Shun-Hao Hu

AbstractThe impact of demoralization among the general population has received little attention due to the lack of an appropriate measurement. Three studies involving 1,143 high school and undergraduate students in Taiwan were thus conducted to develop and validate a tool to assess demoralization. A pool of 50 items was first developed and administered to high school students. Exploratory factor analysis results supported a 5-factor solution with 15 items (Study 1). Study 2 compared the potential models using confirmatory factor analysis and found the 5-factor second-order model with 15 items the best fit model. The 15-item Mandarin version of Demoralization Scale (DS-M-15) was also found to have good internal consistency, test–retest reliability, and (concurrent and predictive) validity in a sample of undergraduate students (Study 3). Taken together, the converging findings show that the DS-M-15 is a promising tool for assessing demoralization among Chinese adolescents and emerging adults.


Author(s):  
Dean Kashiwagi ◽  
Alfredo Rivera ◽  
Jake Gunnoe ◽  
Jacob Kashiwagi

Arizona State University has been involved in identifying the future Facility Manager (FM) paradigm which results in a sustainable FM profession. The $16M, 20-year international research program has identified, created and tested out a solution to the almost impossible task of replacing the aging FM professionals. The research has identified the future FM as one who is leadership based and leads the entire supply chain from inside the organization. This paper will cover the three year results of finding the future FM by accessing the top 10% of ASU’s 85,000 students through Barrett’s Honors Program, 7th – 10th graders through the Barrett’s Summer Honors Program, and culminating this year in placing the education in one of the top private schools in the state of Hawaii for high school students, testing the approach on 116 Brazilian engineering undergraduate students and getting approval for testing a 14 week program in the Tempe High School. The model is proposed as a prototype for future FM professionals and how the FM professional can become sustainable.


2021 ◽  
Vol 6 (2) ◽  
pp. 78-86
Author(s):  
Binti Muifatun Nazilah ◽  
Peptia Asrining Tyas ◽  
Wiwik Umiyati

The first language (L1) usage is still found during the English lesson, specifically in non-native English countries. This may be a debatable issue among experts. Hence, investigation on students’ perception is helpful in this study. It will give an insight into students’ preferences for learning the language. The previous studies related to this topic were mainly focused on senior high school and undergraduate students as the subject. Therefore, this present study proposed to explore the perception of junior high school students. In conducting this study, the researcher applied a quantitative survey design. There were 29 questions in three sections that were distributed to investigate: (1) the language used in the EFL classroom, (2) students’ attitudes as well as (3) students’ well-being during the English foreign language lesson. The participants were 101 students of SMP Shalahuddin Malang. The findings revealed that students have positive responses towards the use of Indonesian langauge during the EFL lesson.   DOI: 10.26905/enjourme.v6i2.6701


2020 ◽  
Vol 17 (34) ◽  
pp. 45-52
Author(s):  
Fatma SUKMAWATI ◽  
Punaji SETYOSARI ◽  
Sulton SULTON ◽  
Purnomo PURNOMO

Biology learning is highly recommended to be presented contextually following daily experience and phenomena. This study, a quasi-experimental research using a pretest-posttest non-equivalent control group design, aimed to understand the effect of project-based collaborative learning towards the concept mastery of mushrooms. The subjects of the study were 75 tenth grade of high school students in Surakarta City, Indonesia, divided into two classes: 38 students in the experimental class 37 in the control class. In the experimental class, the students were treated with project-based collaborative learning strategies. In project-based collaborative learning strategy, students were challenged to create a project on oyster mushroom cultivation (Pleurotus ostreatus) With the media garden waste such as sawdust. In the control class, the students were treated with direct instruction. The instrument used was a multiple-choice test and essay developed by researchers to measure students' concept mastery towards mushrooms. Research data were analyzed by independent sample t-test. The results found that the average n-gain score for the experimental and the control classes were 63.09% and 45.73%, respectively. Moreover, all indicators of mushroom concept mastery showed the n-gain scores for the experimental class higher than the control class. Analysis of independent sample t-test proved that the significant differences existed between direct instruction and project-based collaborative learning in improving the concept mastery of mushroom. Finally, This research concluded that project-based collaborative learning is more effective in enriching the concept mastery than direct instruction.


2018 ◽  
Vol 8 (6) ◽  
pp. 147
Author(s):  
Abolfazl Shirban Sasi ◽  
Toshinari Haga

Learning Japanese has become very common amongst Taiwanese high school and university students, ranking thesecond most sought for language. A concise study of the likeable activities in a typical language class for theTaiwanese students seems to be quite useful. Therefore, the present study has concentrated on the senior high schoolstudents’ opinion about the ideal Japanese class. Subjects in this research were 478 students (181 boys, and 297 girls)in nine private schools in three counties. The instrument was a 10-item multiple-choice Chinese questionnaire basedon Littlewood (2010). The findings illustrated that females and males had similar opinions concerning thecommunicative language activities in an ideal Japanese class. They revealed much more differences related tonon-communicative activities, though. Moreover, both boys and girls displayed the highest interest in a relaxed classatmosphere, and the lowest interest in the usage of smartphones in the activities in the class.


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