scholarly journals INVESTIGATING GRADE 10 LEARNERS’ ACHIEVEMENTS IN PHOTOSYNTHESIS USING CONCEPTUAL CHANGE MODEL

2014 ◽  
Vol 13 (2) ◽  
pp. 155-164
Author(s):  
Benedict Tlala ◽  
Israel Kibirige ◽  
Joseph Osodo

Challenges in the learning photosynthesis topic may arise from misconceptions. This study investigated Grade 10 learners’ achievements in photosynthesis using the Conceptual Change Model (CCM) to minimize misconceptions and to develop understanding of photosynthesis in rural high schools in South Africa. A quasi-experimental design was used with a sample of 78 Grade 10 learners: 39 Experimental Group (EG) and 39, Control Group (CG). Achievement test, learning materials and a questionnaire were used to collect data. Data were analysed using descriptive statistics, t-test, Analysis of covariance (ANCOVA) and Pearson correlation. Results from post-tests show that EG taught using the CCM exhibited higher achievements than the CG taught using traditional approach. ANCOVA show that there were significant differences in performance between pre- and post-test of the EG. Performance and attitudes correlation was (r = 0.89) for EG and (r = 0.33) for CG, suggesting that CCM positively influenced learners’ attitudes towards Life Sciences. Key words: achievement, attitude, conceptual change, misconceptions.

2017 ◽  
Vol 16 (2) ◽  
pp. 228-240
Author(s):  
Syuhendri Syuhendri

The purpose of this research was to investigate the effectiveness of conceptual change learning approach based on conceptual change model over traditional instruction on the improvement of physics education undergraduate students’ conceptual understanding in Newtonian mechanics. A quasi experimental research method with pre-test and post-test control group design was employed. The sample chosen based on purposive technique sampling comprising of 73 students was in two groups selected randomly each as experimental and control group. Predict-Observe-Explain-Apply (POEA) and using Conceptual Change Texts (CCT) strategies were implemented in the experimental group. The Force Concept Inventory (FCI) in Indonesian was used to collect data before and after treatments. The results show that the conceptual understandings of students who were taught using strategies under conceptual change approach was significantly better than those of the traditional approach. The research confirmed that only learning based on conceptual change model could improve learners’ Newtonian mechanics conceptual understanding. Key words: conceptual change approach, conceptual change texts, predict-observe-explain-apply, Newtonian mechanics.


2020 ◽  
Vol 10 (4) ◽  
pp. 1
Author(s):  
Bertha Ese Omoruan ◽  
Patrick Uzo Osadebe

  The study investigated pupils’ achievement in rational numbers, using constructivist models and traditional approach of instruction as connecting points between pupils’ prior knowledge of whole numbers concept and the new concept. Pre-test post-test non-equivalent control group quasi-experimental research design was adopted. A research question guided the study and was answered using descriptive statistics; and a formulated corresponding null hypothesis was tested at 0.05 level of significance, using analysis of covariance (ANCOVA). A sample of 103 pupils was used for the study. A test instrument titled Rational Numbers Achievement Test (RNAT) was developed, validated and used to generate data. The instrument had 0.74 reliability index of internal consistency through the use of Kuder Richardson formula 21. The results showed that different types of representation are central to conceptual understanding, and are able to resolve pupils’ difficulties and misconceptions about rational numbers. Based on these findings, it was recommended that constructivist models of instruction should be part of the main instructional approaches for the teaching-learning of mathematics at the Basic Levels of the Nigerian school system.


2014 ◽  
Vol 13 (3) ◽  
pp. 298-315
Author(s):  
Achillefs Kapartzianis ◽  
Jeanne Kriek

This study contributes to a growing literature that investigates vocational students’ conceptual understanding of electricity by proposing a multidimensional and pragmatic approach to conceptual change. Conceptual change model-based activities were designed in a six-stage conceptual change model and were incorporated into a four-week course. The effectiveness of these activities was measured in terms of changing these students’ misconceptions about simple electric circuits towards scientifically accepted ideas in terms of their revolutionary versus evolutionary nature and the extent of transfer of learning. Transformative mixed methods research design was used consisting mainly of a one-group pre-test post-test design with DIRECT Test 1.2 as a research instrument. Paired samples t-test analysis for 15 students’ test scores indicated that there was a statistically significant difference between students’ pre- and post-test scores. The results of the frequency analysis in both pre- and post-tests show a significant percentage drop in the number of students having the identified misconceptions. The majority of students during post pre-test interviews justified their answers incorrectly, but more than 80% answered correctly in the post post-test interview. Key words: conceptual change, conceptual change model, electric circuits, misconceptions, vocational education.


2021 ◽  
Vol 6 (1) ◽  
pp. 87-101
Author(s):  
Abdul Hamid ◽  
Nukhbatul Bidayati Haka

This research aimed to reduce students’ misconceptions using a conceptual change model assisted by the integrated Android-based Quran. The study used a quasi-experimental design with a one-group pretest-posttest design. The study involved 95 eleventh-grade students MAN 1 Bandar Lampung. The research instrument was multiple-choice questions equipped with a certainty of response index (CRI) developed based on the revised Bloom taxonomy indicator. The data collection techniques used were tests (pretest and posttest). The results of the study obtained a reduction value of misconceptions in the pretest, namely understanding the concept of 47 % (moderate), misconception 48 % (moderate), and not understanding the concept of 5 % (low). The posttest score decreased (reduced) the proportion of misconceptions to 42 % (moderate), not understanding the concept to 4 % (low), and understanding the concept to 55 % (moderate). The hypothesis testing employed was the one-sample t-test. Therefore, H1 was accepted. It means that the conceptual change model (MCC) with Android-based Quran media can reduce students’ misconceptions with a criterion of 0.71 (medium interval). Thus, the results of this research can add to the treasury of studies on the reduction of misconceptions through the MCC model based on the Android-based Quran media. Also, as a practical use for teachers to deepen the concept of biology to guide students to understand the concept of the material better correctly.


2019 ◽  
Vol 1 (1) ◽  
pp. 108-114
Author(s):  
I Made Wirta

The main objective of the present study is to investigate the effect of implementing innovative learning approaches upon English students’ achievement. The study was quasi experimental study using the post-test only control group design involving 35 students altogether selected using census sampling technique. The instrument which is used to gather data in the study was test. There were two tests used to gather intended data. They were linguistic test and student achievement test. The obtained data were analyzed statistically using descriptive and inferential analysis. The analysis of covariance was conducted to test the hypotheses.


2021 ◽  
pp. 104973152110014
Author(s):  
Siu-ming To ◽  
Xiaoyu Liu

Purpose: Using a nonrandomized control group pretest–posttest assessment, this study aimed to examine the outcomes of community-based youth empowerment initiatives that were informed by design thinking. Method: A total of 553 youth living in Hong Kong were recruited to participate in this study. Among them, 213 youth self-selected to join the experimental group, and 340 youth joined the two control groups. Multivariate analysis of covariance and post hoc group comparisons were used to examine the differences among the three groups at the posttest assessment. Results: The results indicate a positive improvement in creative self-efficacy among participants of the experimental group compared to the two control groups. Significant differences were also found between the experimental group and the second control group in terms of youth–adult partnerships and youth empowerment in the community. Conclusion: Youth empowerment programs informed by design thinking may reinforce self-efficacy beliefs by encouraging youth to bring about innovations in their community.


2021 ◽  
Vol 12 (3) ◽  
pp. 1064-1073
Author(s):  
Norlia Mat Norwani

This study was conducted to determine the effectiveness of instructional aids in the teaching and learning (T&L) of Principles of Accounting among form four students. This is quasi-experimental study involving 60 form four students in a secondary school in Klang, Selangor. The instructional aids utilized are concept charts, brief notes, powerpoint slides and supported by the text book. Pre-test and post-test were conducted to assess students’ performance before and after the treatment. The findings of the study found that the performance of experimental group is significantly better than the control group using the traditional approach. Consequently, the positive impact of using various aids in T&Lcannot be denied. Teachers should take the time to incorporate instructional aids in T&L to assist students learning. School administrator must provide the facilities required to encourage teachers to employ instructional aids in T&L.


Author(s):  
Rafidah Abd Karim ◽  
Airil Haimi Mohd Adnan ◽  
Abdul Ghani Abu ◽  
Noorzaina Idris ◽  
Izwah Ismail

<p class="0abstract">This study examined the use of a mobile-based technological tool known as Mobile-assisted Mind Mapping Technique (MAMMAT) to support ESL university students’ argumentative writing skills performance. The participants of this study were 45 ESL university students from two lecture groups at a public university campus in Peninsular Malaysia. The study employed a quasi-experimental research design. The experimental group was taught utilizing the MAMMAT whilst the control group was taught utilizing the conventional method. The pre-test and post-test scores were analysed through analysis of covariance (ANCOVA). The analysis of covariance (ANCOVA) results showed that there were statistically significant differences between the groups when test items were measured. As a conclusion, the MAMMAT has supported ESL university students’ argumentative writing skills performance. The study implicates that the use of MAMMAT can support students’ argumentative writing in ESL classroom.</p>


2021 ◽  
pp. 186-191

Background and Objective: This study aimed to determine the effect of synchronization of brain waves in alpha, beta, and theta bands by the Binaural beats on visuospatial working memory. Materials and Methods: The present quasi-experimental study was conducted based on a pretest-posttest control group design. In this regard, 60 students were selected by the available sampling method and randomly divided into three experimental groups and one control group (n=15 each). All subjects were assessed in the pre-test and post-test stages by the Corsi blocks tapping test. Participants in the experimental groups received 15, 9, 5, and 6 Hz binaural beats for 12 min. The collected data were analyzed using a one-way analysis of covariance. Results: The findings showed that 15 Hz binaural beats (beta bands) significantly improved the subject's visuospatial working memory (P<0.05). Conclusions: Given that working memory is the basis of numerous cognitive functions, using 15 Hz binaural beats could improve the visuospatial working memory in these people


Author(s):  
Batol Ramazani ◽  
Foroogh Bakhtiari

Background: Moving away from family can cause psychological and emotional trauma for the elderly. Accordingly, the present study aimed to evaluate the effectiveness of spiritual therapy on loneliness feeling among the elderly in a nursing home in Isfahan. Methods: The method was quasi-experimental with a pretest-posttest design and a control group. The population of this study included all of the elderly in Sadeghieh nursing home in Isfahan in 2018. The sample of this study included 30 elderly people being selected by purposive sampling and then randomly included in the experimental and control groups (15 elderly people in each group). The experimental group received the therapeutic interventions related to spiritual therapy at eight sessions of 90 minutes every week for two months. Then, the subjects in both groups were re-tested. The used instruments included Russell’s loneliness questionnaire (1996). After collecting the questionnaires and extracting the raw data, the data analysis was conducted using descriptive statistics and analysis of covariance by SPSS23 statistical software at 0.05 error level. Results: spiritual therapy had a significant effect on loneliness among the elderly in the nursing home (p < 0.001). In this regard, this therapy could reduce loneliness among the elderly in the nursing home. The effect of spiritual therapy on loneliness among the elderly in the nursing home was 53%. Conclusion: Based on the research findings, spiritual therapy can reduce loneliness among the elderly by the techniques such as taking responsibility, assigning cases to God, strengthening the intention, and deleting negative thoughts.


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