scholarly journals Pengembangan lembar kerja peserta didik kimia berbasis inkuiri terbimbing untuk kelas Xi IPA SMA/MA

2018 ◽  
Vol 5 (2) ◽  
pp. 103-114
Author(s):  
Rina Rizalini ◽  
Herminarto Sofyan
Keyword(s):  
Research Study ◽  
Learning Activities ◽  
Second Grade ◽  
Guided Inquiry ◽  
Appropriateness Criteria ◽  
Second Grade Students ◽  
Significant Difference ◽  
The Mean ◽  
And Control ◽  
Development Step

Penelitian ini bertujuan untuk: (1) menghasilkan Lembar Kerja Peserta Didik (LKPD) kimia berbasis inkuiri terbimbing yang layak untuk peserta didik kelas XI IPA SMA, (2) mengetahui kepraktisan LKPD berbasis inkuiri terbimbing, dan (3) mengetahui keefektifan LKPD berbasis inkuiri terbimbing. Penelitian ini merupakan penelitian dan pengembangan yang menggunakan model Thiagarajan. Prosedur pengembangan meliputi tahap pendefinisian, perancangan, dan pengembangan. Tahap pendefinisian dilakukan survei untuk menganalisis permasalahan dan kebutuhan peserta didik. Tahap perancangan disesuaikan dengan kebutuhan dalam kegiatan pembelajaran. Tahap pengembangan dilakukan validasi ahli materi dan media kemudian diimplementasikan di kelas XI IPA SMAN 2 Wates pada 20 peserta didik. Hasil penelitian menunjukkan bahwa: (1) Hasil validasi LKPD kimia yang dikembangkan dikategorikan layak berdasarkan hasil validasi ahli materi dengan rerata skor 3,8 dan ahli media dengan rerata skor 4,0, (2) tingkat kepraktisan LKPD berada dalam kategori sangat baik, dan (3) keefektifan LKPD memperoleh sig < 0,05 membuktikan ada perbedaan yang signifikan antara kelas eksperimen dan kontrol.Kata Kunci: lembar kerja peserta didik, kimia, inkuiri terbimbing DEVELOPING CHEMISTRY WORKSHEETS BASED ON GUIDED INQUIRY FOR THE SECOND GRADE STUDENTS OF SENIOR HIGH SCHOOLAbstractThis research study aims to: (1) produce valid chemistry worksheets based on guided inquiry for the second grade students of senior high school, (2) know the practically of worksheets based on guided inquiry, and (3) know the effectiveness of worksheets based on guided inquiry. This study was research and development using the Thiagarajan model. The procedure of the development included the steps of defining, designing, and developing. In the defining step, a survey to analyze the problems and student’s needs. The designing step, was conducted the needs of the learning activities. The development step a validation was done by materials and media experts then implementation in class XI science of SMAN 2 Wates to 20 students. The result of the study shows: (1) the chemistry worksheets produced fullfills the appropriateness criteria based on the result of materials experts with the mean score 3.8 and media experts is 4.0 which is in a good category, (2) the practically level is in the very good category, and (3) the effectiveness of worksheets obtaining sig < 0.05 proves there is a significant difference between the experimental and control class.Keywords: worksheets, chemistry, guided inquiry 

The Effect of Exposure to See the Sound/Visual Phonics (STS/VP) in First Grade Literacy Instruction on Academic Assessment in Second Grade

2018 ◽  
Author(s):  
Jeff Knox ◽  
David Krupke
Keyword(s):  
Data Analysis ◽  
Effect Size ◽  
Common Core ◽  
Literacy Instruction ◽  
First Grade ◽  
Second Grade ◽  
Academic Assessment ◽  
Second Grade Students ◽  
Significant Difference ◽  
The Mean

The data were gathered from Common Core assessments administered three times per year to second grade students. Assent permission had been secured, per IRB agreement, from fifty-one parents. Their children were divided into two groups: those having had exposure to Visual Phonics in first grade, and those who did not.<div><br></div><div>Data analysis, using both descriptive and interpretive statistics, did not show any significant difference between the mean scores for the two groups across three assessment periods. Effect size also was generally small to moderate.</div>

scholarly journals THE INFLUENCE OF VISUALIZATION STRATEGY ON READING COMPREHENSION ABILITY

2019 ◽  
Vol 8 (2) ◽  
Author(s):  
Musdizal Musdizal
Keyword(s):  
Reading Comprehension ◽  
Standard Deviation ◽  
T Test ◽  
Second Grade ◽  
Second Grade Students ◽  
Comprehension Ability ◽  
Quasi Experimental ◽  
The Mean ◽  
Visualization Strategy ◽  
And Control

The objective of thisresearch was to know the effect of using Visualization Strategy in teaching recount text on reading comprehensionability at the second grade students of SMPN 4 Kerinci. Then, the type of the researchwas quasi experimental research. Besides, the population of the research was the second grade students of SMPN 4 Kerinci, it was 75 students. Moreover, the sample of this research consisted of 50 students from two classes. There were experiment class and control class. The analysis of data used t-test. The result of the research showedthat there was significance effect of using Visualization strategy toward students’ reading comprehension of recount text. It could be seen of hypothesis was gotten the mean of control class was 60 and the standard deviation was 102 while the experimental class was 67,8 and standard deviation was 118,16. And after doing t-test, it was found that tobserve = 2,6> ttable = 1,68. It can be summarized that there was the significant effect of using visualization strategy in the students’ reading comprehension achievement of recount text. 

The Effect of Exposure to See the Sound/Visual Phonics (STS/VP) in First Grade Literacy Instruction on Academic Assessment in Second Grade

2018 ◽  
Author(s):  
Jeff Knox ◽  
David Krupke
Keyword(s):  
Data Analysis ◽  
Effect Size ◽  
Common Core ◽  
Literacy Instruction ◽  
First Grade ◽  
Second Grade ◽  
Academic Assessment ◽  
Second Grade Students ◽  
Significant Difference ◽  
The Mean

The data were gathered from Common Core assessments administered three times per year to second grade students. Assent permission had been secured, per IRB agreement, from fifty-one parents. Their children were divided into two groups: those having had exposure to Visual Phonics in first grade, and those who did not.<div><br></div><div>Data analysis, using both descriptive and interpretive statistics, did not show any significant difference between the mean scores for the two groups across three assessment periods. Effect size also was generally small to moderate.</div>

scholarly journals The Utilization of Picture and Picture Strategy: An Effective Way to Improve Efl Students’ Writing Ability in Madrasah Tsanawiyah

2020 ◽  
Vol 24 (1) ◽  
pp. 31
Author(s):  
M. Arif Rahman Hakim ◽  
Tri Nur Susanti ◽  
Asiyah Asiyah ◽  
Mohamad Jafre Zainol Abidin
Keyword(s):  
Second Grade ◽  
Control Group ◽  
Writing Ability ◽  
Writing Test ◽  
Second Grade Students ◽  
Significant Difference ◽  
Post Test ◽  
Quasi Experimental ◽  
Efl Students ◽  
And Control

The aim of this study is to find out whether or not there was a significant difference between students who were taught using picture and picture strategy and that of those who were not in writing recount text. The study employed a quasi-experimental study. The population in this study were the second grade students of Madrasah Tsanawiyah in Bengkulu city, Indonesia with a total number are 89 students. Out of this population, 60 students were taken as the sample. They are divided into two groups; experiement and control group, which consisted of 30 students for each group. The data were collected by using writing test. The data obtained were analyzed by using t- test formula. The data were found that the result of t-count post-test (6.34) was higher than t- table (2.00) with α = 5 % and df= 58. The finding of this research shows that there is a significant difference between students in Madrasah Tsanawiyah who are taught using picture and picture strategy and that of those who are not. Based on the result on the study, picture and picture strategy can improve students’ writing achievement in writing recount text evidently

scholarly journals The Effectiveness of the Frayer Model in Modifying the Alternative Scenarios of Some Scientific Concepts of Second Grade Students in Tabuk, Saudi Arabia: فاعليـة نموذج فراير في تعـديـل التصورات البديلة لبعض المفاهيم العلمية لدى طالبات الصف الثاني المتوسط بمدينة تبوك- السعودية

2017 ◽  
Vol 1 (4) ◽  
Author(s):  
Mariam Zouehi Salem Al Harbi
Keyword(s):  
Statistical Treatment ◽  
Second Grade ◽  
Environmental Resources ◽  
Scientific Concepts ◽  
Second Grade Students ◽  
Significant Difference ◽  
Post Test ◽  
Alternative Scenarios ◽  
And Control ◽  
Experimental Group

The objective of the research was to identify the effectiveness of the Frayer model in modifying the alternative perceptions of some scientific concepts in the second grade students in Tabuk. The research materials and tools were included in the "Student Handbook, the Teacher's Guide in the Plant and Environmental Resources Unit, and the Test of Diagnosing Alternative Scenarios of Scientific Concepts." The semi-experimental-design-based (pre-post) approach was applied to a random sample of 60 female students The second was the average grade in the city of Tabuk, where the sample was divided into two groups, one experimental and the other control, divided equally (30) in each group. The statistical treatment was done using frequencies and averages, T test for independent samples, : • There are many alternative perceptions of scientific concepts in the plant and environmental resources unit of the students sample research, and some of them a large proportion up to (91.6%). • There was a statistically significant difference at (α0.05) between the mean scores of the experimental and control groups in the post-application to test the diagnosis of alternative perceptions of some scientific concepts for the benefit of the experimental group students. • The low percentage of alternative perceptions of all scientific concepts in the post-test of the experimental group. This indicates the effectiveness of the Fryer model in modifying the alternative perceptions of the scientific concepts of second-grade students in Tabuk. • The researcher recommends the use of modern strategies that help to modify the alternative perceptions of the scientific concepts of learners.

scholarly journals STUDENTS’ ABILITY IN UNDERSTANDING SIMPLE PAST TENSE THROUGH WHISPER AND WRITE GAME

2019 ◽  
Vol 7 (2) ◽  
Author(s):  
Opik Dwi Indah
Keyword(s):  
Null Hypothesis ◽  
Alternative Hypothesis ◽  
Sampling Technique ◽  
Second Grade ◽  
Past Tense ◽  
P Value ◽  
Second Grade Students ◽  
Significant Difference ◽  
The Mean ◽  
Written Test

This research applied pre-experimental research. The research aimed at finding out whether whisper and write game can increase students’ ability in understanding simple past tense or not. The population of this research was the second grade students of Informatics Department at Cokroaminoto Palopo University. The researcher used purposive sampling technique in determining the students as sample. The sample was class 2F which consisted of 35 students. The instrument of the research was written test. The result shows that the mean score of the posttest is higher than mean score pretest (71.31 > 44.51). Meanwhile, P-Value is 0.00 and α is 0.05. It shows that P-value is smaller than α (0.00 < 0.05). It means that null Hypothesis (H0) is rejected and alternative Hypothesis (H1) is accepted. So, there is significant difference between the result of pretest and posttest after giving the treatment in teaching simple past tense by using whisper and write game. It can be concluded that whisper and write game can increase students’ ability in understanding simple past tense.

IOP Lowering Effects of Ocimum basilicum Seed Extract in Two Rabbit Models of Ocular Hypertension

2019 ◽  
Vol 4 (1) ◽  
pp. 39
Author(s):  
Renu Agarwal ◽  
SK Gupta ◽  
Sushma Srivastava ◽  
Rohit Saxena
Keyword(s):  
Ocular Hypertension ◽  
Antioxidant Properties ◽  
Ocimum Basilicum ◽  
Seed Extract ◽  
Water Loading ◽  
Antiglaucoma Medication ◽  
Lowering Effect ◽  
Significant Difference ◽  
The Mean ◽  
And Control

Introduction: Ocimum basilicum (OB), a herb known for its antihypertensive, anticholinesterase and antioxidant properties was investigated for possible intraocular pressure (IOP) lowering effects in rabbits with ocular hypertension (OHT). Methods: The IOP lowering effect of a single drop of OB extract (OBE) was evaluated in oculonormotensive rabbits using three concentrations (0.25, 0.5 and 1% w/v). The concentration showing maximum IOP reduction was further evaluated in rabbits with water-loading and steroid-induced OHT. Results: IOP lowering effect of OBE 0.5% in oculonormotensive rabbit eyes was significantly greater compared to OBE 0.25% (p<0.05) but was comparable (p>0.05) to OBE 1%. Therefore, 0.5% concentration was selected for further evaluation. Pretreatment with OBE (0.5%) caused significantly lower increase in IOP after water loading amounting to 23.39% above baseline as compared to 54.00% in control eye, 15 minutes post water loading. At 60 minutes, post water loading, mean IOP rise was 95.12% and 63.58% in control and test eyes, respectively. Significant difference between the mean IOP of two eyes persisted during the 2nd hr. In rabbits with steroid induced OHT, OBE 0.5% produced a mean IOP reduction of 24.73% at the end of first hr and the mean peak IOP reduction of 31.63% was observed at the end of 2 hr. A significant difference between the IOP of test and control eyes persisted from 1 to 6 hr. Conclusions: Ocimum basilicum seed extract showed significant IOP lowering effect in rabbits with water loading and steroid induced OHT, however, its utility as an effective antiglaucoma medication needs further investigations.

Investigation of the Association Between Carotid Artery Intima-Media Thickness (IMT) and Cardiac Risk Factors in Patients with Systemic Lupus Erythematosus

2020 ◽  
Vol 16 (2) ◽  
pp. 125-133
Author(s):  
Zahra Rezaieyazdi ◽  
Sima Sedighi ◽  
Masoumeh Salari ◽  
Mohammadreza H. Fard ◽  
Mahmoud R. Azarpazhooh ◽  
...  
Keyword(s):  
Risk Factors ◽  
Insulin Resistance ◽  
Lupus Erythematosus ◽  
Serum Insulin ◽  
Venous Blood ◽  
Test Group ◽  
Control Groups ◽  
Significant Difference ◽  
The Mean ◽  
And Control

Background: The relationship between SLE and traditional risk factors for cardiovascular events was evaluated. Methods: The data regarding sixty patients with SLE and 30 healthy controls (age and sex matched) were gathered using SLEDAI forms. Venous blood (10mL) from all the participants was examined for hs-CRP, homocysteine, VCAM1, CBC, anti-DNA antibody, C3, C4, low-density lipoprotein (LDL), cholesterol, FBS and triglyceride. : The IMT of carotid arteries was determined bilaterally by ultrasound. Other measurements included insulin levels via Elisa (Linco/Millipore Corp) and the HOMA-IR index for insulin resistance. Results: The mean age (in years) in the test and control groups was 28.8±10.3 (18-52) and 33.8±9.13 (18-48), respectively. Results: The mean age (in years) in the test and control groups was 28.8±10.3 (18-52) and 33.8±9.13 (18-48), respectively. : The average IMT in the test group was directly related to serum levels of VCAM1 (p<0.001), homocysteine (p<0.001), cholesterol (p<0.009), LDL (p<0.001), TG (p<0.001), and FPG (p=0.004). The association between other risk factors, insulin resistance, carotid IMT and SLEDAI, was nonexistent. Mean insulin and insulin resistance levels in all the participants were 0.43±2.06 µU/mL and 0.09±0.44, respectively. There was no significant difference between the test and control groups regarding serum insulin and insulin resistance levels (p=0.42 and p=0.9, respectively). None of the risk factors, such as hsCRP, VCAM1, or homocysteine, were shown to be related to insulin resistance (p=0.6, p=0.6, p=0.09, respectively). Conclusion:: Our findings did not show an increase in the prevalence of atherosclerosis in patients with SLE. There was no association between IMT and insulin resistance. However, the former was associated with FPG, total cholesterol, LDL, TG, homocystein and VCAM1.

Efficacy of a Second-Grade Science Program: Increasing Science Outcomes for All Students

2021 ◽  
pp. 074193252198909
Author(s):  
Christian T. Doabler ◽  
William J. Therrien ◽  
Maria A. Longhi ◽  
Greg Roberts ◽  
Katherine E. Hess ◽  
...  
Keyword(s):  
Science Achievement ◽  
Controlled Trial ◽  
Science Instruction ◽  
Effect Sizes ◽  
Second Grade ◽  
Guided Inquiry ◽  
Randomized Controlled ◽  
Second Grade Students ◽  
Cluster Randomized ◽  
Business As Usual

This study, which was reviewed through the Registered Report process, examined the initial efficacy of the Scientific Explorers program (Sci2) on second-grade students’ science achievement. Sci2 is grounded in the growing body of empirical research on science instruction, embedding principles of explicit instruction within a guided inquiry-based design framework. Eighteen second-grade classrooms were randomly assigned to treatment or control conditions. A cluster randomized controlled trial was employed, with 294 students nested within classrooms and classrooms nested within condition. The Sci2 program was implemented for a total of 10 lessons (5 hr) in treatment classrooms, whereas control classrooms provided business-as-usual science instruction. Overall treatment effects were observed on three of four science outcome measures. The reported effects were moderate to large, with effect sizes (Hedges’ g) ranging from 0.48 to 0.94. Moderation analyses indicated that science knowledge at pretest did not moderate Sci2’s effects. Implications for practice and research are discussed.

The effect of face-to-face and virtual prenatal care training of spouses on the pregnancy experience and fear of childbirth of primiparous women: A controlled quasi-experimental study

2021 ◽  
pp. 1357633X2110241
Author(s):  
Zari Doaltabadi ◽  
Leila Amiri-Farahani ◽  
Seyedeh Batool Hasanpoor-Azghady ◽  
Shima Haghani
Keyword(s):  
Prenatal Care ◽  
Fear Of Childbirth ◽  
Virtual Training ◽  
Face To Face ◽  
Significant Difference ◽  
Quasi Experimental ◽  
Care Training ◽  
The Mean ◽  
And Control ◽  
Primiparous Women

Introduction The spouse has a special role in promoting the health of mothers and infants during pregnancy, childbirth, and postpartum. Women's health during pregnancy requires the participation and cooperation of their spouses. Therefore, this study was conducted to determine the effect of face-to-face and virtual prenatal care training of spouses on the pregnancy experience and fear of childbirth of primiparous women. Methods This is a quasi-experimental clinical trial that was conducted on primiparous pregnant women referring to three prenatal clinics in Tehran, Iran. Sampling was done by available method and pregnant women were divided into three groups of face-to-face training ( n = 35), virtual training ( n = 35), and control ( n = 33). The content of training program in the virtual and face-to-face groups was similar and included; nutrition during pregnancy, emotional support, fetal growth and development, advantages and disadvantages of vaginal delivery, planning for delivery, infant care, and danger signs for infants, which were presented in four sessions. The samples in the control group did not receive any training. In the 18th and 20th weeks of pregnancy, the demographic information form, pregnancy experience scale, and version A of the Wijma delivery expectancy/experience questionnaires were completed, and once again in the 37th and 38th weeks of pregnancy, the pregnancy experience scale and version A of the Wijma delivery expectancy/experience questionnaires were completed. Results There was a statistically significant difference in the mean score of pregnancy experience after the intervention between the face-to-face training and control groups ( p = 0.001). There was a statistically significant difference in the mean score of uplifts between the two groups of face-to-face training and control ( p = 0.01), and also between virtual training and control groups ( p = 0.02). There was a statistically significant difference between the two groups of face-to-face training and control in terms of and hassles score after the intervention ( p = 0.04). There was a statistically significant difference between the two groups of face-to-face training and control ( p = 0.02) and also between virtual training and control ( p = 0.04) in terms of the mean score of fear of childbirth after the intervention. Conclusion The results of this study showed that teaching prenatal care to spouses of primiparous women by face-to-face and virtual methods can be a useful intervention in improving the pregnancy experience and reducing the fear of childbirth among primiparous women.

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