Derivatives of spin dynamics simulations

We report analytical equations for the derivatives of spin dynamics simulations with respect to pulse sequence and spin system parameters. The methods described are significantly faster, more accurate and more reliable than the finite difference approximations typically employed. The resulting derivatives may be used in fitting, optimization, performance evaluation and stability analysis of spin dynamics simulations and experiments. Keywords: NMR, EPR, simulation, analytical derivatives, optimal control, spin chemistry, radical pair.Comment: Accepted by The Journal of Chemical Physic

The Infiltration Education of Environmental Protection Consciousness on the Analysis Chemistry Teaching

Infiltrate environmental protection awareness into the teaching of analytical chemistry, and combine environmental education and analytical chemistry teaching organically. In order to improve the students' consciousness of environmental protection, strengthen students' self-consciousness and sense of responsibility of environmental protection. Keywords: Environmental protection; Analysis chemistry; Education refor

PTS Chemistry Question Points Class X MIPA-1 Difficulty Analysis in Online Learning (2019/2020) in SMA 10 Bengkulu City

Abstract: PTS Chemistry Question Points Class X MIPA-1 Difficulty Analysis in Online Learning (2019/2020) in SMA 10 Bengkulu City. The purpose of this study is to assess the appropriateness of the level of difficulty of semester assessment questions in Chemistry class X MIPA-1 at SMA 10 Kota Bengkulu. The descriptive method was used in the research, and data was collected in this study through documentation, interviews, and question items. This study analyzes the data collected using the formula   to determine the level of difficulty of the question and is based on the results of the analysis of the question given by the teacher of Chemistry class X MIPA-1. The details of the questions given fall into the category of difficult questions when viewed from the level of difficulty. It can be seen that 17 children (53.125 % ) have difficult questions, 7 children (21.875 % ) have moderate questions, and 8 children (25 % ) have easy questions. Keywords: Analysis, Problem Difficulty Level, Chemistry Lessons

PENGARUH SIKAP GURU PADA PROFESI DAN PENGEMBANGAN DIRI TERHADAP KOMPETENSI PROFESIONAL GURU KIMIA DI KABUPATEN BENGKULU SELATAN DAN KAUR TAHUN 2020

ABSTRACT This research is a quantitative study which aims to determine the effect of thunder in the profession on the professional competence of chemistry teachers, the influence of self-development on the professional competence of chemistry teachers and the influence of teacher attitudes on the profession and self-development on the professional competence of chemistry teachers. The method used is descriptive quantitative method using simple regression analysis and multiple regression. The results of this study are that there is a positive and significant influence both partially and jointly between the independent variables, namely teacher attitudes towards the profession and self-development on the professional competence of chemistry teachers. Keywords: Attitudes of teachers to the profession, Self-development and Professional Competence of Chemistry Teacher

Teacher Qualification and Experience as Determinants of Quality Chemistry Education in Nigeria

The drive for change is crucial for chemistry education advancement and so is teacher qualification and experience. This study investigated teacher qualification and experience as determinants of quality chemistry education in Akwa Ibom State of Nigeria. A survey research design was adopted for the study. Three research questions and three hypotheses were formulated to guide the study. The population consisted of all the chemistry teachers in the 31 Local Government Areas of Akwa Ibom State. The study sample was 130 chemistry teachers randomly selected from the 31 Local Government Areas of Akwa Ibom State during a chemistry training workshop on capacity building. The instrument for data collection was the questionnaire for teachers on quality of chemistry education which contained 20–items. Cronbach alpha analysis was used to determine the reliability of the instrument which yielded .79 and the data collected were analyzed  using descriptive statistics, t-test and analysis of variance. All hypotheses were tested at .05 alpha level of significance. Results showed that there was significant influence of teacher qualification and experience on quality of chemistry education. Based on the findings, it was recommended amongst others, that chemistry teachers with appropriate pre-requisite subjects be admitted into teacher training institutions to enable them acquire needed qualifications, experience and skills for effective chemistry teaching. Keywords: Qualification, experience, pre-requisite, interactive classroom, teacher training.

Effect of Science Process Skills Teaching Strategy on Boys and Girls’ Achievement in Chemistry in Nyando District, Kenya

Science process skills are central to the acquisition of scientific knowledge which is useful in solving problems in our society. This study was intended to compare the effect of science process skills teaching strategy (SPSTS) on boys and girls’ achievement in chemistry.  The study employed quasi-experimental design. The target population consisted of students in the secondary schools in Nyando District. Purposive sampling was used to obtain two district secondary schools  to ensure that the number of boys and girls in each school was about the same. The samples consisted of 90 Form Three students drawn from two district secondary schools.  The study covered two topics selected from the KCSE Chemistry syllabus, that is, Volumetric analysis (Titration) and Qualitative analysis. .Chemistry Achievement Test (CAT) consisting of simple calculations, True and False items, and Fill in blanks were used as a pre-test. After the administration of treatment, which lasted five weeks, the same test was administered to the two  groups  as a post-test. The CAT was adapted from the KCSE Chemistry practical past papers.  The reliability coefficient of 0.88 was estimated for the CAT using Kuder-Richardson (K-R21). The data generated were analyzed using descriptive statistics, t-test, ANOVA, ANCOVA at a = 0.05  level of significance. The results revealed that SPSTS made significant difference on achievement in chemistry between boys and girls. Keywords: science process skills, achievement, chemistry, gende

Development and Validation of an Inventory that Measures Motivated Behavior in Chemistry

The purpose of this study was to develop an inventory that measures students’ motivation toward chemistry (MBIC). In total, 127 students from Technological University of the Philippines were asked to respond to the inventory. Principal component analysis with varimax rotation yielded four factors namely, choice behavior, persistent behavior, study approaches and strategies and resilient behavior. The factor loadings of the items ranged from 0.426 to 0.718, 0.513 to 0.820, 0.457 to 0.718, and 0.441 to 0.621, respectively. The Cronbach alpha for the entire inventory was 0.90; for each scale, alpha ranged from 0.74 to 0.84. High motivators and low motivators showed a significant difference (p <0.01) on their MBIC scores. Correlations between the students’ motivation in chemistry measured using MBIC and students’ achievement in chemistry, cheating behavior and students’ motivation in English are moderate to weak but they are all statistically significant. Findings of the study confirmed the validity and reliability of the MBIC questionnaire. Implications for using the MBIC in research and in class are discussed in the paper. Keywords: Principal component analysis, varimax rotation, cronbach’s alpha, Chemistry achievement, English Motivation, Cheating Behavior, Motivated Behavior Inventor

Analysis of Curriculum Development Approach of National Curriculum for Chemistry Grade IX- X in Pakistan

The term curriculum is often used to only describe the goals, objectives, or plans. Each of these components is essential for effective learning. Curriculum improvement goes before its planning. It includes all partners or stakeholders in the education of the students and considers everything that will make the educational plan beneficiaries useful individuals from their general public. There are various ways to deal with curriculum improvement and development, which are exhibited by ones spotlight on the components of educational plan advancement and the degree of activity of the curriculum. This study was designed to analysis of curriculum development approach of National Curriculum for Chemistry Grade IX- X in Pakistan. The study was related to theoretical and content analysis based. National Chemistry Curriculum for grade IX- X is majorly based on subject- centered curriculum. But on other hand to meet the need of society it demands to cope up with demands of technology. To enhance the skills of students, activities and construction of knowledge by on their own is stressed in aims of curriculum. Curriculum of Chemistry emphasis on developing higher order thinking and skills in students. Keywords: Curriculum, stakeholders, education, chemistry, and students. DOI: 10.7176/JEP/12-13-07 Publication date:May 31st 202