The jotter book concept is not a novel method in scientific research. This practice is common not only among undergraduate students but also among postgraduate students, scientists, and researchers who use it to understand theories, concepts, and newly learned experimental procedures since it is important and significant pre-laboratory (pre-lab) preparation before an experiment is conducted. However, using a jotter book as one component of alternative pre-laboratory (pre-lab) assessment in assessing student achievement at pre-University level is something that has never been done before. In this paper, we proposed the rationale in implementation of the jotter book as one of the alternative assessments for the Chemistry course (SK0011-Practical Chemistry I and SK0021-Practical Chemistry II) for the foundation of science students in the Preparatory Centre for Science and Technology (PPST), Universiti Malaysia Sabah. Sample of 353 students from the intake session 2020/2021 are involved in this study. The improvement in the student grade from semester 1 to semester 2 will be discuss in this paper as the preliminary study.
Modifying the glass features under controlled parameters is vital to achieving optimum final product for diverse applications. In this study, tellurite glass was prepared using melt quenching technique and heat treated at varying temperatures. The thermal stability, chemical durability, and surface morphology were investigated by implementing DTA and SEM-EDX. TZNE glass possesses ΔT of 115 °C. The weight loss of glass in distilled water and ammonium hydroxide solution became apparent for glass heat treated at higher temperature due to decrease in its structural stability. SEM micrographs manifested the emergence of acicular shape and globular shape particles deposited on the glass surface.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.