The correlation between concept mastery and stage of moral reasoning student using socio-scientific issues on reproductive system material

This study aims to determine the effect of the Argument-Driven Inquiry (ADI) learning model application on the concepts mastery and argumentation skills of high school students on reproductive system material. The research method used quasi-experimental and non-equivalent control group design. The sample of this research were second-grade high school MIPA students in one of the public high schools in Bandung, which consists of 30 students in the experimental class and 33 students in the control class. The sample was taken by using the purposive sampling technique. The instruments used consisted of a concept mastery test in the form of multiple choices, an argumentation ability test in the form of an essay, and questionnaire of students’ responses to the ADI model. The results showed that the application of the ADI learning model significantly affected the students' concepts mastery on reproductive system material in the experimental class compared to the control class, especially in the cognitive aspects of C3 (applying). The results also show that the application of the ADI learning model significantly affects the ability of argumentation, especially on the warrant component. Student response data shows that students respond very well to the application of the ADI learning model. Therefore, the ADI learning model is recommended for biology teachers to improve students’ concepts mastery mastery and argumentation skills in other biological materials.

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Moral reasoning is the process of asking moral questions and answering them

Behavioral and Brain Sciences ◽

10.1017/s0140525x18002534 ◽

2019 ◽

Vol 42 ◽

Author(s):

Mark Alfano

Keyword(s):

Moral Reasoning ◽

Dependent Process ◽

Asking Questions ◽

Path Dependent ◽

Path Dependent Process ◽

Moral Questions

Abstract Reasoning is the iterative, path-dependent process of asking questions and answering them. Moral reasoning is a species of such reasoning, so it is a matter of asking and answering moral questions, which requires both creativity and curiosity. As such, interventions and practices that help people ask more and better moral questions promise to improve moral reasoning.

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Vesicular system associated with spermiogenesis of bullfrog

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100128377 ◽

1987 ◽

Vol 45 ◽

pp. 818-819

Author(s):

K. C. Liu ◽

S. F. Tsay

Keyword(s):

Electron Microscopy ◽

Microscopic Study ◽

Electron Microscopic Study ◽

Reproductive System ◽

Seminiferous Tubule ◽

Rana Catesbeiana ◽

Routine Procedure ◽

Electron Microscopic ◽

Twisted Tubules ◽

Electron Lucent

In the histologic and electron microscopic study of the male reproductive system of bullfrog, Rana catesbeiana, a vesicular system associated with spermiogenesis was observed. It appeared in the lumenal space of the seminiferous tubule (Fig. 1), in the heads of spermatids (Fig. 2), associated with the chromatins of the spermatid (Fig. 4). As deduced from sections, this vesicular system consisted of vesicles of various size or a large group of waving and twisted tubules (Fig. 3), After routine procedure of treatment for electron microscopy, the lumens of both of the vesicles and tubules were electron lucent.In human, vesicles and vesicular system associated with reproductive cell and tissue were reported. In abnormal spermiogenesis, flower-like body, actually vesicles, and giant vesicle associated with the head of spermatid were observed. In both cases the number of vesicle was limited from a single one to a few.

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