Jurnal Pendidikan Biologi Undiksha

Pengembangan Modul Pembelajaran Konsep Genetika dengan Filosofi Mapalus dan Pendekatan Keterampilan Metakognitif

Yermia Semuel Mokosuli — Sun, 30 Jun 2024 00:00:00 +0000

Learning in the era of the industrial revolution 4.0 requires students to learn how to integrate concepts at all levels of organization and complexity as well as synthesize and analyze information that connects conceptual domains. A metacognitive approach will instill the skills the current generation needs to interact in society and the world of work. The aim of the research is to describe students' responses to the genetics learning module with the Mapalus philosophy approach to metacognitive skills. This research applies development research methods. Media experts' responses to the module were valid (78%), while material experts' responses were very valid (85%). The genetic concept module developed using the Mapalus local wisdom approach produced good responses from students both in terms of use and cognitive assessment results. The module also raises students' soft skills in their use, namely cooperation, leadership, the ability to divide tasks in groups and present the results of group work. The module developed is also able to improve students' metacognitive abilities. Students' ability to understand problems increased from 65 to 80 (maximum score 100). The ability to perform calculations increased from 55 to 70. The ability to make problem solving plans increased from 67 to 75. The Genetic Concepts Module with the mapalus philosophy and metacognitive approach can be applied in schools.

Komparasi Kinerja Pertumbuhan Ikan Nila (Oreochromis niloticus) pada Sistem Resirkulasi dengan Media Filter yang Berbeda

Ni Nyoman Dian Martini — Sun, 30 Jun 2024 00:00:00 +0000

The quality of water as a maintenance medium in the recirculation system can decrease rapidly due to feeding activities
carried out by fish such as waste in the form of faeces and leftover feed that settles to the bottom of the water. Water treatment
and optimization of filter media are ways to reduce pollutants dissolved in water. The purpose of this study was to determine
the survival rate and growth rate of tilapia (Oreochromis niloticus) reared in a recirculation system with different filter media.
There were 3 (three) filter media treatments in wastewater treatment with recirculation systems, namely P0 filter media
without pakcoy plants, P1 filter media with pakcoy plants and P2 filter media with pakcoy plants and additional pumice.
Evaluation of survival and growth of fish using oneway Anova data analysis. The results of the study during the 30-day rearing
period showed that the highest survival value and growth rate of fish were obtained in the treatment of filter media with
pakcoy plants and additional pumice. During the research, treatment P0, P1, and P2 respectively gave fish survival rates of
78.2%, 80.2% and 85.0%, absolute weight gain of 10.12 g, 12.09 g and 15.19 g and the absolute length of 2.46 cm, 3.21 cm
and 4.81 cm. The survival rate of tilapia (O. niloticus) in three different recirculation systems did not show a significant effect
(P > 0.05) but had a significant effect (P < 0.05) on growth. The result of the study showed that tilapias from the recirculating
system with pakcoy plants and additional pumice as filter media provides better growth performance compared to the system
without pakcoy plants and additional pumice via improved water quality throughout the culture.

Efek Pemberian Ekstrak Kulit Kabau (Archidendron jiringoides komariah) Terhadap Konsentrasi Spermatozoa Mencit Jantan yang Diinduksi Timbal (Pb)

Elisa Nurma Riana, Yanti Ariyanti — Sun, 30 Jun 2024 00:00:00 +0000

Infertility is currently an important problem in the world, including in Indonesia. Infertility can occur in men and women. In
men, factors causing infertility can come from external sources. One environmental factor that can cause infertility is exposure
to heavy metals from the environment. One way to prevent and treat infertility includes consuming natural antioxidants derived
from plants. One plant that has antioxidant compounds and has antioxidant activity is the kabau plant. This research was
conducted to test the effect of kabau seed pod extract (Archidendron jiringoides Komariah) on male mice exposed to Pb metal
to determine its effect on the concentration of spermatozoa in male mice. The methods used in this research include:
preparation of test animals, making simplicia and kabau seed pod extract, exposing the extract to test animals, isolating
organs, and making spermatozoa suspensions. Giving kabau seed pod extract to mice that had previously been exposed to
lead (Pb) increased the concentration of mice spermatozoa with the most effective dose of kabau bark extract, namely 190
mg/kg BW. However, statistical analysis shows that the increase is not significant.