UJI TOKSISITAS EKSTRAK KULIT BATANG RENGAS (Gluta renghas) TERHADAP LARVA UDANG Artemia salina UNTUK PENGEMBANGAN MODUL PEMBELAJARAN PADA KONSEP KESEIMBANGAN LINGKUNGAN KELAS X SMA

Abstract

Abstract: This research was conducted ontoxicity tests of rengas (Gluta
renghas) bark extract to shrimp larvae Artemia salina for the developing of learning
modules on the concept of environmental balance class X Senior High School in July to
September 2015. This research aims to determine the toxicity of rengas (Gluta renghas)
bark extract to shrimp larvae of Artemia salina and produce learning modules on the
concept of environmental balance of class X Senior High School. This research was
carried out by two stages. The first stage is an experimental research using Brine
Shrimp Lethality Test (BSLT) method which consisted of 5 treatments and 3
replications. Parameters measured were the mortality of shrimp larvae Artemia salina.
The data obtained and analyzed by probit analysis using regression equation. The
second stage is the development of research learning modules using ADDIE
development model (Analyze, Design, Development, Implementation and Evaluation)
conducted into 3 stages: Analyze, Design and Development. The research of data
obtained from the development of the learning modules are validated by the validation
sheet 3 validator by using 5 criteria of validity and analyzed descriptively. The results
showed that the extract of bark rengas (Gluta renghas) is toxic to shrimp larvae of
Artemia salina. It can be seen from the LC50 values of 599.79 ppm, while the results of
research on the development of learning modules that are already well developed and
can be used or tested in a study at the school on the concept of environmental balance
of class X Senior High School with a mean result of learning modules by third
assessment validator is valid with an average assessment is 3.79.

Key Words: Toxicity Test, Rengas (Gluta renghas), Artemia salina, Learning Modules