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All Journal Indonesian Journal of Educational Review (IJER) Indonesia Chimica Acta
Daniel Daniel
Mulawarman University
Chemical Engineering, Chemistry & Bioengineering Education

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A REQUIREMENTS ANALYSIS OF PROBLEM UNDERSTANDING OF BIOLOGICAL TEACHERS RELATED TO DEVELOPMENT OF CHARACTER EDUCATION BASED LEARNING Wahyu Wahyu; Vandalita M. Rambitan; Daniel Daniel
IJER - INDONESIAN JOURNAL OF EDUCATIONAL REVIEW Vol 7 No 02 (2020): Indonesian Journal of Educational Review
Publisher : Program Pascasarjana Universitas Negeri Jakarta

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Abstract

This study aims to examine the understanding of biology teachers in class XI Public High School related to the development of character education-based learning tools in the form of syllabus, lesson plans, LKPD, evaluation, and handouts. The research subjects were biology teachers at Public High School 1, Public High School 2, Public High School 3, Public High School 5, Public High School 10 Samarinda. Data collection was carried out by interviewing, distributing questionnaires, observing, documenting. The data obtained were analyzed descriptively and interpretively based on the percentage. Results of the analysis showed understanding relevant biology teacher development role of learning tools based character education It is shown from the results of the analysis to answer questions related to the introduction of character education learning 41.67 percent answered and 58.33 percent did not answer, the application of character education learning 33.33 percent answered and 66.67 percent did not answer, describing the stages of character education learning 16.67 percent answered and 83.33 percent did not answer, the empowerment of character education was 33.33 percent answered and 66, 67 percent did not answer. There are steps taken to improve teacher understanding in applying inquiry learning models by developing valid, practical, effective character education learning tools
Phytochemical Test, Toxicity and Antioxidant Activity Leaves Kerehau (Callicarpa longifolia Lam.) With DPPH Method Erwin Erwin; Redda An Nisa; Daniel Daniel
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 8 No 1 - June 2015
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v8i1.2481

Abstract

Phytochemical analysis, toxicity test by the   brine   shrimp   lethality   test   (BSLT) against Artemia salina L, and antioxidant activity evaluation of the extracts of  Kerehau leaves (Callicarpa longifolia  Lam.)  have  been  carried  out.  The  ethanol  extract  obtained  from  Kerehau  leaves  was concentrated by using a rotary vacuum evaporator. Furthermore, the crude extract was fractionated with n-hexane and ethyl acetate solvent, successively. The phytochemical  analysis of crude extract constitutes alkaloids, phenolics, flavonoids and steroids. n-hexane fraction contains alkaloids, flavonoids and steroids and ethyl acetate fraction contain alkaloids, phenolics and flavonoids. n-Hexane fraction exhibited highest toxic activity with LC50  value 90.05 ppm against Artemia salina L and ethyl acetate fraction has the highest antioxidant activity with IC50 value 38.94 ppm compared with other extracts.
Co-Authors Erwin Erwin Redda An Nisa Vandalita M. Rambitan Wahyu Wahyu