The problem of this research is motivated by the lack of students' ability in learning to write descriptions. Therefore the purpose of this research is to produce a syllabus for writing a description based on a valid, practical and effective media picture and picture. The model used in this study is the ADDIE model. The subjects in this study were students and teachers of SDN 01 Simabur. Validity data was taken from the learning syllabus validation sheet. Practicality data can be seen from the observation sheet of the implementation of the lesson plan, as well as the questionnaire of teacher and student opinions. The effectiveness data is seen from the results of students' writing learning. The results of the validity test by experts and practitioners are categorized as very valid namely 90% and 87%. The practicality of the syllabus is categorized as very practical, evidenced by observing the implementation of the RPP with a percentage of 89%, and supported by teacher and student responses of 90% and 91%. Finally, the effectiveness felt by students in writing descriptions is categorized to be very effective, which can improve students' ability to write descriptions. In short, that the development of syllabus writing description based on picture and picture media in grade IV elementary school can be declared valid, practical, and effective.
Variational formulation of the problems of mechanics and its matrix analogy
