<![CDATA[Abstract : Developmental research already been done by the title “Development of Student Work Sheet Science basis on PhET ”Optical Geometri” T heme eye.”. This research intent to describe work sheet student feasibility gets basis PhET “Optical is Geometry” theme eye to be sighte d bases material component criterion, representation, and language; feasibility is sighted from student response. This research points on developmental model 4D but then just come up develop (development). Anal yze of the research was done by descriptive q uantitative, one that points out that Student Work Sheet gets basis PhET was reasonable being utilized deep learning is sighted of all aspect covers material with percentage as big as 88.88%, representation as big as 88.88%, and language as big as 85.00%. Besides feasibility also being sighted of student response that cover representation feasibility in learning as big as 93.42%, Representation criterion of Student Work Sheet as big as 80.26%, and language as big as 75.43% . Learned thoroughness individua lly with percenta s e as big as 100% complete with up to KKM as big as ≥ 70 and klasi c al with percentase 100% complete as supporting as feasibiliti]]>
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