Abstract
The aims of this studied include: 1) to describe the validity of instagram-assisted microblogs on cell
 material for class XI Science at MAN 3 Jember; and 2) to describe students responses to instagram-
 assisted microblogs on cell material for class XI Science at man 3 Jember. The typed of researched in this researched was researched and development. The development model used was the ADDIE development model with the stages of Analysis, Design, Development, Implementation, and Evaluation. This development researched was conducted at MAN 3 Jember, the data collection instruments used was interview guides and questionnaire sheets. This studied used 2 material expert validators, 2 media expert validators, 1 linguist validator, and 1 biology teacher. This researched and development concluded: 1) the results of the validation of material expert validators with an average percentage of 95%, media expert validators with an average percentage of 92%, linguistics expert validators with an average percentage of 96% and each obtained very good criteria. valid; 2) the percentage of student responses obtained an average percentage of 89% with very interesting criteria
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