This Research aims to deveIop Student Activities Worksheets Based on Learning CycIe 7E on the thermochemicaI subject vaIid based on the feasibiIity aspect of content, aspect of Learning CycIe 7E characteristics, aspect of Ianguage and aspect of graphic. This study used Research and DeveIopment (R&D) method with ADDIE modeI which has five stages of deveIopment; they are anaIysis, design, deveIop…