<![CDATA[ABSTACTThe purpose of this research is to produce the Game Snakes and Ladders Chemistry as a variety of exercises to strengthen students concepts on the material Interparticle Interaction and determine the level of validity of the media function. This research was conducted with a Plomp development model consisting of 3 stages, namely: (1)preliminary research, (2) prototype phase and (3) assessment phase. This research is limited to the stage of prototype phase and formative evaluation to the stage of one-to-one testing and expert review. Expert review was conducted by testing the validity by 2 chemistry lecturers and 2 chemistry teachers. Data were collected using a validity questionnaire which was then analyzed using the Aiken's V formula. Based on the results of the research, the Game Snakes and Ladders Chemistry has a valid category with a V value of 0.90 but has not been tested for practicality.Keywords: Chemistry Snakes and Ladders Game, Learning Media, Interparticle Interaction, Plomp Model DevelopmentABSTRAKPenelitian ini bertujuan untuk menghasilkan Permainan Ular Tangga Kimiasebagai variasi latihan untuk memantapkan konsepsiswa pada materi Interaksi Antarpartikel dan menentukan tingkat validitas fungsi media. Penelitian ini dilakukan dengan model pengembangan Plompyang terdiri dari 3 tahap yaitu: (1) penelitian pendahuluan (Preliminary Research), (2) pembentukan prototipe (Prototype phase), (3) penilaian (assessment phase). Penelitian ini dibatasi pada tahap pembentukan prototipe evaluasi formatif sempai tahap one to one dan expert review.Penilaian expert review dilakukan dengan uji validitas oleh 2 orang dosen kimia dan 2 orang guru kimia. Data dikumpulkan dengan menggunakan angket validitas yang kemudian dianalisis dengan formula Aiken’s V. Berdasarkan hasil penelitian Permainan Ular Tangga Kimia ini dikategorikan valid dengan nilai V 0,90 namun belum diuji praktikalitasnya.Kata Kunci: Permainan Ular Tangga Kimia, Media Pembelajaran, Interaksi Antarpartikel, Pengembangan Model Plomp]]>
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