Penelitian ini bertujuan untuk mengetahui persentase miskonsepsi siswa pada materi tekanan zat. Penelitian ini menggunakan metode penelitian gabungan dengan desain penelitian Explanatory Sequential Design dan dilaksanakan di UPTD SMPN 2 Bangkalan. Sampel penelitian yaitu kelas VIII G menggunakan teknik Purposive Sampling. Instrumen yang digunakan adalah soal tes berupa Four Tier Diagnostic Test dan wawancara. Hasil penelitian ini menunjukkan bahwa 27% siswa mengalami miskonsepsi pada meteri tekanan zat, 30% siswa paham konsep, 30% siswa tidak paham konsep dan 13% siswa mengalami Error. Kata Kunci: Four Tier Diagnostic Test, Miskonsepsi, Tekanan Zat

This study aims to know the percentage of students misconceptions of pressure materials. This study used a combined research method with Explanatory Sequential design and was carried out at UPTD SMPN 2 Bangkalan. The sample of the research used purposive sampling technique. The instrument used was a test item in the form of a Four Tier Diagnostic Test and interview. The result of the study showed that 27% of students experience misconceptions on substance pressure material, 30% of students understand the concept, 30% of student don’t understand the concept and 13% of student encountered an error. Keywords: Four Tier Diagnostic Test, Misconceptoins, Pressure Materials

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