“Student Pleasure Attitude and Interest in Spending Time Learning Science Against Student Cognitive Learning Outcomes: Analisis Sikap Senang Siswa Dan Minat Meluangkan Waktu Belajar IPA Terhadap Hasil Belajar Kognitif Siswa”. 2018. Indonesian Journal of Education Methods Development 2 (May): 10.21070/ijemd.v2i0.551. https://doi.org/10.21070/ijemd.v2i0.551.