Cupfianis C, Hidayati A. Validation of Define Stages in the Development Process of STEM-Based E-Modules with Plant Themes in Children Aged 5-6 Years. IJEDS [Internet]. 2022 Jun. 9 [cited 2025 Oct. 22];4(2):95-100. Available from: http://ijeds.ppj.unp.ac.id/index.php/IJEDS/article/view/385