Ulya, A., Utaminingsih, S. and Erik Aditia 2022. The Effectiveness of Tynker and Scratch Application to Improve 4C Skills in Ecosystem Themes in Klumpit Public Elementary School . ANP Journal of Social Science and Humanities . 3, (Aug. 2022), 1-6. DOI:https://doi.org/10.53797/anp.jssh.v3sp2.1.2022.