ICMScE is one of the best conferences held by Universitas Pendidikan Indonesia. This year, ICMScE raised the theme of STEM and ESD to Promote Smart and Sustain Society. This theme is considered to be able to represent the needs of mathematics and science education in the present and future to meet a smart and sustainable society. This conference presents the keynote speakers who are experienced in their fields, so that they can contribute the latest scientific knowledge to the conference participants. Due to growing concerns about COVID-19, ICMScE 2020 will cancel its physical conference this year, instead of shifting to a fully virtual conference. The ICMScE participants came from various universities in Indonesia and Abroad, therefore it became an opportunity for each participant to share knowledge, exchange ideas, and have the opportunity to collaborate.