Best Evidence Science Teaching (BEST) is a large online collection of resources developed for effective teaching of difficult ideas in science, currently for use in secondary schools. The unique selling point of BEST is that it enables teachers to draw on the best research evidence when teaching a wide range of topics in the science curriculum. The comprehensive suite of resources is intended to help students to make progress in understanding key concepts in science education and support teachers in developing evidence-based practice. In October 2019, the Centre for Industry Education Collaboration (CIEC) carried out a feasibility study to analyse the potential reach of the 'BEST approach' to support science teaching and learning in the primary school. A full scrutiny of existing BEST resources explored whether the structure of BEST lends itself to the primary age range. In this article, the author explains the BEST approach to teaching and assessing science, with details of how this is being piloted successfully in primary schools.