By Adam Boxer A well-crafted explanation lies at the heart of any effective science lesson. A good explanation must take into account a number of factors, but perhaps of foremost importance is the cognitive load placed upon the students. Decades of lab-based research in the cognitive sciences has taught us that students’ working memories are preciously limited. Labelled by Dylan Wiliam as “the single most … Continue reading Teacher explanations, a ‘Live Drawing’ Approach