Online lesson design principles help teachers and curriculum developers imagine new possibilities for classrooms.
Christopher Danielson, firstname.lastname@example.org,@Triangle mancsd on Twitter®, is a teaching faculty member at Desmos. He is interested in the relationship between informal mathematical thinking and school math, which he blogs about at Talking Math with Your Kids.
Dan Meyer, email@example.com, is the chief academic officer at Desmos, where he studies how students learn mathematics with computers. He speaks internationally on issues in mathematics education.