There is need and opportunity for assessments that support quick and playful--yet also accurate, rigorous and developmentally sensitive--appraisals of early numeracy. Ideally, these should be accessible to those who have opportunity to support children's learning development and ultimately shift children's trajectories. The iPad-based "Early…

Decades of research evidence indicate that high-quality early education can positively affect the learning trajectories of disadvantaged young children. However, despite significant investments to improve what happens in the classroom, publicly funded pre-kindergarten programs continue to display instructional quality that is too weak to prepare…