“…In selecting tasks, we consulted a wide range of empirical research on early mathematics learning and assessment (in particular, Clements & Sarama, 2007;Doig, 2005;Howell & Kemp, 2005;Wright, 1994). Several key processes were identified: subitising, unitising, partitioning, repetition, spatial structuring, multiplicative and proportional relationships, and transformation.…”