Katherin Cartwright is a passionate mathematics educator and is currently a sessional lecturer and tutorĀ at The University of Sydney teaching mathematics to pre-service teachers in primary education. She has just completed her PhD researching teacher noticing of mathematical fluency in primary students.

Estimating arrays

A few weeks ago I shared a tweet about arrays after discovering a great website (sineofthetimes.org) by Daniel Scher (@dpscher). I really appreciated the dynamic application he had created using Web Sketchpad to make and explore arrays. It’s quite simple in its design but I think that’s the beauty of it – no additional distractions…