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"Between-ness"

This is a series of applets drawn from the website mathMINDhabits [sites.google.com/site/mathmindhabits] that is designed for teachers of mathematics who want to deepen their understanding of the mathematics they teach and that their students are expected to learn. 'Between-ness' and ordering are two sides of the same coin. From a pedagogic perspective, 'between-ness' offers an opportunity for us to pose problems to our students that do not have unique correct answers while simultaneously being well-defined and open-ended.
"Between-ness"