Heather Johnson (@HthrLynnJ) from the University of Colorado at Denver discusses her article, "A link between students' discernment of variation in unidirectional change and their use of quantitative variational reasoning," published in Educational Studies in Mathematics, Volume 97. (Co-author: Evan McClintock)
- Heather's Professional Webpage
- Heather's Academic Blog (and her rethinking time post)
- Article URL: https://link.springer.com/article/10.1007/s10649-017-9799-7
See the comments for references