Building Thinking Classrooms (Liljedahl, 2021) provides teachers with a new method of designing and sequencing tasks called "thin slicing," which emerged from variation theory. The results of the present study indicate that an analysis of the dimensions and ranges of variation within such a task offers insights into learning…

This study was designed to examine the use of mistakes to promote students' performance in undergraduate Algebra classes by developing a growth mindset. Participants were seventy-four students from three Algebra classes and received one of the three interventions along with regular instruction: (a) growth mindset feedback on mistakes…

When people address early mathematics education, commonly they write or reference policies, standards, "scope and sequences" and curriculum, or documents on instructional strategies. These are important; however, we believe that the core consideration should be the nature of mathematics and the development of mathematics "in…

There is a strong link between citizens' quantitative literacy abilities and their financial prosperity. This study applied a social justice perspective to describe families' personal flourishing within the context of numerical, mathematical, and financial literacy (NMFL) education. Four families participated in a weekly community program with…