Derivatives at Several Points: An Important Step between Derivative at a Point and Derivative Function
Flores, Alfinio; Park, Jungeun; Sherman, Milan (2014)
We present activities, with an interactive computer program, that serve to bridge two related but different concepts, derivative at a point and derivative function, and to help students understand better the ...
Fractions as Numbers and Extensions of the Number System: Developing Activities Based on Research
Park, Jungeun; Flores, Alfinio; Hohensee, Charles (2016)
Existing studies have shown fractions present significant challenges for K-8 students and pre-service teachers. They suggest that students may fail to see fractions as numbers and have difficulty moving beyond the part-whole ...