Many researchers have stressed the embodied nature of mathematical understanding. Here we explore how knowledge may evolve as students learn a basic calculus concept: rate change. We examined undergraduate with different levels working in pairs to model change an everyday phenomenon. Our findings revealed substantial differences between advanced and introductory they represented their speech ge...

This paper attempts to forecast exchange rates by applying a machine learning approach. More specifically, in this study, we attempt the dynamic evolutions of four Canadian dollars, Australian Great Britain pounds, and euros, which are all against US dollar, using random forest methodology. Evaluating effectiveness, find that predictive performance approach rate forecasting is rather high.

Abstact.This research is aimed at knowing the validity of learning media in reaction rate matter. The type method that used ADDIE (Analysis, Design, Development, Implementation and Evaluation) but this limited to Development step. validation test was conducted by a chemistry lecturer from Unesa filled questionnare. can be scored construct content validity. Based on result, score average 4.39 wh...