What is the role of fraction magnitude knowledge in learning fraction addition? An experiment with 71 6th and 7 grade students compared fraction addition instruction and practice with a magnitude representation to a tightly controlled nonmagnitude condition. In the magnitude condition, students with better fraction magnitude estimation skills benefitted more from the conceptual instruction and ...

Magnitude estimation is a psychophysical scaling technique where the intensity of a stimulus is rated by the assignment of a number. We report on a preliminary investigation on using magnitude estimation for gathering document relevance judgements, as commonly used in test collectionbased evaluation of information retrieval systems. Unlike classical binary or ordinal relevance scales, magnitude...

In this study, we propose a reliable data-driven tool, MagInfoNet, to enhance the accuracy of magnitude estimation. Its architecture was assembled using Pre-Inform and Mag-Pred modules replace update key functions traditional seismic analysis workflows. The module with residual network used for data pretreatment by combining intrinsic characteristics signals potential features arrival travel ti...