Fostering Young Children’s Spatial Structuring Ability
Fenna van Nes, Michiel Doorman
https://doi.org/10.29333/iejme/259
International Electronic Journal of Mathematics Education, Volume 6, Issue 1, pp. 27-39

Teaching Number Sense for 6th Graders in Taiwan
Der-Ching Yang, Chun-Jen Hsu
https://doi.org/10.29333/iejme/232
International Electronic Journal of Mathematics Education, Volume 4, Issue 2, pp. 92-109

Development of a Computerized Number Sense Scale for 3-rd Graders: Reliability and Validity Analysis
Der-Ching Yang, Mao-neng Fred Li, Wei-Jin Li
https://doi.org/10.29333/iejme/222
International Electronic Journal of Mathematics Education, Volume 3, Issue 2, pp. 110-124