Supporting young students in developing meanings for the set-theoretic function definition is emphasized in 6th-12th grade curricula around the world. In prior work, we have highlighted how covariational reasoning supports college students in constructing relationships that afford considering mathematical properties important for a set-theoretic…

This study investigates the implementation of the learning management model based on cognitive development theory to enhance mathematical problem-solving ability for Prathomsuksa 6 students. The sample group assigned by cluster random sampling was thirty Prathomsuksa 6 students of Chumchon Yot Kaeng Songkhro School. The research instruments…

Incorporating nutrition topics in the primary school curricula should support the acquisition of nutrition knowledge in different ways and indirectly the development of healthy eating habits in children and teenagers. In Slovenia, nutrition education is part of all primary school education levels and may take the form of compulsory and/or elective…