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Nancy Riana

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Open access Sep 2026

Strengthening Logical Thinking in Children Aged 5-6 Years Through BUMIKA Geometry: A Classroom Action Research Study

Logical thinking in early childhood underpins children’s ability to compare quantities, organize sequences, classify objects, and reason about number. This study examined the development of logical-thinking skills in children aged 5–6 years through BUMIKA Geometry, a manipulative learning medium that integrates countin...

Dienta Gustria Rani Darsono Dienta, Feronica Eka Putri, Nancy Riana · 0 citations

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