- គណិតវិទ្យា
- (ប៉ាន់ស្មានផលដកនិងទំនាក់ទំនងរវាងវិធីបូកនិងវិធីដក)
- Age 9-10
-
level: ថ្នាក់ទី៣
- Khmer
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