関連ワード:  at what age can a toddler count to 10    at what age can a toddler count    at what age can a child count    at what age can a child count backwards    at what age can a child count objects    at what age should a toddler count    at what age can a child count items    at what age can a toddler count to 20    at what age can a toddler count to 5    at what age can toddlers count objects