实物教学    object lesson; object teaching

观察法    observation method[/size]

口算    oral arithmetic

口述作文    oral composition

口语表达    oral expression

口授    oral instruction; oral teaching; verbal instruction

朗诵    oral reading

口头报告法    oral report method

团体游戏    organized play

新生训练    orientation course

户外运动    out-door sport

户外作业    out-door study; out-door work