３課
How to write Japanese & Stroke order

Check also 課  

Names and idioms with total stroke of 15:
公基  大凱  死海  佐太木  秦本  

Names and idioms similar to ３課:
研修課  課税庁  超過課税  従量課金上限制  遡及課税  

Check stroke order for the words below:
安福  愁月  慶女  南実斗  賀央  弦走  爾奴