(1)解一元二次方程式之應用問題_【觀念】國二上4-3_by Live數學_名師葛倫

https://www.youtube.com/watch?v=Zx_5ZsomY1I&list=PL643E9DF36AF86635

(2)解一元二次方程式之應用問題合理性_【觀念】國二上4-3_by Live數學_葛倫

https://www.youtube.com/watch?v=tQ1nUJFkUlI&index=2&list=PL643E9DF36AF86635

國二上_4-3應用問題_by Live數位國中數學_名師【葛倫(Galen)】

https://www.youtube.com/watch?v=dXszz8uBlXc&list=PL643E9DF36AF86635&index=3