Answer:
keyword method
Step-by-step explanation:
As the head of the language department, I would suggest the new Chinese teacher to use the "keyword method" of teaching the students to help them learn the vocabulary and remember them more easily.
The keyword method is a technique where the students are provided with images and rhythms of a particular vocabulary which help them remember and learn them easily. The students can relate and understand them properly. It helps them to memorize them easily relating the images or rhythms.
Thus the answer is "keyword method"