With the guidance of the competency-based training of engineering education accreditation

a set of innovative and comprehensive experiments

which was named the fabrication of poly (lactic acid)/ferriferous oxide (PLA/Fe

3

O

4

)nanocomposites and its microwave-assisted foaming ability

were proposed. On the bases of students' understanding of the topic

consulting the literature and preparing the essential principles

the optimized experimental routes were drawn properly. The PLA/Fe

3

O

4

nanocomposites characterized by uniform dispersed particles and well-bonded interfaces were fabricated successfully

and then investigations on interface structure

molecular weight as well as microwave-assisted foamability of the composites were carried out. To promote the subjective activity of students participating in the experimental courses

a novel evaluation system

which is combined by process management and result assessment and concerning every step of the whole experiments

has been established. On the other hand

the proper corrective actions could also be made according to feedback from the students

finally improving the qualities of experimental teaching and achieving the expected training targets.