Limitations
fatigue
The six-month experiment could potentially reduce academic motivation and involvement in the critical thinking post-test. The relatively small number of participants in the groups limits the research reliability. The frequency of lessons conducted once a week was determined by the curriculum of Tangshan Normal University, which could create preconditions for fatigue in the experimental group, which simultaneously learnt two disciplines.The CNSPFS standard is not intended for students but for schools up to grade 12. At the same time, none of the respondents received auxiliary points as encouragement [