[Retracted] Preservice Training Strategies and Guarantee Mechanisms for Primary and Secondary School Teachers in the Development of Smart Cities by the Internet of Things

<div>Teachers’ understanding of teachers’ professional standards in different subjects (a) Chinese teachers; (b) mathematics teachers; (c) English teachers; (d) music teachers; (e) art teachers; (f) PE teachers.</div>

Security and Communication Networks

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Figure 9

Figure 9: [Retracted] Preservice Training Strategies and Guarantee Mechanisms for Primary and Secondary School Teachers in the Development of Smart Cities by the Internet of Things 

Figure 9 | [Retracted] Preservice Training Strategies and Guarantee Mechanisms for Primary and Secondary School Teachers in the Development of Smart Cities by the Internet of Things 