[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 10

Primary school teachers’ cognition of different teacher training standards (s) preschool teachers’ standards; (u) technical school teachers’ standards; (v) professional teachers’ standards; (o) teachers’ training standards; (r) primary school teachers’ training strategies; (t) teaching effect guarantee mechanism.