The invention relates to the technical field of teaching evaluation, in particular to a preschool education practical teaching evaluation device and method, and the method comprises the steps: collecting a classroom thermodynamic diagram and sound
source data through the synchronous starting of an
infrared camera and a
microphone array, carrying out the non-uniformity correction of the thermodynamic diagram, carrying out the
noise reduction of the sound
source data, and eliminating the environment interference; performing threshold segmentation on the thermodynamic diagram to generate a binary
focus area, calculating geometric features of the area, and filtering sound source positioning data to generate a teacher movement track; pre-storing an ideal
overlap ratio growth curve of each teaching stage, and dynamically adjusting a scoring
weight coefficient according to the deviation amplitude of the real-time change rate and the ideal curve; and displaying a three-dimensional superposition view of the thermodynamic diagram, the teacher track and the
coincidence degree change curve in real time, and generating a teaching efficiency scoring report. A thermodynamic diagram is generated in real time through the
infrared thermal imaging camera, the
sight focus of an infant is quantified through temperature distribution, and high-precision positioning of a
voice source of a teacher is achieved through the
microphone array.