The Visual Representation Of Middle School Students' Cognitive Effects Under Impact Study

With continuous research and development of multimedia learning, Gradually formed a cognitive theory as a guide, the status of variety multimedia learning principles complement。In this study, it based on the assumes of multimedia learning active processing,, in the principle of multimedia principle, the form of principle, the principle of consistency and support of the cognitive load theory, Experiments demonstrated the cognitive characteristics of the junior high school students in a multimedia environment。The experiment consists of three experiments, it generally content expressed as follows:The first experiment main test variables—the affect of color to multimedia。The study used experimental material and methods which commonly used in multimedia laboratory tests, the experiment composed of the material such as designed thunder principle(no text label), hydraulic brake works(the key text highlighted in red), eclipse forming principle(color), lightning fonnation(gray), the earthquakes principle(dynamic color), the pump works(dynamic grayscale)。It examine cognitive processing level of53junior high school grade by the level of self-awareness, recognition, reasoning。The experimental results show that the different affect of multimedia presentation learning to students under the same time limit, the affect is very obvious except the static image。Multimedia material with color in terms of recognition and reasoning have a stronger impact, Compare to static images and dynamic picture material, text material on the subjects’self-perception evaluation is poor。The second experiment main test variables—the affect of auxiliary text to multimedia。The experiment base on Mayer’s research by auxiliary text, it takes appropriate changes to multimedia experimental materials and designs the comparative experiment of the difficulty in both cases。The experiments design for the material as the principle of eclipse formation, the principle of pilot lightning formation, pump working principle, earthquakes principle。It examine cognitive processing level of60junior high school grade by the level of self-awareness, recognition, reasoning。In the difficulty both cases, the auxiliary text has little effect on student’s self-cognitive abilities, it has been significantly improved on the cognitive test and at some extent reasoning rest has also been improved。In this process, the role of the difficulty of presentation effects are significant。The experiment three is based on the conclusions of the first two experiments, it test the colored dynamic text with the color of the text, colored with a secondary text and static pictures, with colored motion pictures of supporting text respectively(The requirements of static image on the color is not very high, so in this research will test by a color picture)。The experimental test of three types of material show that dynamic picture with a secondary text has more significant impact than the other material on the subjects’level of self-perception and reasoning level, the text materials on the recognition results were more pronounced effect。...