Every teacher knows that when students lower their heads and put their smartphones on their laps again, they reappear the facial expressions they lack when they are mentally absent. Once, it was too colorful for Deam Liptak because the students were always vague and he could not continue to study his material. All warnings were unnecessary, and he decided to intervene without further delay. Liptak bought a cell phone jammer and used it to make the phone unable to communicate. However, the use of cell phone jammers is strictly prohibited in the United States, and Liptak knows this.
Dean Liptak is certainly not the first teacher to come up with a mobile phone jammer to solve the school’s smartphone problem. In addition, Switzerland also prohibits the use of jammers, and any violations will be fined up to 100,000 Swiss francs. Smartphones are also the most exciting topic in Germany, because 80% of 12-13 year olds already have a smartphone and use it in the classroom. It is actually very interesting to consider whether a mobile phone signal jammer legally installed in a school is a reasonable installation, because learning with a smartphone in hand is difficult to achieve.
A study by the London School of Economics now shows what most teachers may already know. Comparing the performance of students who use and not use smartphones, the results are surprising. Compared with the learning behavior of using a smart phone, the learning progress has increased by 6%, and the learning progress of weak students can even be as high as 14%! The researchers left the UK and concluded that the mobile phone ban can effectively fill the education gap at low cost, but as we all know, Germany, a bureaucratic country, can only find a solution unless smartphones are no longer used. Because the method taught in the United States is more effective, even