On Thursday the 3rd of July 2014, the Student Development Activities Department invited the “Thailand Crossword, Game A-Math, Kumkom, and Sudoku Association” to conduct an activity for our junior high school students in order to show them how to do competitive crosswords. The activity was led by Mr. Pawadol Sayawech and his team.They talked about the rules, procedures, and technical aspects of the game. The reason for this activity was to promote the development of thinking skills consistent with the teaching of English and Mathematics, and the event was held in the 9th floor Auditorium of the Assumption 2003 Building.