Thirty-seven third graders and thirty-two first graders engaged in solving a tangram puzzle in the shape of a fox. They had five minutes to solve the puzzle, and after this time, they received guidance on the particular piece they had difficulties with. Through the lenses of navigating flexible abstraction, reinterpretation, combinations, and…

Sudoku is an intelligence game that has fascinated many people. In addition to offering entertainment, it also attracts players to solve more challenging Sudoku questions. Sudoku novices tend to fail to focus on understanding the operation rules because the grid, words, and numbers of Sudoku are too complicated. The main purpose of this study is…