108 Sudoku puzzles arranged on 63 different worksheets. The puzzles progress gradually from easy to more difficult ones, so students can effortlessly acquire the reasoning skills needed to solve these puzzles.Puzzles make fun no prep activities for early finishers, bell ringers, morning work, handouts, homework, unit or lesson plan supplements, sponge activities, introductions to new topics, classroom themes, and sub files.The Sudoku come in three different sizes: 36 four by four grids arranged