Spring Sudoku 16x16 Medium — Advanced Logic, Critical Thinking & Problem-Solving for Upper Elementary Students. Take your students’ thinking skills to the next level with these engaging Spring Sudoku 16x16 Medium puzzles! This 20-page printable pack is designed for learners who are ready for a greater challenge and want to strengthen their logical reasoning, problem-solving, and strategic thinking using large Sudoku grids. Each worksheet features medium-level 16x16 Sudoku puzzles, encouragin