20 pages of Sudoku to teach your students to use logic and reasoning. Instead of missing numbers, your students will find geometric shapes: triangle, circle, oval, square, rectangle, rhombus, trapezoid, pentagon, hexagon, octagon, sphere, cube, pyramid, rectangular prism, triangular prism, cone, cylinder, star, heart and cross. Each page comes with directions. I’ve included an answer key for all 80 problems. If you are interested in reinforcing geometrical knowledge while developing critica