PreK-K Fall/Autumn themed Math. 39 pages of fun, colorful activities and worksheets. Activities Cover all Mathematics Colorado Academic Standards for Preschool. *Activities also cover some of the Common Core standards for Kindergarten.Basic Geometry/Shapes (triangles, squares, circles, rectangles, pentagons and stars)Number RecognitionPatterns & SortingCounting up to 26Adding (addition)/find the sum up to 20Subtracting (subtraction)/find the difference up to 10Greater than & Less thanWo