The number tracing clip art is used for correct number formation of 0-9. The images use numbers and coloured (colored) circles to show how the letters should be drawn.In numerical order, follow the green dots to the red dots to correctly form each letter.The clip art is in PNG format and all numbers are on a transparent background. This product is also available in a black and white font.https://www.teacherspayteachers.com/Product/Learn-to-Write-Alphabet-Tracing-Letter-Formation-Clip-Art-5718869