Trace and find the uppercase letter O. 1. Tap the button to start. 2. Tap the button, and pick a color. Then, trace the black O in the center of the page at least 3 times. Say the name of the letter and it's sound each time you rainbow write the letter. 3. Circle any uppercase O's you see around the middle letter. Say its sound each time you find a matching letter. 4. Tap to submit your work.