Skip Counting by 6 and Can be used as an outdoor activity where students have to jump, leap, hop, skip etc. through hoops laid on the floor. Students/teacher can write in chalk the starting number on the ground.
To add a level of difficulty. I would add number cube to see how many letters to cover up at a time. Use tally marks, dots, numerals ect Free "find the letter" alphabet worksheets! Get them for uppercase, lowercase, and both!