Use sidewalk chalk to draw a number line on the sidewalk. Write “0” at one end and 10,000 at the other end. In between, at appropriate intervals, write 1,000, 2,000, 3,000, etc. through 9,000; the 10,000 is already at the end. An adult or older child shouts a number so that children can run to stand on the correct number. When players are comfortable with exact-number games, call other numbers so that children can stand in the approximate places (between the labeled points). You may need a longer number line to play this advanced-format game so that there is more room to approximate the correct place to stand. Ask children to compare their numbers by creating a new rule: if the number called is larger than the number you stand on now, you should run to the new number. If the number called is smaller, stay where you are. You may change the rule to the reverse (staying where you are for a larger number) if you like.