Press the right arrow to move the character one number to the right. Press the left arrow to move the character to the left. To figure a negative number problem: Always start at 0. Move to the right one time for each positive number. Move to the left one time for each negative number. For example: -3 + 4 = ? Move 3 to the left, 4 to the right. Where are you? Over 1. So 1 is the correct answer.
Just a quick (fix?) to Julie Collins great project. Enjoy.