2 1 day is enough! ! Seriously, if you practice hard, you won't need 10 days to improve. You should also practice at home and school. You can't give up Don't underestimate 30 points! ! I recommend not to report for the long jump, because there is also a basketball dribble. I recommend you to dribble and play basketball. You walk every day and practice according to the skills the teacher said, which will ensure that you can improve by about 6 points. Come on, don't give up, stick to it. Believe in yourself, you can do it, come on! !