Login to Khan Academy and complete your next grade's unit during your summer vacation to participate in a pizza and movie party. To explain further, if you are starting 3rd grade in September and you finish the third grade unit in Khan Academy by the first day of school, you will automatically win. The contest is open to all grades (1-5). To use Khan Academy, click on the STUDENTS tab on the top of this page, scroll down and click on Khan Academy. On the top right of the khan academy website, click on Sign In/Sign Up and then click on the red google button. enter your @ps189m.net account and password, select your grade and begin. Winners will be announced to the entire school on the first week of school. Good luck!!!