You have two options:
Continue through the Summer
Like playing piano or running, to maintain fluency you must practice. It will be faster and easier to continue math through the summer. However, to develop fluency, the student must work on math a minimum of 4 days for an hour to an hour and a half per day.
Take a Summer Break
While some fluency will be lost, it can be regained by retaking the most recent Practice Sets. If a two month break is taken, repeat the last 10 lessons. If 3 months, repeat the last 15 Practice Sets.
Important: Retaking the Practice Set
Since the student has already taken these Practice Sets once, and can see the answers, you may want to have the student solve all the questions in the Practice Set on paper using the textbook (PDF is posted on the Course Home page) then enter their answers in the eLearning system. Don't forget to follow all the steps in the Practice Set Instruction Sheet!