Tennis courts, shuffleboard courts, basketball courts, platform tennis courts, ball fields, swimming pools, ski slopes, handball courts, volleyball courts, badminton courts, miniature golf courses, slides, frisbee, golf, boating, roller skating, children's play areas including such equipment as swings, slides, teeter totters, jungle gyms and the like, and nonmotorized bike tracks. An instructional camp limited to no more than 100 persons may be operated between the hours of 7:00 p.m. Sunday to 9:00 a.m. Saturday during the months April through November. Any instructional camp limited to no more than 100 persons may be operated at any time during the months December through March.