In the Junior Super Star Golf Program the tasks revolve around different sizes of circles.
To make this easier than carrying actual physical circles in specific dimensions with you that do not fit in the golf bag, I suggest poker chips placed like those in the below picture. They are visible and the distances can vary easily. PLUS they fit easily in a golf bag. Neon Red/Orange is for the Red Book 6 ft diameter. Neon Green is for the green Book, 4 ft diameter and the white/Blue are for the Blue Book 3 ft diameter. These chips can be used for chipping targets too. Available for purchase with Junior Super Star Golf program at $15/Dozen. To order the neon chips from Junior Super Star Golf contact 1-800-558-0631.