The Circus Problem - The Circus. When Peg and Cat find themselves in the center ring, they climb, swing, swoop and juggle their way over amazing heights and lengths. Primary Content: Measuring height, measuring length; Secondary Content: Counting by twos.The Buried Treasure Problem - Pirate Island. Peg and Cat measure their way to buried treasure using Cat as a measuring stick! Primary Content: Non-standard units of measurement; Secondary Content: Mapping.