The Wild Kratts explore how being really big can be an awesome creature power in this Step into Reading, Step 2 leveled reader Perfect for young readers ages 3 to 6 Chris and Martin Kratt the Wild Kratts explore the worlds of big elephants, big whales, and big wolf packs and more Fans of the Wild Kratts Tv series will learn how animals use their size as an awesome creature power to survive in different environments. Children ages 4 to 6 year-old fans will love this information-packed Step 2 Step into Reading level reader that also helps them learn to read. Step 2 readers use basic vocabulary and short sentences to tell simple stories. For children who recognize familiar words and can sound out new words with help.