Follow the life cycle of an oak tree, butterfly, chicken and frog. From an acorn to becoming a fully-grown oak tree. From the time the egg is laid, through hatching as a caterpillar, to forming a cocoon and emerging as a fully-grown butterfly. From the time the egg is laid, through hatching as a chick to becoming a fully-grown hen. From the time the egg is laid, through it stage as a tadpole to becoming a fully-grown frog. Grade 2. Paperback.