One voice sees a duck in the outline and the other sees a rabbit, and the book never says who is right. A new ambiguous shape at the end starts another pair of guesses.
Eva and her mother treat not knowing as a place to start. They talk about gravity and how many grains of sand there are, and the book separates real mysteries from questions too big to count.
The book shows scientists changing their minds as new fossils and tracks turn up, and it leaves room for future discoveries to change today’s ideas about dinosaurs. A parent reviewer notes that some details have been revised since it was written.
We start with parent and educator recommendations, check available story details, and explain the value fit in our own words. The source link on each book shows where we found it.