What is the direct object in Dr. Seuss wrote many classic children books?

The direct object in the sentence "Dr. Seuss wrote many classic children books" is "books".

Here's why:

* Subject: Dr. Seuss (the one performing the action)

* Verb: wrote (the action)

* Direct Object: books (the thing being acted upon)

The sentence is telling us what Dr. Seuss did (wrote) and what he wrote (books).