Observe the child and adult sharing books.
Ask the child to find similar books. For example, “Do you have more books with ducks?”
The child finds books with the same characters or subjects, demonstrating knowledge of similarities.
Early childhood educators and parents should read many books to the child. As the books are read, the adult can help the child see relationships by talking about how some of the books are alike. For instance, “This book is about the pig named Olivia, like your other Olivia book.” Or “This book has a cow in it like this book, but this cow is black and white and this one is brown and white.” Comparisons like this help the child generalize concepts and differentiate similarities and differences.
 North Carolina Department of Public Instruction, 2015
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