This is a little book to help students understand the concept of defining and non-defining attributes of a shape. The text might be somewhat difficult for beginning readers, but it is meant to be read with a teacher. This will allow for discussion and clarification of the concept.
This book is a 16 page reader. Along with discussing the attributes of a shape it uses the analogy of attributes of a dog in order to help clarify students’ understanding of what attributes are.
Here is another resource you might be interested in:
Defining and Non-Defining Attributes of a Shape Packet