This book is great for animal lovers. It gives a clear, simple definition of patterns and shows examples of patterns we see in real life. It can be used to introduce patterns. It also encourages students to look for patterns around them.
Animal Patterns (Finding Patterns) by Nathan Olson
The use of vocabulary building. Main idea topic sentences and facts in a first grade class for a science additional curriculum is a great idea for a sub lesson. This book has simple concepts and the accompanied work sheet help students focus on scientific concepts.