The Booklist below will allow you many opportunities to learn more about The Rainforest. These books along with the resources below would make a wonderful Rainforest Unit Study for your K-1 students.
This Rainforest Unit Study Resources pack is free and includes resources for Bible, Math and Language Arts. This Rainforest Pinterest Board has many more ideas to add to your study of the Rainforest. Choose a variety of projects and create a hands-on unit with Bible, reading, writing, math, geography and science!
(affiliate links to Amazon in the US and Canada are included)
The Great Kapok Tree by Lynne Cherry
The Great Kapok Tree: A Tale of the Amazon Rain Forest (for the US)
The Great Kapok Tree: A Tale of the Amazon Rain Forest (for Canada)
If I Ran the Rainforest by Bonnie Worth
If I Ran the Rain Forest: All About Tropical Rain Forests (Cat in the Hat’s Learning Library) (for the US) If I Ran the Rainforest (for Canada)