This paper discusses four thematic units that teachers can use with preschool and primary grades, along with examples of activities that can be integrated into each unit. The units include "Land of Many Colors," based upon a book of the same name that tells the story of gingerbread-shaped characters who learn to accept each other even though they are different colors. The next unit, "Seasons," is developed around a collection of children's literature that focuses on seasonal themes. The third unit, "Habitats," focuses on animal habitats and children's books that explore the issue. "Dinosaurs," the fourth unit, uses books on dinosaurs and various activities to explore the world of dinosaurs. Specific science, math, social studies, and art activities for each unit are presented. (Contains 29 references.) (MDM)