Unit 1. CHARACTETISTICS OF LIVING THINGS
A. Characteristics of living things
B. Living things have needs.
C. Desert habitats
D. Swamp habitats
E. Water habitats
F. Seashore habitats

Unit 2. A PLANET CALLED EARTH
A. A planet called Earth
B. Earth is made of layers
C. Volcanoes
D. What happens after a volcano erupts?

Unit 3. ANIMALS WITH BACKBONES ARE CALLED VERTEBRATES
A. Animals with backbones are called vertebrates.
B. Mammals are vertebrates.
C. Birds, fish, reptiles, amphibians, and mammals are all vertebrates

Unit 4. BIRDS ARE BEAUTIFUL
A. Birds are beautiful!
B. Penguins
C. Emperor penguins
D. Ostriches
E. Hummingbirds

Unit 5. HEALTHY HABITS
A. Food makes my body strong.
B. Bread, cereal, rice, and pasta group
C. Fruit group
E. Milk, yogurt, and cheese group
F. Meat, poultry, fish, dried beans, eggs, and nuts group
G. Fats,oils, and sweets group
H. Good healthy habits

Unit 6. DINOSAURS
A. What are fossils
B. What do fossil bones and teeth tell us?
C. Where dinosaurs warm or cold-blooded?
D. Flying Pteranodon
E. Why did dinosaurs become extinct?