LS.4.1.1
Use models to explain that plants and animals have external structures that function to support survival.
Use models to explain that plants and animals have external structures that function to support survival.
District Recommended Resources for 4th Grade Science
Step 1: Lesson Standards & Learning Goals
Dimension 1:
SEP: Develop and Use Models:
Use a model to test cause and effect relationships or interactions concerning the functioning of a natural system (NSTA SEP Matrix).
Dimension 2:
CCC: Structure and Function
Dimension 3:
Dimension 3: Disciplinary Core Ideas:
LS1.A. Plants and animals have both internal and external structures that serve various functions in growth, survival, behavior and reproduction (A Framework for K-12 Science Education).
What are the external structures of plants and animals?
How do the external structures aid an organism in survival?
How do internal and external structures support the survival, growth, behavior, and reproduction of plants and animals?
How do the parts of an animal or plant work together for survival? (e.g., rodents- squirrels, beavers, etc.) have teeth that are continually growing because eating their foods wears them down (e.g., nuts, chewing wood, etc.); gray foxes can climb trees to escape predators; the pitcher plant has vibrant colors and a pleasant scent to attract insects which it digests)
adaptation/adapted
external
function
growth
predators
structures
survival
Explain - Constructing a cause-and-effect model of a system
Identify and describe the functions of external structures. (e.g., structures could include thorns, stems, roots, colored petals, pollen, claws, horns, fur) on selected plants and animals.
Make a claim about the external structures that aid in survival of organisms (e.g., Plants- thorns for protection; roots to anchor the plant and obtain water to support growth; waxy coating to prevent water loss from plants; methods of seed dispersal- water, wind, relying on other organisms; Animals- sharp horns for defense; thick fur or blubber in Arctic/Antarctic areas for warmth; long claws for digging or climbing).
Make a supported claim that plants and animals have structures that work together as a part of a system for survival (e.g., adaptations).
Adaptations are special features or behaviors that help plants and animals survive in their specific environments. For example, a cactus has thick, waxy skin to reduce water loss in dry environments, while a fish has gills to extract oxygen from water. Giraffes have long necks to reach the leaves in the tops of trees.
Step 2: Assessment
Writing Prompts
Imagine you are a scientist discovering a new animal species. Describe the external structures of your animal and explain how each structure helps it survive in its environment.
Imagine you are creating a new plant that can survive in an extreme environment (such as a desert or underwater). Describe the external structures of your plant and explain how each one helps it thrive in that environment.
Choose a plant and write about its external structures, such as leaves, stems, roots, and flowers. Explain how each structure helps the plant survive, grow, and reproduce. (Ex. Venus Fly Trap)
Write a story about two animals living in different environments. Describe the external structures of each animal and explain how these structures help them survive in their specific habitats. (Ex. Polar Bears and Black Bears)
Mini Projects and Investigations
Plant and Animal Adaptation Research
Assign each student or group a specific plant or animal to research.
Have them create a poster or digital presentation detailing their organism’s adaptations and how they help it survive.
Students present their findings to the class, fostering a discussion on the diversity of adaptations in nature.
Predators & Prey
Choose three students to be predators while the rest are the prey. The predators should close their eyes while the prey find a place to hide. Once the prey have hidden, the predators may open their eyes and take 3 steps in any direction. The predators will call out the names of the students they can see. Students whose names are called have been "eaten" and did not survive. The students who were not seen survived the attack from the predators. Discuss why some of the prey survived and some did not. Reflect on what behaviors and characteristics can help animals survive.
Culminating Activity
Objective: Create a diorama showcasing a specific habitat and the adaptations of plants and animals within that habitat.
Materials: Shoe boxes, construction paper, clay, markers, glue, natural materials (e.g., sticks, leaves).
Instructions:
Have students choose a habitat (e.g., desert, rainforest, ocean).
Research the plants and animals that live in that habitat and their adaptations.
Create a diorama in a shoebox, including at least two plants and two animals with their adaptations.
Write a brief description of each organism and its adaptations to display with the diorama.
North Carolina Animals:
Choose an animal from one of the regions in North Carolina. Research the animal and its habitat to describe its adaptations, habitat or surrounding environment, and how they relate to its ability to survive.
Step 3: Lesson Instructions
Think - Pair - Share
What do you do to keep warm in the winter?
How do you think animals keep warm in the winter?
Two Truths and a Lie
Snow Leopard information can be found at the World Wildlife Foundation.
Read Aloud
Additional Literacy Connections
Are Animal Inventors (CommonLit)
How do Arctic Animals Survive in the Cold? (Wonderopolis)
Ant-tastic Teamwork (CommonLit)
What Do You Do with a Tail Like This?" by Steve Jenkins and Robin Page
epic!
Livebinder Resource (Note: This is an old resource and some of the links no longer work. However, there are some good resource links still available through this Livebinder.)