Mississippi Science L.2.1.4
The Standard
- L.2.1
- Students will demonstrate an understanding of the classification of animals based on physical characteristics.
Construct a scientific argument for classifying vertebrates that have unusual characteristics, such as bats, penguins, snakes, salamanders, dolphins, and duck-billed platypuses (i.e., bats have wings, yet they are mammals).
2026 Mississippi College- and Career-Readiness Standards for Science · Hierarchical Organization
Teacher's field guide
What This Standard Means
What Students Need to Do
- Students sort animals into groups using clues such as fur, feathers, scales, and how they feed their young. They explain why an unusual animal belongs in a group even when one trait seems misleading.
What Mastery Looks Like
- A student identifies a bat as a mammal because it has fur and feeds its young milk, even though it flies. They identify a penguin as a bird because it has feathers, even though it cannot fly.
Common Misconceptions
- Students may call bats birds because they fly or dolphins fish because they swim. They may think a platypus cannot be a mammal because it lays eggs.
How to Assess It
- Ask: “A bat flies, has fur, and feeds its babies milk. Is it a bird or a mammal? Give two clues that support your answer.”
Lesson moves
Ways to Teach It
Give pairs animal picture cards and feature strips; have them sort bats, penguins, and dolphins beside familiar birds, mammals, and fish.
Show a platypus photo and ask: “It lays eggs but has fur and makes milk. Which group fits best, and why?”
Play Mystery Animal with clues for a snake, salamander, and dolphin; partners name each group and explain their choice.
Give students a penguin zoo fact sheet; have them circle clues that show it is a bird despite not flying.
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Printable L.2.1.4 Worksheet
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Related Standards
- MAQ.7.1
Characterize aquatic representatives of the following taxa: Hemichordata, Urochordata, Cephalochordata, and Vertebrata (including Agnatha, Chondrichthyes, Ostei...
- L.2.1.2
Classify vertebrates (mammals, fish, birds, amphibians, and reptiles) based on their physical characteristics.
- L.2.1.3
Compare and contrast physical characteristics that distinguish between classes of vertebrates (i.e., reptiles compared to amphibians).
- ZOO.9
Students will understand the structure and function of phylum Chordata, class Aves, and how they demonstrate the characteristics of living things.
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