Classification of Animals SC.3.L.15.1

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Classification of AnimalsSC.3.L.15.1

• Mary Tweedy
• Curriculum Support Specialist
• Dr. Millard Lightburn
• Elementary Science Supervisor

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Benchmarks

• SC.3.L.15.1 - Classify animals into major groups
  (mammals, birds, reptiles, amphibians, fish,
  arthropods, vertebrates and invertebrates, those
  having live births and those which lay eggs)
  according to their physical characteristics and
  behaviors. (Cognitive Complexity Moderate)
• SC.5.N.2.1 Recognize and explain that science is
  grounded in empirical observations that are
  testable explaining must always be linked with
  evidence. (Cognitive Complexity Moderate)

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Classification

• Do you collect baseball or Pokemon cards?
• How about rocks or CDs?
• If so, you probably organize the items
• to make them easy to find.
• Scientists have a system for keeping track of
  millions of different organisms that live on
  Earth.
• They classify, or organize, the organisms into
  groups based on similar characteristics.

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How do Scientists Classify Animals?

• Write down a list of as many animals as you can
  name in one minute.
• Look over the list. What information about these
  animals might scientists use to classify them?
• What body covering do they have?
• Do they have a backbone?
• How do they breathe?
• In the reading, Classifying Animals, well look
  at how and why animals are classified into
• groups.

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What are the two main groups that scientists
classify all animals into?

• Vertebrates
• Backbone
• Skeletons inside their bodies, help them stand
  and move around
• Examples
• giraffe, people,
• Dog, shark, bird, fish

• Invertebrates
• No backbone
• Some have
• Skeletons onside their body
• Grow shells
• No hard parts in or outside of their body
• Examples
• beetle, snail, worm

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Look at the animals in these pictures.
Shark
Wolf
butterfly
crab
Separate them into two groups based on something
they have in common. How did you group the
animals? Did you sort them by size? Maybe you
sorted them by color or where they live. Lets
find out how a scientist sorts different animals
into groups.
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Exploration Animal Classification

• Vertebrates

• Invertebrates

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More on Vertebrates

• How can vertebrates can be classified into
  groups?
• By
• skin covering
• how they reproduce
• how they maintain body temperature
• characteristics of their limbs (arms and legs,
  or their equivalent such as wings or fins)..

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What are the 5 Groups of Vertebrates?

1. Fish
2. Amphibians
3. Reptiles
4. Mammals
5. Birds

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Fish

• Lives in water
• Have wet scales
• Breathe with gills
• Some lay eggs in water

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Amphibians

• Lives on land and water
• Have moist skin
• Lay jelly coated eggs in water

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Reptiles

• Have dry scales
• Lay leathery shelled eggs
• Cold blooded

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Mammals

• Have hair and produce milk
• Give birth to live offspring (no eggs)
• Warm blooded

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Birds

• Have feathers
• and hollow bones
• Lay hard shelled eggs
• Warm blooded

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What are you wondering now?

• 1. Why is a whale classified as a vertebrate?
• 2. Compare and contrast a frog and a toad .

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Summary of Vertebrates
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CHARACTERISTICS OF THE FIVE TYPES OF VERTEBRATES
  How It Breathes Body Covering Born Alive or Lays Eggs Warm or Cold Blooded Another Distinctive Feature
Amphibians                        
Birds                      
Fish                      
Mammals                      
Reptiles                      
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Venn Diagram
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Compare and Contrast
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Is it True?
Amphibians Reptiles Fish Birds Mammals
Have a backbone
2. Have scales
3. Have smooth skin
4. Breathe with gills
5. Breathe with lungs
6. Have fur or hair
7. Have feathers
Lay eggs with hard shells
9. Feed milk to babies
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More on Invertebrates

• Arthropods are the largest group of invertebrates
• What do they all share in common?
• Jointed legs or limbs
• Hard body covering that forms an outer skeleton
• Examples include centipedes, millipedes, spiders,
  mites, horseshoe crabs, scorpions, crustaceans
  (lobsters) and insects

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Why are animals grouped into different
categories?

• Answer They are grouped into different
  categories because they use different types of
  physical features to carry out the activities
  they need to live.
• For example, birds are grouped together because
  they have wings, feathers, and beaks, while fish
  are grouped together because they have fins,
  scales, and mouths.
• Why are arthropods grouped together?