Animal Classification: Arthropods

Contributor: Samantha Penna. Lesson ID: 11364

Do you like creepy crawly bugs and spiders? Have you eaten crabs, shrimp or lobster? Aren't butterflies pretty? They all have a lot in common, and you will learn about them and make an arthropod page!


Life Science

learning style
personality style
Grade Level
Primary (K-2)
Lesson Type
Quick Query

Lesson Plan - Get It!

Audio: Image - Button Play
Image - Lession Started Image - Button Start
  • Do you know what an arthropod is?

Don't get crabby if you don't; just get into this lesson!


Arthropods are everywhere!

Insects, spiders, crabs, shrimp, scorpions, and lobsters are just a few examples of the many arthropods found around the world. Just like mammals, reptiles, amphibians, fish, and birds, arthropods have certain characteristics that we can use to identify them.

Read on to find out what these characteristics are!


Arthropods are similar to reptiles, amphibians, and fish. They are cold-blooded, too! This means they have to get their body temperature up with warmth from the sun, and cool down in the shade.

This is why you don't see many insects crawling around in the snow! They slow down when they get too cold. You may notice that arthropods become much more active when their bodies are warm.

giant desert hairy scorpion

Arthropods have segmented bodies; this means their bodies are divided into different parts. Check out some of the arthropods below.

  • Do you see the different segments in their bodies?

Ants have three body segments. Spiders have two body segments:

ant and spider

Arthropods have multiple limbs. Spiders have eight legs and insects have six legs. Millipedes can have hundreds of legs!

Check out all the legs on the millipede below:

orange millipede

All arthropods have an exoskeleton. This is the protective shell on the outside of its body. This shell keeps them safe.

Check out the crab below. Crabs have strong exoskeletons to protect them from predators:


Arthropods have one characteristic that sets them apart from mammals, reptiles, amphibians, fish, and birds — they don't have a backbone! This means they are invertebrates!

blue lobster

Arthropods, reptiles, amphibians, fish, and birds all have something in common. They lay eggs.

Arthropods lay eggs, and those eggs hatch into their young. Some arthropods lay a lot of eggs and some only lay a few. Scorpions do not lay eggs; they carry live babies on their backs until they are fully developed.

spider eggs

Before you move on to the next section, tell a parent or teacher something that makes arthropods different from every other type of animal you have learned about so far. Tell a parent or teacher one thing they have in common with other types of animals.

Great work! Once you have answered both questions correctly, move on to the next section.

Image - Button Next

Elephango's Philosophy

We help prepare learners for a future that cannot yet be defined. They must be ready for change, willing to learn and able to think critically. Elephango is designed to create lifelong learners who are ready for that rapidly changing future.