Vertebrates and Invertebrates, Read and Classify

Start with something students can look at or think about: a photo, a short video, a jar on the windowsill, or a question like "what do you already know about classification of living things?" Then let them work through it independently, using a partner or small group only if they want to talk through their thinking, keeping a word bank or anchor chart in view so the vocabulary stays available. When you review, ask students how they knew, and let them point to the part of the diagram or reading that told them. These classification of living things worksheets work well as a lead in before an investigation, as a way to capture what students noticed afterward, or as review before an assessment.

Read about vertebrates and invertebrates and classify 12 animals. A vertebrate is an animal with a backbone. An invertebrate is an animal without a backbone. The directions on the page read: Read about animals with and without a backbone. Then, turn the page to sort the animals. On page 2: Use the reading on page 1. Write V or I in each box. Then, answer the questions. The answer key covers the questions on page 2.

Yes, both. We made it for 3rd Grade living things, and the page works the same whether it lands on a kitchen table or a center rotation. At home, most families go through it together and talk the answers out loud, and that talking is where most of the learning happens with classification of living things. In class it runs well as independent work while you pull a small group. Print one copy or thirty, whichever the day needs.

It teaches students that scientists organize living things into categories based on shared characteristics. Third graders learn to distinguish between plants, animals, and other organisms, and begin to recognize subcategories like mammals, reptiles, and insects. This skill builds critical thinking and observation habits.

This topic is typically introduced in Grade 3 life science units, often at the start of a unit on living things or ecosystems. It lays the groundwork for later learning about food chains, adaptations, and ecosystems. Most 8-9 year olds are ready to sort and categorize using observable traits.

Use the worksheets to spark conversations during walks or nature visits, ask your child to sort animals they see into groups. The sorting and labeling activities reinforce vocabulary without feeling like homework. Even 10-15 minutes of focused practice builds confidence for classroom tests.

7 printable worksheets, all free to preview. Downloads are included with a ClassWeekly free trial, and every page prints on standard 8.5 x 11 paper.

These are written for 3rd Grade students, roughly ages 8-9. Many teachers also use them a grade up for review or a grade down as an extension, so use the preview to judge the fit for a particular child.

Yes. Each one shows the NGSS code it covers on its own page, so you can check the alignment yourself rather than taking our word for it.