Lesson 6: Identifying Using Keys Revision Notes
Lesson Objectives
In this lesson, we’re going to become nature detectives, learning how to figure out what kind of plant or animal we’re looking at using something called a key. Students will be able to:
Grade B: Describe how keys can be used to identify an unknown species (a type of plant or animal we don’t know).
Grade A: Be able to create a key to separate a selection of species (organize different types of plants or animals so we can tell them apart).
What is a Key?
A key is a special set of questions that helps us figure out what species we have found. Each question has two choices, and depending on the answer, you move to the next question until you identify the species.
Using a Key to Identify Species
Imagine you find a leaf but don't know what tree it's from. You can use a key to help you find out by answering questions like:
Does the leaf have smooth edges or jagged edges?
Is the leaf long and thin or wide and round?
By answering these questions, you can find the exact type of tree your leaf comes from!
Making Your Own Key
To make your own key, you start by looking at a group of species and thinking about how they are different and similar. Then, you make a list of questions that will help someone else figure out which one is which.
How to Create a Simple Key
Start with broad differences like size or color.
Then ask about more specific details like the shape of leaves or number of legs.
Make sure each question has only two answers and leads to the next question.
Test Yourself
Keywords Explained Simply
Classification: Sorting things into groups based on what they are like.
Invertebrate: An animal without a backbone, like insects or snails.
Key: A guide with questions that helps you identify what kind of plant or animal you're looking at.
Keys are like a puzzle that helps you find the name of a plant or animal. It's fun to be a nature detective and use keys to learn about the living things around us!
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