Dichotomous Keys

Branched Dichotomous Keys

But First... Quick Recap

Multiple Choice

What step do we always start with when using dichotomous keys?

• 1

• 2

• 3

• 4

Multiple Choice

When using a dichotomous key to identify organisms, what do we look at?

• physical features

• weather patterns

• environment

• diet

Drawing Practice

As well as being useful for identifying unknown organisms you come across, Dichotomous keys can be used to draw and sketch things.

In your books, attempt to draw each vehicle on the next slide based off the given key.

What is a branching key

• A branching key uses a tree diagram, with two clear choices at each step leading to TWO different answers/groups.

​Example

Open Ended

What is the difference between a branching dichotomous key and the ones we made yesterday?

Let's Make One!

Draw

Brain Break - Draw Your favourite Ocean Animal

​Your Turn

Create a BRANCHING Dichotomous Key on the provided sheet of the 'Mr Men' characters.