Classification Keys Dichotomous keys What is a dichotomous

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Classification Keys

Classification Keys

Dichotomous keys • What is a dichotomous key? • Divided into two parts •

Dichotomous keys • What is a dichotomous key? • Divided into two parts • A step-by-step guide to identify an organism – Each step gives a choice of two descriptions. – The descriptions have to be opposites • Ex. Leaves round vs. leaves not round

Classifying Mr Men

Classifying Mr Men

Meet the Mr Men Mr Forgetful Mr Clumsy Mr Happy Mr Fussy Mr Strong

Meet the Mr Men Mr Forgetful Mr Clumsy Mr Happy Mr Fussy Mr Strong Mr Impossible Mr Noisy Mr Grumpy

What characteristic splits the group in half 1) Does he have a hat?

What characteristic splits the group in half 1) Does he have a hat?

Mr Men with Hats 2) Is he round?

Mr Men with Hats 2) Is he round?

Mr Men without Hats 2)Does he have hair?

Mr Men without Hats 2)Does he have hair?

Mr Men with Hats who are round • 3)Is his hat red?

Mr Men with Hats who are round • 3)Is his hat red?

Mr Men with hats who aren’t round 3)Is he smiling

Mr Men with hats who aren’t round 3)Is he smiling

Mr Men without hats who have hair 3)Is his hair neat and tidy?

Mr Men without hats who have hair 3)Is his hair neat and tidy?

Mr Men without hats and hair 3) Is he wearing shoes?

Mr Men without hats and hair 3) Is he wearing shoes?

Mr Clumsy His Characteristics • He doesn’t have a hat • He has hair

Mr Clumsy His Characteristics • He doesn’t have a hat • He has hair • His hair isn’t neat and tidy Back to the start

Mr Forgetful His Characteristics • He does have a hat • He is round

Mr Forgetful His Characteristics • He does have a hat • He is round • His hat is red Back to the start

Mr Fussy His Characteristics • He doesn’t have a hat • He has hair

Mr Fussy His Characteristics • He doesn’t have a hat • He has hair • His hair is neat and tidy Back to the start

Mr Grumpy His Characteristics • He does have a hat • He isn’t round

Mr Grumpy His Characteristics • He does have a hat • He isn’t round • He isn’t smiling Back to the start

Mr Happy His Characteristics • He doesn’t have a hat • He doesn’t have

Mr Happy His Characteristics • He doesn’t have a hat • He doesn’t have hair • He isn’t wearing shoes Back to the start

Mr Impossible His Characteristics • He does have a hat • He is round

Mr Impossible His Characteristics • He does have a hat • He is round • His hat isn’t red Back to the start

Mr Noisy His Characteristics • He doesn’t have a hat • He doesn’t have

Mr Noisy His Characteristics • He doesn’t have a hat • He doesn’t have hair • He is wearing shoes Back to the start

Mr Strong His Characteristics • He does have a hat • He isn’t round

Mr Strong His Characteristics • He does have a hat • He isn’t round • He is smiling Back to the start

Think of suitable questions to help classify the 8 Mr Men shown below Classifying

Think of suitable questions to help classify the 8 Mr Men shown below Classifying Mr Men

Create a key that will allow you to identify students in a small group

Create a key that will allow you to identify students in a small group of about 8.