Frog length

Frog length

Pencil and paper
Overview
Using this Resource
Connecting to the Curriculum
Marking Student Responses
Working with Students
Further Resources
This task is about reading information from a stem-and-leaf graph.

David collected some frogs from a pond.

He measured how long they were and then let them go.

He put his results on to this stem-and-leaf graph.

Tens are on the left hand side and ones on the right hand side of the stem graph.

 

     Lengths of frogs (in millimetres)

 

 

 

How long was ...

 
a)
i)  the smallest frog? __________ millimetres
 
ii) the longest frog? __________ millimetres
  
b) How many frogs did David measure? __________
Task administration: 
This task is completed with pencil and paper only.
Level:
2
Curriculum info: 
Maths, Statistics, Statistical investigations
Keywords: 
stem-and-leaf graphs, graph interpretation
Description of task: 
This task requires students to answer questions about a stem-and-leaf graph of the lengths of seventeen frogs.
Curriculum Links: 
This resource can be used to help to identify students' ability to interpret a stem-and-leaf graph.
Learning Progression Frameworks
This resource can provide evidence of learning associated with
Statistical investigations, set 3
within the Mathematics Learning Progressions Frameworks.
Read more about the Learning Progressions Frameworks.
Answers/responses: 
 

Y4 (09/2000)

a)

i)
ii)

25
62

difficult
difficult

b)

17

moderate
Diagnostic and formative information: 
 

Common error

Likely reason

a) i)
   ii)

1
9

Smallest digit in the leaves.
Largest digit in the leaves.

a) i)
   ii)

2
133   447

Reads leaves as compact numerals.

b)

6
5

Number of stems.
Number of stems with associated leaves, i.e., excludes 1.