Circumference and diameter

Circumference and diameter

Pencil and paperOnline interactive
Overview
Using this Resource
Connecting to the Curriculum
Marking Student Responses
Further Resources
This task is about measuring the diameter and circumference of two objects.
This is a practical task.
Equipment needed: Clock, hoop, measuring tape.

Question 1Change answer

a)  Measure around the outside of the clock and the hoop to find the circumference of each object.
     Write your measurements in the table below.
b)  Measure straight across the clock and the hoop to find the diameter of each object.
     Write your measurements in the table below.
object circumference diameter
clock  cm  cm
hoop  cm  cm
 
c)  About how many times larger is the circumference of a circle than its diameter?  
Task administration: 
This task can be completed with pen and paper or online (with NO auto marking).
 
Equipment:
Measuring tape; round clock; hoop; calculator.
  • Before beginning this activity you will need to measure the circumference and the diameter on the clock and the hoop.
  • Students will need to work in pairs to measure the circumferences.
Level:
5
Curriculum info: 
Maths, Geometry and Measurement, Measurement
Keywords: 
circumference, diameter, reading scales
Description of task: 
In this practical task, students measure two circular objects to find the circumference, diameter and the relationship between them (pi).
Learning Progression Frameworks
This resource can provide evidence of learning associated with
Measurement sense, sets 7-8
within the Mathematics Learning Progressions Frameworks.
Read more about the Learning Progressions Frameworks.
Answers/responses: 
 
a) Measures the circumference of the clock to within 2 cm of accuracy.
Measures the circumference of the hoop to within 5 cm of accuracy.
b) Measures the diameter of the clock to within 1 cm of accuracy.
Measures the diameter of the hoop to within 2 cm of accuracy.
c) 3
[Accept 2.75-3.5]