Clay model cross-sections II

Clay model cross-sections II

Pencil and paper
Overview
Using this Resource
Connecting to the Curriculum
Marking Student Responses
Further Resources
This task is about cross-sections of 3-dimensional objects.
a)
Use your modelling clay to make a rectangular prism.
 
  i)
What shape will its vertical cross-section look like?
Draw this cross-section in the box below.
 
 
  ii)
What shape will the horizontal cross-section of the rectangular prism look like? 
Draw this cross-section in the box below.
 
 
b)
Use your piece of modelling clay to make a sphere. What shape will its horizontal cross-section look like?
Draw this cross-section in the box below.
 
   
 
 
 
 
c)
Use your modelling clay to make a cylinder.
 
  i)
What shape will its vertical cross-section look like?
Draw this cross-section in the box below.
 
 
  ii)
What shape will its horizontal cross-section look like?
Draw this cross-section in the box below.
 
d)
Use your modelling clay to make a square-based pyramid.
 
  i)
What shape will its vertical cross-section look like?
Draw this cross-section in the box below.
 
 
  ii)
What shape will its horizontal cross-section look like?
Draw this cross-section in the box below.
 
Task administration: 
This task can be completed with pencil and paper, and other equipment.
 
Equipment
One piece of modelling clay per student.
  • Students may need to have the terms "vertical cross-section" and "horizontal cross-section" explained or modelled for them prior to carrying out this assessment activity.
  • The purpose of this activity is not to assess students' ability to construct the original shapes, so you may need to have some shapes already made up for the students to cut in case they have difficulty making any of them.
  • This item is assessing students' ability to predict a cross-section so it is important that students do not cut any of the shapes until all the cross sections have been drawn.
Level:
3
Curriculum info: 
Maths, Geometry and Measurement, Shape
Keywords: 
cross-sections, model construction, 3-dimensional shapes, drawing
Description of task: 
Students draw cross-sections of different 3-dimensional objects.
Answers/responses: 

a)

i)


ii)

b)

 

c)

i)

 

ii)

d)

i)

 

ii)