
Copy Cats
Years K  6 
Summary
Giving step by step building instructions to a partner to recreate a 3D object is a well known activity. Copy Cats has the same principles, but introduces a situation that cries out for a grid reference system. Children soon understand this need tend to apply a form of it themselves, thus giving the teacher an opportunity for discussion and, if necessary, refinement of their approach. Suitable for threading.
Materials
Acknowledgement
Sally Oakley & Gill Brazendale, East Devonport Primary School, with help from Lyndy Bowden, Christine Thorpe, Jane Cotton, Peta Cannamelo

How come they didn't turn out the same?

Procedure
Rules
 Two people sit back to back.
 Person A makes a pattern or shape in the red board with the yellow/blue plugs.
 Person A gives Person B instructions so the shape is reconstructed on Person B's board.
Stages
 Free exploration  children usually discover
 the need for a starting point to 'measure' from
 that the board should not be rotated during the game
 Using up, down, left, right
 Using north, south, east, west
 Using Cartesian coordinates (x, y)



Content
 1:1 correspondence
 language of space, position & order
 mapping skills  informal
 mathematical conversation
 mathematics & literacy partnership
 measurement, concept of
 spatial perception
 transformations (rotations, reflections, flips)

Apart from content listed opposite, some of the additional skills involved are listening, communicating, questioning, cooperating, sequencing, recording and problem solving.
Extensions
 This activity is a gridbased version of Task 60, Back To Back Building.
 Task 114, Where Is The Rectangle? extends learning related to the coordinate plane.
 The NRICH web site has a neat, softwarebased complement to this task which they call Poly Plug Rectangle. It offers several levels of challenge in the Teachers' Notes and video from classrooms.
Calculating Changes ... is a division of ... Mathematics Centre
