Rational/Irrational

Tom Carson recently shared this task with me.  I liked it so much that I asked to share it on the site.  So much going on with this one.  

A potential pedagogical action I have considered is to present only the table and ask the pupils to generate terms which would satisfy each cell.  Further prompting “generate one nobody else will have”, “generate a really weird looking one” etc.  Some pupils might need a little exemplification, or to work in pairs to get started. 

Credit: @offpistemaths 

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