Whose sandwich?
Chandra, Jane, Terry and Harry ordered their lunches from the
sandwich shop. Use the information below to find out who ordered
each sandwich.
Age
5 to 7
Challenge level
Problem
Chandra, Jane, Terry and Harry ordered their lunches from the sandwich shop. The four sandwiches were Ham, Cheese, Jam and Tomato.
Image
Use the following information to find out who ordered each sandwich:
No one liked the type of sandwich that started with the same letter as their name.
Jane doesn't like Ham or Tomato.
Terry doesn't like Ham, and Harry doesn't eat Jam.
Getting Started
How could you draw or make a note of the information? Perhaps a table of some kind might help?
Student Solutions
Weiye, Susannah (from Headington Junior School), Harriet and Joshua (from Bedfordshire) all agree on this solution:
Chandra - ham
Jane - cheese
Terry - jam
Harry - tomato
Teachers' Resources
Why do this problem?
This problem requires logical thinking and would be a good
context in which to discuss different ways of representing
mathematics.
Key questions
What could you write down or draw to help?
What kind of sandwich did Jane order?
Possible support
It would help to talk to learners about what they could write
or draw as they work on this problem. You could start
just by listing all four children's name across the top of a piece
of paper, for example, which might help some pupils get started.