Maths Mind Reading

How to use these cards!!!   For the classroom please make them large enough for all to see

  (Dont forget to put your magic Clock and hat on)

1.    Have your child or student to choose a number from 1 to 31, but keep it secret, or write it on paper and keep hidden

2.    Now ask them to point to the cards that their number appears on, still keeping their number secret.

3.    With a flourish of your magic Wand and "Abracadabra" Add, in your head, the first numbers on each card and give the answer to the child.
        If they chose 23 you will find 23 on Cards 1, 2, 3, 5.  
        The first numbers on each card are, 1 + 2 + 4 + 16 which add to 23!!!

4.     Repeat with another child or student!!!!

Please DO NOT tell them what you are doing.  The real joy for the children is to investigate and discover what you are doing.  They could also make their own cards.

For Older Children/Students:     Use these cards

Teachers/parents have you worked out how these cards are made?  If you can not work it out message me and I will give you some hints.  Again please dont TELL the kids, let them work it out for themselves.   A Hint: it is based on a number system smaller than our usual groups of 10!!