Help your child with square numbers by printing off squares made up of smaller squares (so you have a 2x2 square, 3x3 square, 4x4 square etc.)  Ask your child what number each one represents (4, 9, 16 etc).  You may want to get them to colour in the squares.  Now write square numbers up to 100 on cards.  Spread out all the squares and number cards and ask your child to match them up.  Time them doing this and see if they get quicker each time.  It is really important to have square numbers memorised prior to the eleven plus as this often comes up (also good to have cube numbers under their belt too!)