Helping the dyslexic individual with maths
by Steve Chinn
Try to use the facts you do know to work out the facts you
do not know. For example, multiply 2 twice to get the four
times tables facts, or halve the ten times facts to get the
five times facts.
Do the same with addition
and subtraction facts. Use what you do know and build around
those facts. For example, to add 9 to a number, add10 and
then subtract 1. Or to subtract 9, first take away ten, and
then add back 1. Add 6 as 5 plus one, and 7 as 5 plus 2.
Build up your confidence.
Learn to be comfortable with an estimate, which you can then
refine or check with a calculator. Take some risks!
Use the easy numbers
to help you understand how methods work. For example, if you
know that a half plus a quarter makes three quarters, then
you have access to the basic procedure for adding fractions.
Learn that much of mathematics
is inter-connected and use this to your advantage. For example,
adding and multiplying are closely connected, so you could
work out 7 x 8 by adding up seven lots of eight, or you could
work out 5 x 8 by multiplication, then 2 x 8 and add the answers
(40 plus 16) together to give 7 x 8 (56).
Go back to what you do
know and understand. It will almost always be more than you
think. Then use this to work at what you dont understand.
Build from firm foundations.
The concepts of mathematics
start early and transfer onwards. Algebra, for example, uses
all the rules of numeracy and is often easier than numbers.
For example, adding up the lengths of three sides of a triangle
might involve adding 37, 58 and 86. If it was algebra and
the sides were a, b and c, the total is written as a + b +
c, which is a much easier conclusion than 37 + 58 + 86 = 181.
Look for the development
of an idea in maths. For example, 3 + 5 = 8 develops into
30 + 50 = 80, 300 + 500 = 800, 0.3 + 0.5 = 0.8, 3a + 5a =
8a.
Overview a problem before
you start. See if you can get the whole picture and find the
familiarity. For example, when adding a column of numbers,
find the combinations which make ten and use these to reduce
the adding task. 6 + 5 + 8 + 9 + 4 + 2 + 3 + 2 could be re-arranged
as (6 + 4) + (5 + 2 + 3) + (8 + 2 ) + 9 = 10 + 10 + 10 + 9
= 39
Try to rephrase word
problems or represent the information in a diagram.