I can’t do any more of this ‘tables’ stuff, but I am asked about the issue so much…
Look, here’s a ‘tables’ square, slightly adjusted:
I’ve removed the 1x and 10x sectors. 1x is trivial, 10x needs special treatment.
If you fully appreciate the flip rule you can forget the grey airbrushed section.
The square numbers in the blue-green squares are a special beautiful group, well worth studying. Many patterns and much al-jebr live here…
The rest are in 8 columns, from 1 to 8. Add up the numbers from 1 to 8 in your head and it’s 36. [I did 8×9 and halved it).
The orange numbers can be found by doubling from single digit numbers. (Conversely by halving from the products).
The blue by treblings from single digit numbers.
There are 4 spaces left, 5×6, 5×7, 6×7, 6×9.
double 15, the two primes, 5 and 7 make 35, double 21 and double 27.
Study George Cuisenaire’s original product wall chart:
You can see all the doublings. Look carefully.
These products, the numbers in black, form
MILESTONES in the unknown territory to 100
By studying them as numbers, as we have previously discussed, their inner structures will become apparent, thus lessening the awful stress on memory so prevalent in today’s schools.
In addition by briefly studying the Primes to 100 it will become apparent to the little yellow belts that many numbers are rich in factors and many are not. They will generate a ‘feel’ for the rich numbers, learn their inner structures by familiarity and learn, as an aside, the so called ‘tables’ relevant to that number.
This however takes
A CHANGE OF PROGRAMMING
even in the minds of teachers, never mind the administrators
THIS IS PROBLEMATIC…
because even you and I dear reader
IMAGINE OURSELVES TO BE FREE
huatou: ‘Am I free?’