If IPS 50 questions are used at the very beginning of tuition, children rarely finish in 30 minutes.
With regard to codes, with practice and using short cuts timing can be trimmed to approx 30 / 35 seconds. However I make the children complete these questions fully to start with to ensure they are comfortable with the technique.
A section of 9 codes from AFN, the long way could take approx 50/60 seconds a question. I constantly say "Codes take a long time, do not panic they are easy 100% marks."
I do not believe in the 30 second per question regardless of type or difficulty rule. It is variable, some question types will take under 10 seconds others with take 30/40/50 seconds. The Zs will take even longer.
It is a good idea to play alphabet games with the children, in order to become familar with the position of letters.
I have some plastic letters which I throw
to the children one at a time, in random order but in quick succession, they have to make up the alphabet, laid out in an arc. They have to think quickly as to where in the arc the letter goes.
To make it fun [and to amaze
their parents at the end of the session ] I teach...
A = 1
E = 5
M = 13 [26 letters, 13 = M for Middle]
T = 20 [ T for Twenty]
Z = 26 [ you would be surprised how many variations I get for the amount of letters in the alphabet!]
You can then ask questions..
What is the 6th letter of the alphabet = 1 after the 5 [E] = F
What is the 19th letter of the alphabet = 1 before 20 [T] = S
Add together the position numbers of E and N and give your answer as a letter
5 + 14 = 19 = S