Ask the pupils to get out the scoring tables (they're supposed to have it always with them in class), and draw their attention to:

a			the five magic numbers
b			the "equality" of scores in part games just as in game scores; show them that 1 + 2 and 2 + 1 scores as much as 3; guide them towards the logical deduction: it is pointless raising the bid if that brings no higher score (advice 17.3). So we shall reconsider the Decision Table and bid contracts at the "lowest sufficient level" (advice 17.4)
	**		in No-Trumps:
		**	only remain at 1NT if you find that the two hands have not got the necessary 25 H points for game; why bid 2 since 1 plus one extra scores as much?
			only bid 3 NT if you are in the range 25-32 points: you don't bid 4 or 5 NT which score no higher than 3 NT + 1 or + 2 (advice 17.5).
	**		in a suit (in major):
		**	if you are under 27 DH points, it is pointless to bid higher than 1 or 1;
		**	if you don't have 33 DH and at least 27, stay wisely at the 4 level, a game call (5 gives you nothing extra).