I have taught both old and young with patience and have had positive outcomes where their skills level goes from novice to expert, from average to excellent without breaking the bank.
Everyday experience gives the best example for mathematical situations therefore exploring it makes understanding and carrying out calculations easier and faster. There is always a solution to any mathematical question once we identify the konwns and unknowns, this approach is my best and has helped my candidates understand better. Changing the narrative that maths is difficult is my priority and with my easy to practice technique I have done so successfully over the years.