For each intervention we provide a short description of the activities that proved effective, and examples of the types of settings and children and young people with which they were effective.
Ar gyfer pob ymyrraeth rydym yn rhoi disgrifiad byr o’r gweithgareddau a oedd yn effeithiol, ac enghreifftiau o’r math o leoliadau a gyda pha fath o blant a phobl ifanc yr oeddent yn effeithiol.