This handbook is a collaborative effort of the Inter-Parliamentary Union and UNICEF, addresses some of the key ways in which parliamentarians can guarantee that children's voices, concerns and interests find expression in and are taken into account by parliaments. It aims to provide parliamentarians with information on a variety of effective mechanisms to ensure that children's participation in parliaments is meaningful, reflects the voices of the most marginalized and contributes to policies, laws and budgets that will help correct the disparities and inequities that afflict the world's children.