In Kidsinmadrid.com you will find information of activities to do with kids in Madrid. It's a guide that offers information for parents and au pairs in Madrid. Many of the activities are held in English.
Meetup is the world's largest network of local groups. Meetup makes it easy for anyone to organize a local group or find one of the thousands already meeting up face-to-face. More than 9,000 groups get together in local communities each day, each one with the goal of improving themselves or their communities.