In reply to MHeaton1:
Agree with the Annecy suggestion. But you might also explore the Undiscovered Alps website - further south than Chamonix so better weather, and they apparently do set out to supply activities for all ages. If you don't want to join a group, you could still explore the area from the Alpes Dauphine campsite above the delightful town of Gap. Easily accessible mountain walks in the Champsaur north of the town, crags west of the town on the edge of the Ceuse plateau. And somewhere entirely different, how about Pralognan in the heart of the Vanoise? And another idea, Briancon? Fascinating old walled town, beautiful walks in the Nevache valley north of the town.