In reply to JimboW:
If you want to take them to an inspiring crag in a stunning location, with amazing sea views, and great easy lines on impeccable granite, then Bosigran is your place. IAlison Rib, Inbetween, Big Top- single pitch D/VD - and can then move left to multi pitch Vd/Sev Andrew, Ledge Route, Clob. Then Doorway and Doorpost HS. Loads of other options.
Halldrine Cove close by is also perfect for easy single pitch in beautiful environment, closer to sea so needs a bit more care.
Sennen- mainly single pitch in stunning spot- need to plan around tides.
Lots of other good spots in West Penwith.
No disrespect to other posters but I wouldn’t bother with Roche Rock, Cheesewring, you’ll wonder why you’ve dragged your kids there.