Most kids will know the song from Play School. So the book, by Michael Rosen and illustrated by Helen Oxenbury, is a nice follow-up activity.
Apart from being a good excuse to do lots of silly voices, We’re Going On Bear Hunt is a great for helping kids deal with their fears, in a gentle kind of way.
Speaking of Play School, it's always a joy to turn on the tele and see it still going strong. It started screening in 1966 when I was 2, making it the world's second longest running children's TV show (and making me feel old!).
I fondly recall Noni Hazelhurst's glory days as a presenter. Doug Anderson, the SMH's long-time reviewer for The Guide, would memorably end his occasional review of Play School with the words "...and Noni. Sigh."
I'm sure he only reviewed Play School so he could use that line. Well worth it.