Barry Chuckle has died, aged 73

"Episodes" of ChuckleMaths (although if they're only three minutes long and only six were made they may have been segments in Math Channel as opposed to episodes) appear to have been aired on the CBBC Channel as well in 2007.

That being said, Ben Clarke's Broadcastforschools.co.uk website suggests Maths Channel was only made between 2002 and 2004 and other sources suggest ChuckleMaths was made in 2009.

They were just segments as they are available on the various Maths Channel episode pages:
https://www.bbc.co.uk/programmes/b007cnyb/clips

But Maths Channel was repeated until 2011. So where 2009 comes from, I don't know.

Right now on Talking pictures, is Barry Chuckle last programme he made, #Grimaldi A bit of a poor slot personnel..

A poor slot?
Remind me again, when was the last time Talking Pictures appeared in the BARB Top 30 Multichannel listings?

Stop comparing a niche, (and to most of the wider audience) a largely unknown channel to a PSB in the first five slots of the EPG.

If this was on ITV at 11am on Boxing Day, you may have a fair point - but to be honest, given the expectations of a zero, or 0.01% rating of anything that channel airs, any slot they could have chose isn't going to be pile 'em in huge figures.

Just be thankful they are showing the last show he made as a tribute.

Im unsure as to what your post is about.

Anything on Talking Pictures is by definition in a poor slot.