The fiendish Troll Trap is among the pitfalls.
Tree frogs, tigers, desert reptiles. (AD)
The kids post Mr Solomon's letter.
The colours of the rainbow. (SL)
The intriguing past of a country pile in Staffordshire.
Repeats are not indicated.
10.30 See You, See Me (ages 7-9) Are You Ecofriendly? - The River 4658573
10.50 BBC Primary Geography (7-11) India
An Enterprise Week report that meets the mums setting up businesses from home. See also Dragons' Den at 8pm
Repeats are not indicated.
1.00 Pod's Mission (ages 8-9) Double bill.
Followed by The Witness
Romantic melodrama starring James Mason, Barbara Bel Geddes and Robert Ryan. A socially ambitious model regrets marrying a multimillionaire when he becomes increasingly possessive. Review page 56. Director Max Ophuls (1949. U)
(BW) Film Triva: page 64
A hotel with a garden that's good enough to eat.
2/10. The trainees roll up their sleeves in the sluice room and get to grips with a nasal tube. (S)
Two record-breaking eccentrics guest: a champion knitter and a jelly bean gueen. IS)
Can today's challengers triumph over the champion know-it-alls? Dermot Murnaghan hosts.
The latest news from the training studios as the celebrities and their dance partners gird their loins for another Saturday night showdown. IS)
1/6. Sports-car heaven, featuring the Aston Martin V8 Vantage, BMW M6 and Porsche 911 Carrera S. It costs nothing to dream. See Sunday's choice.
Repeated from Sunday at 8pm
New series 1/6. The award-winning series returns for a second run. It's the business pitch of their lives: aspiring entrepreneurs have just three minutes to convince a panel of self-made millionaires that their fledgling products are worthy of development - and investment. How will they perform under pressure? Tonight's brainwaves include an olive dispenser for bars, named underwear for children, a nifty bottle-stacking device for fridges, and wireless broadband for sailors. Presented by Evan Davis.
Director/Series producer John Hesling bbc.co.uk/dragonsden Ordeal by fire, plus Dragons' Den book offer: page 25
DOCUMENTARY OF THE WEEK
New series 1/4. The target of John Betjemen's friendly bombs and reckoned to be one of the 50 worst places to live in the UK, it's fair to say that the Berkshire town of Slough has a bit of an image problem; it's hardly surprising, then, that some of its folk are feeling a bit glum. In this intriguing social experiment, six experts in disciplines ranging from psychology to economics set out to raise happiness levels in the town. Will a "two-for-one" giveaway on flowers win a smile? A good old sing-song? Or how about that tried-and-tested banisher of the black dog - "graveyard therapy"? With strong language.
Series producer Gabe Solomon ; Exec producer Nicola Moody (AD) INTERACTIVE: poet Ian McMillan takes digital viewers through their typical day - find out what makes you happy via the red button The experts' agenda, plus book offer: page 31
6/6. Where Men Are Men. After writing a paper on the destruction of the universe, Dr Paul ponders his own annihilation following a run-in with a local thug.
Writer Harry Cripps ; Director Matt Lipsey ; Executive producers David Maher, David Taylor, Beryl Vertue and Sue Vertue
(AD) www.bbc.co.uk/comedy/supernova Rob Brydon guests in Little Britain on Thursday at 9pm on BBC1
Dr Paul Hamilton:
Dr Rachel Mann:
Professor Pip Cartwright:
Professor Mike French:
With Jeremy Paxman.
1/8. The lives of pupils and teachers in the Ugandan town of Masindi, where the new headmistress faces a financial crisis. Sophie Okenedo narrates.
11.50 2/8. A change in the rules for prefect elections means that girls are now allowed to volunteer. Enter strong-willed Susan, who is gunning for the top job. Directors Max Baring, Nicki Stoker : Series editor Bill Locke See also TV Africa on Thursday at 1120pm
Schools Repeats are not indicated.
2.00 Key Stage 3 Bitesize Revision Science 1. Biology and chemistry. 47993 4.00 Key Stage 3 Bitesize Revision Science 2