6.5 Maths: Quadric Surfaces
6.30 History of Mathematics
6.55 Pine Point Mine: Origins
7.20 The Real World
7.45 Foretelling Fatigue Life

A See-Saw programme

A series for 4- and 5-year-olds Across
Introduced by STEPHEN TATE and Purrfecta the Pussycat
Producer JUDITH MILES

England v West Indies for the Texaco Trophy from Old Trafford Further coverage

with subtitles, followed by Weather

Presented by Anneka Rice
Windsor Davies and his wife Lynne go to sea and presenter ANNEKA RICE parachutes from 2,000 feet. 'I never thought when we started we'd be out here sailing along by ourselves', says Windsor to his wife Lynne as they sail to Llanddwyn Island in North Wales. 'The plane will still be there - it'll be you that's gone', says the parachute instructor as he explains jump procedure to Anneka Rice.
Film editor PATRICK FLEMING Research VICKI MOORE
Produced by PETER RAMSDEN

with John Pitman
Six films which go behind the scenes of places which have become part of the British way of life. 3: Selfridges
The scene: Selfridges, the biggest shop in the West End of London.
The players: 3,000 employees who are briefed to 'entertain the public, not just take their money'.
MAURICE, the postman, is doing his Norman Wisdom act; COLIN, the designer, is trying to get a camel to chew sideways not up and down, and KAREN is waylaying men to spray them with a product she has to promote.
Prowling around the store are BRON and OLIVE who look like a couple of housewives on a day out-they're after shoplifters and Bron has a reputation for always getting her man or woman-'unless they're bigger than me'.
Backstage, as always, is STAN, the goods liftman, who says of customers: 'they're all right. I mean, we have to have them. It's as simple as that'.
I loved every minute of it (DAILY MAIL) Another absorbing foray into everyday life
(DAILY EXPRESS)
Director ADAM CURTIS

Presented by Tony Soper with Brian Leith
A weekly look at wildlife
What's the countryside worth? - in America they have duck stamps and chickadee checkoffs to raise money for conservation. In Britain, with no such schemes, we spend 150 times as much on our pets than on protecting our natural heritage. David Bellamy questions our priorities.
Ozone and acid rain - in Switzerland, ozone is killing the forests. The motor car is blamed and demands are being made for a reduction in the speed limit, and elimination of lead in petrol. In Britain, acid rain is blamed for causing major environmental damage. What action is being taken?
Producer ROBIN HELLIER
Editor ANDREW NEAL. BBC Bristol

continues a major season of his films, tonight with Lee Marvin
Cattleman Jim Kane is down on his luck, so the offer of a 'get rich quick' job in Mexico sounds almost too good to be true. He rounds up a tough side-kick for company but soon finds himself in trouble as well as in jail. Newman is joined by Lee Marvin in this off-beat and often comic Western.
Screenplay by TERRY MALICK
Based on the novel Jim Kane by J. P. S. BROWN
Produced by JOHN FOREMAN
Directed by STUART ROSENBERG

John Tusa , Peter Snow and Donald MacCormick present the reports and interviews that matter with the analysis that counts.

England v West Indies for the ' Texaco Trophy from Old Trafford
PETER WEST introduces highlights from today's one-day international
Executive producer NICK HUNTER

11.50 The Periodic Table
The Periodic Table of Elements gives important clues to the physical and chemical properties of different elements and how they are related.
12.15 Social Psychology: You Don't Fool Me The social psychological experiment tests to see if non-verbal behaviour - hands, feet and face -gives clues to deception.
12.40 Handicapped in the Community
What sort of difficulties does a disabled person encounter in 'negotiating' the environment? Things are no easier on the day of a job interview. Is there a better way?