6.5 Maths Methods: Heat Transfer
6.30 Introduction to Sociology
6.55 More than Meets the Eye
7.20 Marking Time
7.45 Thermodynamic Energy

The Embassy
World Professional Snooker Championship from the Crucible Theatre, Sheffield
Fourteenth day The Semi-finals
The first semi-final continues as seven more frames of the 31-frame match are played.
Each losing semi-finalist will take home £12,700 to ease their disappointment at missing out on the title itself - and the E44,000 prize money that goes with it.
Introduced by DAVID ICKE Commentator TED LOWE
JACK KARNEHM , CLIVE EVERTON
Producers MIKE ADLEY
PETER HAMILTON. KEITH MACKENZIE Executive producer NICK HUNTER

DAVID VINE reveals who will be spending their May Day Holiday at Sheffield as the Shot of the Championship result is known when the winning card is drawn in the studio.
The second semi-final returns to the centre of the stage as another 7-frame session is played. DAVID ICKE introduces coverage from 3.0.
A BBC video, The People's Champion, recounting the excitement of the 1982 World Professional Championship, BBCV 5017

helps you plan your weekend by previewing daytime programmes of special interest from the Open University. This week's selection includes Reward Preferences and Thermodynamics in Action.
Producer JEREMY COOPER
A BBC/Open University production

The Hertfordshire County Council decided to close Chancellor's School in response to the sharply falling numbers of school-age children in the area. The Chancellor's Action Committee had other ideas, and a surprisingly well-matched contest ensued.
Producer JIM BURGE
A BBC/Open University production

with subtitles, followed by Weather

The Embassy
World Professional Snooker Championship from the Crucible Theatre, Sheffield
The Semi-finals
DAVID VINE introduces vital moments from both semi-finals as they approach the half-way stages.

Robin Denselow and Green of Scritti Politti
Radio 1 DJ Janice Long and Nick Lowe take a critical look at ! this week's main rock and pop events, new releases, films, concerts, books and videos.
Executive producer MICHAEL APPLETON Director MAY MILLER
Producer TREVOR DANN

by PETER MCDOUGALL
Gallahar may be a dangerous character, but Onnie feels good when he's with him-he knows he's joined the men! Then one day Onnie sees how dangerous Gallahar can really be....
Producer ANDREE MOLYNEUX

A personal history in 13 parts written and narrated by Alistair Cooke 2: The New-Found Land
ALISTAIR COOKE retraces the epic journeys of the French and Spanish adventurers, who were the first Europeans to explore North America.
One thing I didn't expect.... was the incredible beauty of this film. From the 'lunar landscape' of the Arizona desert to the streams and marshes of northern Canada, it paints a dazzling portrait of the land.
(LOS ANGELES TIMES)
Associate producer ANN TURNER. Produced and directed by MICHAEL GILL
Alistair Cooke 's Letter from America on Radio 4, Fridays at 9.30 pm

with Geoff Hamilton and Clay Jones
Joyce Johnson is a botanist and a painter, so it is no surprise to find that her small garden in Cheltenham is planted to have all-year-round colour. Her special enthusiasms are alpines, bonsai and do-it-yourself plant-breeding.
Production assistant JANE DON Producer JOHN KENYON BBC Pebble Mill
Gardening tips on Ceefax page 260
Books, Gardeners' World Fruit Garden,
92.50 and Gardeners' World: The L2 Garden, 92.25 (available on 24 May) from booksellers

The Embassy World Professional Snooker Championship from the Crucible Theatre, Sheffield The first semi-final is on stage tonight with 8 more frames (15-22) of the best-of-31-frame match.
DAVID VINE introduces highlights.

An 11-part television history of Britain at work in the 20th century. 4: Cotton People
Eighty years ago cotton goods were Britain's biggest export by far. A quarter of all overseas earnings came from cotton - 600,000 jobs depended on it: 'The biggest majority of Lancashire girls were cotton. They all had to go into the mills. And they were weaving, winding, beaming, reeling, picking the cops. They were everything.'
But the cotton people were about to go over a precipice. Trade slumped, and foreign competititors took over.
Was Lancashire an innocent victim of lower Asian wage rates, or could she have done more to re-equip and change with the times?
Narrator John Woodvine
Music by CARL DAVIS Film editor DAVE LEE
Assistant producer MAGGIE BROOKS Producer ANGELA HOLDSWORTH
Executive producer PETER PAGNAMENTA
(Book (same title) £10.75, from booksellers)

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

Further coverage, and the result of Shot of the Championship.