9.30 Science Topics: Catalysis

9.52 Look and Read: Badger Girl: 5: Lost on the Moor

10.15 Mathscore Two 3: A Matter of Degree
Cake, ships, a giant protractor and two burglars provide some new angles.
Producer DAVID ROSEVEARE

10.38 Exploring Science Fire, Earth, Metals
Producer PETER BRATT

11.0 Junior Craft, Design and Technology: Up and Down the Hill: Uphill
Downhill is fine, but what about uphill?

11.22 Japan: The Crowded Islands: Factory
A close-up view of a Hiroshima car factory and the everyday life of an assembly line worker and his family. Producer LEN BROWN

11.44 Going to Work: The Modern Office

12.5 pm The Computer Programme: 5: The New Media
An introduction to the use of computers with the emphasis on small machines. The language used is BBC BASIC.
Computer communications

12.30 Electronic Office 5: Wiring up the World
Electronic mail and message systems, the role of the telephone.

12.55 Whatever Happened to Britain?
An analysis of Britain's performance as an economic force since the industrial revolution.
5: A Tendency to Deflate
The international economy, the balance of payments.

1.20 Let's Go: 5: Let's Go Out Together
Ten programmes for moderately handicapped young adults, presented by Brian Rix
Let's Go Book 3 from BBC Publications, £1.50 including postage

1.38 Around Scotland: The Great Glen: The Caledonian Canal

2.0 Scene: Somewhere to Call My Own
Night shelters, hostels, hotel rooms and council flats - teenagers talk about the dreams and nightmares of leaving home. Producer PETER M. EVANS

2.30 English File: The Northern 50s
John Braine, Stan Barstow, Keith Waterhouse, Willis Hall, David Storey, Alan Plater... 'Northern' writers who made their start in the 50s. The literary map of Britain was suddenly changing and a new generation of writers was beginning to write - in realistic terms - about ordinary people. Producer DIANE MORGAN

International Tennis
The Pretty Polly Classic from The Brighton Centre
This tournament carries the highest prize money of any women's indoor event in Europe and as such has again attracted a quality entry.
PAM SHRIVER , currently ranked World No 4, heads the list. British hopes are on the shoulders of jo DURIE , who by her standards has had a poor season but looks to this tournament to finish the year on a high note.
Racing from Newbury
3.45 The Embassy Premier
Steeplechase (Qualifier. 2J m) Introduced by JULIAN WILSON Commentators
PETER O'SULLEVAN , RICHARD PITMAN

True Confessions
Bobby learns the truth about Charlie's father and meets
Jenna's ex from Italy. Ray and Donna uncover a dark secret from Edgar Randolph 's past, while J.R. works on Marilee Stone to leave Cliff Bames high and dry on the off-shore oil deal.
Written by DAVID PAULSEN Directed- by PAUL KRASNY
(For cast see Monday. Continued next Monday. Repeat)
*CEEFAX SUBTITLES

The Rothmans Grand Prix
The First Semi-final
Frames 1-7
The Tournament moves into overdrive, and the matches to the best of 17 frames.

with subtitles; Weather

Written and presented by David BeUamy.
1: The Great Winter
The dales of northern England provide the setting for a four-part story, for which no ending can yet be written. For 5,000 years a blanket of ice covered the dales when the world was in the grip of the Great Winter. The ice scoured and created new landscapes and as it retreated the dales began a new life. Produced by HARRY GREEN , MIKE WEATHERLEY

starring Roy Thinnes as David Vincent
Nightmare
When a schoolteacher in a small farming community reports a locust attack Vincent goes to the scene to investigate. The locals are hostile - is this a sceptical community or an alien conspiracy?
Written by JOHN KNEUBUHL Directed by PAUL WENDKOS

Gerald Harrison introduces
BBC-2's own brass band knock-out competition from
The Assembly Rooms, Derby. 5: First Semi-final
Desford Colliery Dowty Band, Midlands Champions, conducted by Howard Snell , play against
Fairey Engineering Band, North West Champions, conducted by Major Peter Parkes.
Soloists: Kevin Dye , playing the cornet for Desford Colliery Dowty Band, and Alan Wycherley , playing the soprano cornet for Fairey
Engineering Band, compete for the Viewers' Sovereign Award. Special guest supporters: Kay Alexander and Gerald Harrison
Judges:
Lt-Col Trevor L. Sharpe and Bernard Keeffe Lighting JOHN ALLINSON Sound NEIL MURRAY
Designer ANDY DIMOND Producer KEN GRIFFIN

The Rothmans Grand Prix
The First Semi-final Frames 8-17
The difference between the winner and loser of this match could amount to no less than
E30,000, quite apart from the prestige and world ranking points that the title brings to Sunday's champion. DAVID VINE introduces highlights of this evening's frames that mean so much to one and so much less to the other.
Commentators TED LOWE
JACK KARNEHM , CLIVE EVERTON Producers
MIKE ADLEY , KEITH MACKENZIE
Executive producer NICK HUNTER

A duel of words and wit between
Arthur Marshall
Moira Stuart
Charles Dance and Frank Muir
Hannah Gordon
Tim Rice
Referee Robert Robinson Devised by MARK GOODSON and BILL TODMAN
Produced and directed by PAUL CIANI

2: The Mayor of Montemilone Dino Labriola runs the small town of Montemilone in the deep south. He was elected the first Communist mayor. Now he faces the problems of a town dying on its feet.
There are no jobs, the young emigrate, the old have given up hope and government aid often goes astray. While Dino is determined to fight for his town, his wife Angela sometimes feels that the struggle is not worth it.
A massive dam is being built just outside Montemilone. It's a new threat to the town and to Dino's position as mayor.
Narrator Michael Pennington
Written by DAVID WILLEY
Film cameraman GODFREY JOHNSON Film sound RICHARD BOULTER Film editor GRAHAM SHIPMAN
Series producer JEREMY BENNETT Producer ADAM CURTIS

starring
Trick or Treatment
Life is weirder than usual at the 4077th when Hallowe'en casts its spell on the unit. Fr Mulcahy proves there is life after death, while a group of partying marines seem intent on finding out for themselves....
Written by DENNIS KOENIG
Directed by CHARLES S. DUBIN

The Rothmans Grand Prix
DAVID VINE introduces further coverage from Reading.

John Tusa , Peter Snow and Donald MacCormick with Ian Smith and Paul Barry present the reports and interviews that matter with the analysis that counts. J

The Pretty Polly Classic
Highlights of this evening's quarter-final matches played at the Brighton Centre.
Introduced by BARRY DAVIES Commentators
DAN MASKELL , GERALD WILLIAMS
ANN JONES , VIRGINIA WADE
Producer JOHNNIE WATHERSTON

DAVID vine introduces further coverage and the result from Reading.