6.5 Maths Methods: Forecasting
6.30 Canal and Harbour Modelling
6.55 Measuring with Light
7.20 The Chemistry Detectives
7.45 Neurochemistry

The Embassy
World Professional Snooker Championship from the Crucible Theatre, Sheffield
Seventh day
Sixteen players remain from an original field of 94 as the tournament moves towards its second week - and the really big money.
10.30 STEVE DAVIS , once again the holder and always the pre-toumament favourite, is expected to play JOHN SPENCER. With five world titles between them it will be a tactical battle. KIRK STEVENS - fresh from his masterful break of 147 at Wembley - is likely to play DAVID TAYLOR in their best-of-25-frame match on the next table.
2.30 pm Snooker Break: DAVID VINE with experts and personalities.
3.0 TERRY GRIFFITHS and BILL WERBENIUK should begin their second-round confrontation while the captain of Wales and six-times World Champion, RAY REARDON , should face TONY MEO. Introduced by DAVID ICKE Commentator TED LOWE
JACK KARNEHM , CLIVE EVERTON

OU programmes of general interest.
A BBC/Open University production

The use of language is affected by who we talk to and what we talk about.
Schoolchildren are taught how to adapt written and spoken language. Producer CLARE FALKNER
A BBC/Open University production

with subtitles, followed by Weather

Sidney Toler as Charlie Chan in Dangerous Money
When special agent Scott Pearson is murdered on board the SS Newcastle, the indefatigable Charlie naturally begins an investigation. Aided and hindered by son Jimmy and chauffeur Chattanooga, the detective uncovers a smuggling ring - but not before further murders are committed....
Based on the character created by EARL DERR BIGGERS
Produced by JAMES S. BURKETT Directed by TERRY MORSE
Films: page 17

Robin Denselow in the company of Blancmange's lead singer Neil Arthur
Pianist and rock TV presenter Jools Holland and Rolling Stone Bill Wyman take a critical look at this weeks main rock and pop events, new releases, films, concerts, books and videos. Including DAVID BOWIE 'S Serious Moonlight tour video, DEBORAH SPUNGEN 'S book And I Don't Want to Live This Life and B. B. KING 'S s recent London concerts.
Executive producer MICHAEL APPLETON Director MAY MILLER
Producer TREVOR DANN

The Embassy
World Professional Snooker Championship from the Crucible Theatre, Sheffield
Seventh day
Last year's champion, STEVE DAVIS , will know by the end of the evening whether or not he will have qualified for the second week and the quarter-finals, as his match - probably against JOHN SPENCER - is concluded.
DAVID VINE also has the latest news of TERRY GRIFFITHS and RAY REARDON who played their matches earlier this afternoon.

from Eastington with Geoff Hamilton and Clay Jones
Having lived nearly all their lives in this picturesque Cotswold village,
Ernest and Ethel Holland are truly in tune with the countryside. Their delightful cottage garden has been designed for a show of spring colour while their third-of-an-acre allotment renders them totally self-sufficient for soft fruit and vegetables.
Production assistant JEAN LAUGHTON Executive producer JOHN KENYON Producer DENISw. GARTSIDE BBC Pebble Mill
Plant list on Ceefax page 261

STEVE DAVIS V JOHN SPENCER to a finish, and the continuation of KIRK STEVENS 'S match against DAVID TAYLOR are the forecast matches tonight.

An 11-part television history of Britain at work in the 20th century. 3: Counter Revolution
When Rita Greendale started as a shop assistant in a Hull greengrocer's there was a long apprenticeship:
'I weren't allowed to serve anybody for about a year. I had to observe the correct way to serve people. In the meantime you did all the dirty jobs.' Tea, cocoa, raisins and currants were still sold loose when Servetus Hartley began in the Rochdale Co-op. Then the manufacturers began to send their goods in packets:
'We were selling loose things, weighing them out, and that was our labour. We thought that if it came in packets there wouldn't be any jobs.'
But pre-packaging was only one of the changes that swept through retailing. From the family-owned shop to the multiple chain, from counter-service to the supermarket, there was a constant turnover. Many went out of business. Others became millionaires. Narrator John Woodvine
Music by CARL DAVIS
Videotape editor CHRIS BOOTH Film editor DAVE LEE
Reseacher JOANNA CUNTON-DAVIS Producer AVERIL WARD
Executive producer PETER PAGNAMENTA
Book, same title, 910.75 from booksellers ie Subtitles on Ceefax page 270

DAVID VINE introduces further coverage from Sheffield.

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

DAVID VINE with facts and highlights from Sheffield.