6.40 Mathematical Experience. 7.5 Combined Heat and Power. 7.30 Computing in Electronics.

Story: Jonathan's Bedroom by LINDSEY FERRARY
Presenters
Elizabeth Millbank , Don Spencer

The Embassy World Professional Snooker Championship from the Crucible Theatre, Sheffield.
As the tinal second-round match is completed this morning so the quarter-finals take over. DAVID VINE introduces nearly six hours of coverage as the World Championship moves into the big money, and eight players fix their sights on the greatest prize in snooker.

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

The classic serial in 12 exciting episodes starring
9: Bodies Without Minds
In which Buck Rogers is trapped in one of Killer Kane's amnesia helmets, and Buddy is captured when he attempts to rescue Buck. Directed by FORD BEEBE and SAUL GOODKIND
(Episode 10 tomorrow at 5.40. For cast see page 53)

Frame of the Day
DAVID VINE introduces a frame that will be remembered by two of today's quarter-finalists at the World Championship in Sheffield.

Ken Cooper takes an outside broadcast unit On Location to Sheffield Children's Hospital to find out how its young patients adapt to life on the wards. From the surgeons to the teachers, caring for sick children is a special kind of job.
(Tomorrow the On Location team visits Lincoln Cathedral at 6.25 pm)

Eight programmes about renovating old furniture at home. Presented by DAVID DAY and ALBERT JACKSON
4: All Sorts of Chairs
Chairs are possibly the items of furniture most often in need of renovation. What you do to them depends on the type - frame chair, balloon back, bentwood or stick chair.
Film editorAL GELL
ProducerRON BLOOMFIELD
(Tuesday Call on R4 at 9.5 am is about restoring furniture)
Boofc (same title) £4.75, from booksellers 9 BETTER THAN NEW: page 77

with subtitles followed by Weather

A series of six programmes.
Men and women on the industrial production line stop for a breather -and to talk about their lives, jobs and concerns.
1: Telecommunications Workers at GEC, Raglan St, Coventry
Film cameraman Steve Saunderson
Film editor Greg Miller
Producer Philip Donnellan

The fourth of six programmes about families who make music together.
Presented by Roy Castle and featuring
The Wolffs, from Oxford.
The amazing world of the brass bands is explored in this film: the guide is FRANK WOLFF , who plays in, and organises the City of Oxford Silver Band. He teaches 5-and 6-year-olds how to master the cornet, trombone, tenor horn; and he has encouraged his two daughters to become first division brass players. MARILYN has just graduated from the Royal Academy of Music; ELAINE was Brass Cham pion in the BBC Young Musician of the Year Competition.
The Tricks from Budleigh Salter -ton. Pillars of the local Methodist church, where the TRICKS family has always dominated (and now threatens to monopolise) the choir. Nine brothers and sisters, plus spouses, and six additional cousins, make up this family choir which is filmed in preparations and rehearsals for the Harvest Festival. Reporter JILL PHILLIPS
Film editor Laurie JONES
Film director HILARY MURPHY
Producer TONY STAVEACRE. BBC Bristol
(International Young Musician of the Year 1982: tomorrow at 8.20 pm)

starring Johnny Mathis In Concert at the Dominion Theatre, London and in conversation with Noel Edmonds
Part one of three silver anniversary programmes of words and music, recorded during his autumn tour of Britain.
Musical directorJIM gandoglia Videotape editorIAN Williams SoundGRAHAM HAINES Lighting BILL MILLAR
Engineering manager REG HUTCHINGS Designer TOM YARDLEY JONES
Production YVONNE littlewood

The Embassy World Professional Snooker
Championship from the Crucible Theatre, Sheffield.
Earlier today the quarter-final line-up was completed.
DAVID VINE introduces highlights of tonight's matches.

First in a series of seven films about the source of human abilities.

Vicki is a 29-year-old American woman who appears, speaks and moves normally, but has had her brain split in two by a surgical operation to combat her previously untreatable epilepsy. Now she has two half-brains and so one hand literally does not know what the other is doing. The right will choose different clothes to the left. She ends up talking to one of the hands or even smacking it.

Each side of Vicki's brain speaks and writes independently. Either she is two selves, one in each half brain, or the self is in one side of the brain, or perhaps the self is not inside the brain at all.

Narrator Colin Blakely

Feature p70
(Repeated on Thursday at 8.10pm)

The Embassy World Professional Snooker Championship from the Crucible Theatre, Sheffield.
DAVID VINE introduces further coverage of tonight's quarter-finals.

Presented by Peter Snow, John Tusa and Donald MacCormick
Joan Bakewell has first news of stories from the arts; David Icke and Marshall Lee have the stories from behind the world of sport.

Further coverage and the day's results from Sheffield.