6.5 Maths: Eccentricities. 6.30 Conflict in the Family. 6.55 Brazil: Facing the 80s. 7.20 Competing Theories 7.45 The American Budgetary Process.

9.15 Encounter: France: 1: Land and Sea
Five documentary films based on life in France, for European studies and background to language courses.

9.33 Rendez-Vous: France: Sur mer et sur terre
Language resource sequences, entirely in French, featuring everyday experiences of French teenagers and adults.

9.52 Talkabout. The King's Hiccups

10.12 Science Workshop: Fruit and Vegetables 'A'

10.34 Scene: Jackie McCafferty's Romance
by Peter McDougall.
(Repeat. For details see Friday)

11.5 Near and Far: What is a Street?
The first of three programmes for 9-11-year-olds about the geography of streets -how they are shown on maps, how they link places together and form natural centres.

11.30 Search: The Castles of Wales 1: Early Days
Wales is a land rich in castles-some remains date as far back as the Iron Age. These early strong-holds show age-old principles of defence but the 'castle' proper comes much later, introduced by the Normans.

11.55 Swim: 1: For Beginners
Andrew Harvey introduces ten programmes for swimmers and non-swimmers of all ages.

12.20 Illusions of Reality: 1: Window on the World
Cinema newsreels of the 1930s.
For series notes send a 12in x 9in sae (26p) to [address removed]

12.45-1.0 Write Away
Viewers are shown how to improve their spelling.
Presented by Barry Took.
With Michael Gambon, Zena Walker and Tilly Vosburgh.
Each programme advertises the national referral telephone number ([number removed]) to encourage people with reading, writing and spelling difficulties to get help from their local literacy centre. In Scotland the number is [number removed] and in Northern Ireland [number removed].

1.10 The Open University
Physics Demonstrations for Schools: 3: Gases - The Kinetic Theory
Using a series of models and demonstrations, the gas laws, diffusion and Maxwell-Boltzman distribution are explained.
Compiled from BBC/OU productions

1.38 Around Scotland: Burgh Life in 1623: 1: Merchant of Dunrossie
Written by Derek Walker.
A three-part unit on a merchant's family in 17th-century Scotland.

2.0 You and Me: Grand Old Duke of York
A series for 4- and 5-year-olds.
Roy Castle and Lucy, Georgie and Hugo march up the hill to explore Corfe Castle.

2.15 Music Time: 1: Working with Sounds
Jonathan Cohen takes the children to a building site to listen to different sounds.

2.40 Des le debut: Asking the Way
Basic French language skills shown in action through sketches and documentary film.

Further coverage of the first day of Ascot's September Meeting
4.10 The Cumberland Lodge Stakes dim)
Introduced by .JULIAN WILSON
Commentators PETER O'SULLEVAN
JIMMY LINDLEY, JOHN HANMER
TV presentation by BILL TAYLOR

Is the Universe expanding? If it is, how long will the expansion continue, and what will follow?
Producer Andrew crillt
A BBC/ Open University production

Hundreds of varieties of ' fancy ' pigeons have been bred over the centuries. Marian Foster visits Mike Knaggs , owner of the largest private pigeon loft in the country, and his sons Richard and David show Brian Watkins the simple way to keep pigeons.
Production assistant sue parley Produced by Andrew ueikle
Executive producer JOHN kehton BBC Pebble Mid

The feature film starring Denny Miller as Tarzan, Joanna Barnes as Jane

A colourful 1959 remake of the original Tarzan story.
Films: p 23

Outside Broadcast cameras on land and afloat accompany Paul Heiney around Mayflower Park, Southampton and on the Solent, as he takes a look at what's on offer at the 15th annual show. Producer KEN GRIFFIN

Six films of early exploration Introduced by Duncan Carse
3: Pictures from the Pole (1911)
Herbert Ponting was the foremost travel photographer of his generation. When Captain Scott commissioned him to film his final South Pole Expedition of 1909-12 Ponting little realised the hazards and difficulties that he would face. Scott summed up his job by saying: ' This photographing is the coldest job I have ever struck as well as the most risky '.
Considering the tremendous difficulties that he worked under, Ponting's record of Antarctic wild-life and his chronicle of the events leading up to Scott's fatal march to the Pole are truly remarkable. Narrator NIGEL PEGRAM
Film editor TARIQ ANWAR
Producer JOHN-PAUL DAVIDSON
Series editor RICHARD ROBINSON

Written by RAY CAMERON
BARRY CRYER , KENNY EVERETT
Kenny sets sail on the good ship Wacky with his merry crew.
Designers MARTIN COLLINS , DAVID HITCHCOCK Producer BILL WILSON

by Angus Wilson
A version for television in five parts by Troy Kennedy Martin

The death of a young keeper has not provoked the public enquiry Simon Carter had hoped for. The zoo's director can only think of his forthcoming television lecture.

(Subtitles on Ceefax page 270)

A preview of BBC2's new season which begins on Saturday and covers two centuries of opera.

The Unipart
British Professional Championship from The Coatham Bowl, Redcar
The first quarter-final
Commentators SID WADDELL and TONY GREEN

including PETER snow and VINCENT HANNA with a full report from the Liberal Assembly in Harrogate.

PETER PURVES introduces highlights of the second quarter-final

12.10 Whittlesea Mere

12.35 Change in a Therapeutic Community