6.5 Modern Art: Mondrian
6.30 Making Steel
6.55 Biology: Insect Hormones
7.20 Science: Alcohols Apart!
7.45 Physics: Magnetism

9.9 Encounter: Italy A Start in Life
Some young Italians' prospects; schooldays in a fishing village; life and child labour in old Naples; the impact of tourism in the south.
9.26 Twentieth-Century History Mr Kennedy and Mr Khrushchev
Further development in the Cold War. The contest between the United States and the Soviet Union between 1961 and 1963 leading to the Cuban missile crisis.
9.48 Maths at Work
4: Young people use CSE maths: a bonus clerk, laboratory assistant, kiln operator, process worker and a nurse. Narrator KIERAN PRENDIVILLE
Producer ROGER FRY
Series producer DAVID ROSEVEARE
10.8 Pages from Ceefax
10.35 Update USA 4: Energy Boom
In 1977 Evanston, a small railway town in the wide open spaces of Wyoming, found itself sitting on top of the biggest oil and gas discovery the USA has seen in recent years. Whether it really wanted the oil boom is a question Evanstonians have been asking themselves ever since.
Commentary PETER FRANCE Producer LEN BROWN
11.0 Watch
Birds. 1: Feathers
11.17 Computer Club
The Computer and the Mapmaker
A sewer has collapsed and workmen are about to dig a hole to find it. How can a computer help them avoid hitting some other underground pipe or cable?
Presenter mari PRICHARD Producer ROGER FRY
11.40 Mindstretchers: Problems
Problems with suggested solutions for 10- to 11-year-olds to promote thinking skills.
Weather Problems
What determines the climate? Series producer DAVID TAFT
(Solution on Friday at 10.40)
11.45 Pages from Ceefax
2.0 pm You and Me
A series for 4- and 5-year-olds
Cosmo and Dibs are back in the market with GARY WILMOT. There are new words 'open' and 'closed' to learn and just like Humpty Dumpty, Dibs's teddy can't be mended. Cosmo FRANCES KAY Dibs FRANCIS WRIGHT
Producer RICHARD CALLANAN
2.15 Near and Far The Great Outdoors
The Scottish Highlands are popular with walkers, climbers, canoeists and even skiers. But at what cost? Producer ROBIN GWYN
2.40 Look, Look and Look Again If you Go Down to the Woods
Printing, model making and fabric pictures of the environment. Producer EDWARD HAYWARD

What Are They Up To?
Two groups of boys attempt to improve their school's all-weather pitch and slide in the local park. Their teacher needs to help, teach and manage them.
Producer JEAN NUNN
A BBC/Open University production

with subtitles, followed by Weather

continues a short season of films starring Deanna Durbin with Franchot Tone
Scientist Oliver Dana has three daughters; one an 'actress', one a decided flirt and the third a nice girl. The trouble with being a 'nice girl', Jane decides, is that it's no fun. So she sets out to be as flirtatious as her younger sister - with complicated and comic results. This is one of the freshest and most light hearted of all Deanna Durbin 's films - boasting a fine cast and a rousing finale as she sings 'I pledge my heart to America'.
Screenplay by RICHARD CONNELL and GLADYS LEHMAN based on the story by PHYLLIS DUGANNE Produced by JOE PASTERNAK
Directed by WILLIAM A. SEITER Films: page 16

Presented this week from Germany by Heinz Wolff The
Aquabikes Heinz gives three teams bicycles plus some odds and ends and challenges them to cycle on water. During the ensuing race, some stay drier than others ...
And then there is The Incredible Egg Machine with Lesley Judd. This week an egg starts a long and complicated journey with a little help from a lavatory cistern and a conveyor belt. Guest judge Peter Schiller
Director PATRICK TITLEY Producer CHARLES HUFF

A Tribute with extracts from some of his many television programmes and appearances, including his last series of films, Time with Betjeman, shown in 1983. In these he talked about his life with family and old friends -John Piper , Osbert Lancaster , Barry Humphries , John Sparrow , Harry Williams and Jock Murray among them.
Narrated by Prunella Scales
Written and produced by JONATHAN STEDALL

The BBC Television International Sheepdog Championship
Introduced by Phil Drabble with Eric Halsall
The stamina, intelligence and quick-silver reflexes of the working collies are tested above Loch Lomond.
A part-time shepherd from County Armagh, a 19-year-old from County Tyrone and a farmer who grazes sheep in the shadow of the Sperrin Range of mountains make up today's team. Heat 4: Ireland
JOHN MCSWIGGAN with Rock GEORGE LUTTON with Glen GORDON WATT with Chip
Technical co-ordinator ROY SMITH Director MICHAEL KERR Producer LAN SMITH

Introduced by Maria Aitken
The conversation game in which well-known public personalities are invited to reveal some private memories. Tonight Zandra Rhodes and Peter Hall two workaholics at the top Music by PETER SKELLERN with STEFAN BEDNARCZYK
Assistant producer PETER ESTALL Director PHILIP CHILVERS
Producer FRANCES WHITAKER

Calculus: The Derived Function
How is the slope of a curve connected with the mathematical concept of a derived function? It's all to do with tangents and limits.