6.5 education in Britain. 6.30 The Moonies: Why Join" Why Stay? 6.55 Maths: Trigonometric Formulas. 7.25 Seeing Through Drawings. 7.45 Bath: 18th Century.

( Shown yesterday on BCC1 1.25, not Scot)

4: Take a Deep Breath ...

This week Ben Bazell explains how the theme 'Going Out' is expressed through books and films.
Illustrator QUENTIN BLAKE Designer GWEN EVANS Producer JOHN LANE
Editor CYNTHIA FELGATE

A second series of 12 programmes 7: Probability
If the impossible is given a probability of 0 and the inevitable is given a probability of 1, then what is neither impossible nor inevitable in life must be given a probability between 0 and 1. Sometimes you'll have to decide the number for yourself, sometimes you'll be given it. After that, a tree diagram is a good idea. Presented by NORMANGOWAR (Open University)
Director PATRICK TITLEY Producer ROBERT CLAMP
Books, Maths Help parts 1 and 2, £3.95 each from booksellers

9: Thinking and Doing

4: Britain Must Be Strong

Five reports by BOB SALKELD
4: Let's Fiddle with the Facts
Words, numbers and pictures are the usual ways of communicating ideas. How can the micro help to deal with the increasing amount of data in the classroom?
Director TOM ROBERTS
Producer MICHAELGARROD

Everyone communicates by language -a range of sounds. This is an investigation into how and why different sounds are produced, and a discussion of the significance of pitch, voice quality and accent.
Producer KEN LITTLE
A BBC/Open University production

A classic cliff hanger in 15 chapters
Chapter I : Secret Weapon
In which Claire Forrest enlists the aid of famous criminologist Lance Reardon to find her missing scientist father, inventor of a revolutionary radiotomic power transmitter. Their discovery that Forrest is the prisoner of the mysterious and sinister Capt Mephisto leads Lance into deadly danger from a lethal radium vapour ray.
(Chapter 2, tomorrow at 5.40)

The last of four programmes 1851 -Todays headlines ...
Eight people are killed when the
7.30 from Chester runs out of steam ... a new Napoleon seizes power in France ... and the souvenir industry makes a killing at the Great Exhibition. Chris Serle looks at the news stories of 1851 with Judy Merry and John Mundy
Designer BARRY ROACH Director MIKE HEALEY Producer DAVID BROWN

from Riverside Studios, Hammersmith
Video from Post War .Nudes; the result of the photo-copy art competition; and Boys from the Black-stuff author Alan Bleasdale is interviewed as part of a wider look at the Liverpool scene.
The Liverpool emphasis of this week is continued with studio band It's Immaterial.
Executive producer MICHAELAPPLETON Director DAVIDG. CROFT
Producer JOHN BURROWES

with subtitles, followed by Weather

Michael Dean introduces more entries in this competition for film enthusiasts and film-makers.
Tonight's jury: Ken Loach, Mai Zetterling, Roger Mills

Boxing -
Colin Jones v Kirkland Laing 1981 At their first meeting a year earlier, Laing boxed his way towards victory until Jones suddenly made contact with a straight right. The re-match ...
Series producer JEFF GODDARD
Harry Carpenter 's Videobook of Sport
Vol 2. a new BBC videobook and Lascrvision videodisc (BBCV 5019). from retailers

by Daphne du Maurier dramatised in four parts by Hugh Whitemore
Starring Geraldine Chaplin as Cousin Rachel with Christopher Guard as Philip
Every year, for the sake of his health, Ambrose has wintered happily abroad. By chance this year he meets a distant relation, the Contessa Sangalletti - his cousin Rachel - and tragedy strikes.
Subtitles on Ceefax page 270

The Great Plains Massacre
The Great Plains of North America once swarmed with wild game. Herds of bison, tens of millions of them, provided food, clothing and shelter for the Indian tribes. Then, in the space of one lifetime, the bison were virtually exterminated.
How did it happen? This true story of the American West tells how the natural instincts of the bison betrayed them to the hunters' guns, how the Indian culture crumbled as the herds were slaughtered - and how a few enthusiasts rescued the bison from extinction. Narrator PATRICKSTEWART
Film editor JIMLATHAM
Horizon editor GRAHAMMASSEY
Written and produced by DICK GILLING

by PETER RANSLEY. A story based on A Shepherd's Life by w. H. HUDSON with Carolyn Pickles
Ian Redford and Sandra Voe 2: Birth
Spring 1820. The lambing season is the busiest time of year for shepherd Isaac Bawcombe. However, he has other things to worry about - Mary, his wife, is about to give birth, and midwives are scarce.
Extraordinarily powerful (FINANCIAL TIMES)
Producer RUTH CALEB
Directed by PETER SMITH

Hull Prison - Top Security
Robin Denselow reports from the maximum security prison that in 1976 was shaken by the worst jail riot in Britain this century. This first film ever from inside the prison includes interviews with murderers, drug smugglers and other long-stay convicts about life inside one of Britain's most forbidding institutions.
Hull producer TOM BARNICOAT

11.40 What Makes a Reaction Go?
Can we extract the hydrogen in water by the tharmat decomposition of steam? This programme examines the thermodynamics of such a chemical reaction. which could provide almost limitless fuel for a hydrogen-based economy.
12.5 am Social Work in fiction
A look at how effective the social worker can be in relieving some of the problems of poverty and inequality in Britain.