6.5 Maths Methods: Halley's Comet
6.30 Conversing with Computers
6.55 A Community by Design?
7.20 The Universe Yesterday
7.45 Chemical Processes: Polymerisation

helps you plan your weekend by previewing daytime programmes of special interest from the Open University.
This week's selection includes: Managing the Desert Margin and Krishna and Christ Producer PIP SURGEY
A BBC/Open University production

Each Easter pilgrims from Greece and Cyprus flock to the Greek Orthodox Church of the Holy Sepulchre in Jerusalem and, through the liturgy of St John Chrysostom , proclaim that 'Christ is risen'.
This film follows the procession of sacred gifts and the celebration of the Eucharist.
Producer NUALA O'FAOLAIN
A BBC/Open University production

with subtitles, followed by Weather

Further coverage from
Flushing Meadow, New York, including highlights of last night's men's quarter final.

How does a nightmare begin? For David Vincent it began at four in the morning, looking for a short cut he never found. What he found instead were creatures from another world ...
Beach head starring
Having reported a UFO sighting, architect
David Vincent returns to the landing site with the police to find the ship gone. Only when he returns alone does he pick up the trail that will lead him into a fantastic and terrifying conspiracy.
Written by ANTHONY WILSON Directed by JOSEPH SARGENT

Gerald Harrison introduces the second of two programmes featuring musical highlights from last year's Best of Brass competition, played by Jones and Crossland Band North Skelton and District Band
Sun Life Band and the champions
Carlton Main Frickley Colliery Band
Also included is the winning soloist performance, played by Steve Mead , accompanied by the Sun Life Band
Recorded on location at the Assembly Rooms, Derby Assistant producer STEVE MORRIS
Producer KEN GRIFFIN

The last of three parts starring
The classic French love story adapted by Jean Anouilh concludes with des Grieux's desperate efforts to save
Manon from deportation to the colony of Louisiana.
English narration read by PETER BARKWORTH ana PETER FIRTH Adapted by JEAN ANOUILH from the novel by L'ABBE PREVOST
Directed by JEAN DELANNOY Music by JACQUES LOUSSIER (A French series with English subtitles)

from Wrenthorpe, Wakefield with Geoff Hamilton and Clay Jones
When Len Lindley converted two terraced cottages and their small gardens into one in 1970, he was faced with the problem of bringing the land into control fairly quickly. By initially laying a lawn larger than he would eventually need, he has been able to develop a garden at his own pace. Now the front garden is landscaped, and is full of all-the-year-round colour provided by trees, shrubs and herbaceous plants.
Until recently the back garden had remained mainly lawn.
Now, however, he has started landscaping it and is in the process of building and planting up a scree bed. It has taken several months to complete and a photographic record describes the steps.
Executive producer JOHN KENYON Production assistant JEAN LAUGHTON
Producer DENIS W. GARTSIDE BBC Pebble Mill

by MERVYN HAISMAN Music by NEIL INNES
Last of five instalments starring
with the voice of Bob Danvers Walker Special guest star
In which all is revealed and Jane takes over.

starring
Anything Wrong?
Something is worrying Joe and Rhoda is relieved when he finally agrees to talk about it. But she is not too thrilled when Joe picks his twice-divorced father for the heart-to-heart chat.
Written by COLEMAN MITCHELL and GEOFFREY NEIGHER
Directed by ROBERT MOORE

4: A Love Affair
'I got tangled up professionally and indeed personally in India in the days when India was striving for its independence.
I've fallen in love with it, and indeed out of love with it, j dozens of times.'
This week James Cameron 's Indian wife Moni joins him and questions some of the observations he has made in his films on India. Film editor DAVID LEE Executive producer ANTHONY ISAACS
Producer JENNY CROPPER
(Final programme: next Thursday) *CEEFAX SUBTITLES

A look ahead to some of the new season's highlights.

John Tusa. Peter Snow and Donald MacCormick with Olivia O'Leary and Jenni Murray present reports and interviews.

from Flushing Meadow, New York
MARTINA NAVRATILOVA is in such tremendous form this year that she has dominated women's tennis. Can anyone stop her winning yet another Grand Slam tournament?
Tonight's action is from the women's semi-finals.
Introduced by JOHN BARRETT Commentator DAN MASKELL
GERALD WILLIAMS , ANN JONES Television presentation CBS
Producer JOHNNIE WATHERSTON