9.38 Countdown
As Long as a Piece of String .
10.0 Merry-go-Round this week combs the newspapers for stories. Series producer MIKE HARRISON
10.23 Maths Workshop: Stage 1 Circles and Spirals

11.0 The Electric Company: 5
Reading series from the Children's Television Workshop, New York. Presented for the BBC by Felicity Kinross

11.22 Music Time: Programme 15 .

11.45 General Studies: The First Signs of Washoe: part 1
An American experiment in communicating with chimpanzees through sign-language apparently reveals their ability to learn 'language' and understand abstract concepts. Narrator Ian Holm
Written and produced by Simon Campbell-Jones

Weather MICHAEL FISH

with Bob Langley , Donny MacLeod David Seymour , Marian Foster and Jan Leeming including Tune in to Tap with Karen Rabinowitz

2.1 Words and Pictures
The Lion who Wished
2.18 British Social History The Younger Citizen
.
2.40 Going to Work
A Chance to Work

with Anna Massey
The Animal Family by RANDALL JARRELL (three parts) The hunter lived alone in his log cabin where the forest ran down to the sea. Then, one night, he heard the mermaid singing. Today: The Hunter and the Mermaid

with John Noakes, Peter Purves, Lesley Judd
An important day for Buttons, Blue Peter's third guide dog, as she joins her new owner.

by HELEN CRESSWELL
Lizzie Dripping Says Goodbye
Producer ANGELA BEECHING
Director PAUL STONE

with Angela Rippon ; Weatherman

Britain's most popular current affairs programme. Tonight's features include Pigeonhole with Richard Stilgoe reflecting ideas and opinions from the Nationwide postbag.
Producers ANDREW TAUSSIG
GORBON WATTS , HUGH WILLIAMS
Deputy editor STUART WILKINSON
Editor JOHN GAU

by Paul Wheeler

Ross is appalled when Jinny Carter tells him of the agony her husband is suffering in Launceston Gaol.

(Repeat)

Reporting on the stories that matter and asking the questions that need to be asked.
Introduced by David Dimbleby
The Panorama correspondents at home and abroad are
MICHAEL COCKERELL
RICHARD LINDLEY , TOM MANGOLD
JULIAN MOUNTER
JULIAN PETTIFER
Assistant editor DAVID HARRISON
Editor PETER PAGNAMENTA

with Angela Rippon and the BBC's reporters and correspondents around the world and Weather

A special feature film introducing a new series starring
David Birney as Frank Serpico the undercover cop who campaigns against crime and corruption both on the city streets - and inside New York's Police Department with Tom Atkins as Lieutenant Sullivan
A New York cop can make enough enemies among professional criminals without trying to expose crooked policemen. And when Frank Serpico tries to do both, he is playing a dangerous game.
(Serpico, a new series starring David Birney , begins next Saturday with ' Country Boy ')