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TV: T is for...

Think of a Number etc.

THE MAN as far as TV science is concerned, JOHNNY BALL masterminded the THINK series as a cross between Carl Sagan and Max Miller, hosting a solid decade’s worth of one-man maths and science programmes with a precisely judged mix of clear, concise explanation and affably boobish ‘mad uncle’ tomfoolery. First lady of Children’s BBC CYNTHIA FELGATE oversaw original series THINK OF A NUMBER (1977-84), which took the form of a ‘light-hearted lecture’ on a general theme (the body, light, gravity, computers etc.) in front of an audience of keen but unrowdy T-shirted kids.

A lectern stood front and centre, but this was a mere serving suggestion, a reference point from which Ball would break loose and caper about, opening one of several cupboards concealed behind an eye-popping orange and brown mural (as was the style at the time), either to drag out an illustrative prop, or to open the door onto a sward of bright blue felt, onto which would be superimposed a pre-recorded skit. For instance, Ball would announce: “and in the fifteenth century, there was one man who understood all about astronomy. His name… was Galileo” and fling open a set of cupboard doors, inside which he would be seen, dressed as same in the appropriate set, launching into a wisecracking routine complete with cod-Italian accent (“A-where’s-a me tay-lescope?”) and hyperactive mannerisms. The overall impression may have been of history’s great scientific and mathematical geniuses being a bunch of hyperactive national stereotypes, but their achievements were explained effectively nonetheless. Point put across and signed off with a pun, ‘real’ Johnny would cheekily close the doors on his historical alter ego. “What a handsome chap!”

Other staple elements included a moment of ‘quiet wonderment’ where the lights would go down, some Jean Michel Jarre-esque music would fade in, and an elaborate model of a satellite or quartz crystal would be lowered from the ceiling, over which Johnny would drop the music hall stylings and simply wax lyrical, with breathlessly earnest enthusiasm. And, of course, there was the obligatory mind-reading magic trick (“It’s a trick! If you’d like to know how it’s done, write to me, Johnny Ball, Think of a Number, and I’ll tell you!”), usually involving a front row audience member as willing stooge. (“Round of applause! Not for me, for them!”) It’s instructive to note that Johnny was, perhaps uniquely in the annals of children’s television presenting, capable of remaining both authoritative and immensely likable despite constantly laughing at his own incredibly weak gags.

Spin-offs appeared thick and fast. From 1981, …Number alternated with THINK AGAIN, which was pretty much the same format but with the studio audience dispensed with, more in the way of filmed reports and full-blown EUREKA!-style historical sketches, and a more sober hi-tech bachelor pad set (complete with Commodore PET displaying the show’s logo on a shelf) for Johnny to be zanily enthusiastic in, which many impressionable kids assumed was his actual house, despite him clearly leaving via the front door at the end of each half-hour. Each edition was accompanied by a free Ball-penned duplicated factsheet available via an SAE to Wood Lane. THINK! BACKWARDS (1981) was something of an overlooked gem, a numerically themed daily series in the summer holidays counting down from ten to one over a week. Much play was had with reverse introductions (“Ball Johnny is name my, Backwards Think to again once welcome and hello!”) and the suspense was kept with a ‘teaser’ puzzle at the end of each edition, with the answer cunningly withheld until the start of the next. THINK! THIS WAY (1983) did the same, working its way round the points of the compass.

After the main franchise was wound up, Johnny found a series of further vehicles which retained the old spark, even if …Number veterans felt the glory days were beginning to fade a bit. THINK IT, DO IT (1986-7) was a sober, vocationally-oriented series looking at a different sphere of the world of work each week. The terrible puns were needed more than ever during a whole 25 minutes about becoming a dentist. (Sadly ‘mystic’ was not one of the career options considered.) KNOWHOW (1988) fatally sought to dilute the Ball magic with the addition of superfluous youthful stooges MARK SALTER and ANN DE CAIRES (no, us neither). Ball saw sense and jumped ship to Central Television for JOHNNY BALL REVEALS ALL (1989-94), wherein good old CLIVE DOIG allowed him to run riot among a studio audience once more, though this time in an unremarkable white studio limbo, and with a break-dancing Plasticine globe in the title sequence. Still, it was the same old Johnny underneath. And when that packed in, he maintained the lecture tours of schools, colleges and function rooms for longer than you’d have thought humanly possible. Whatever he may have done in recent years (and we’ll highlight the time he appeared on NEWSNIGHT captioned as “Maths Enthuser” and ignore the rest, if we may) the Think canon remains a mammoth achievement in getting school-weary kids off the sofa and thinking about silicon chips of a Friday afternoon. CONNECTIONS in short trousers, if you will.



  1. nugget

    January 24, 2010 at 12:53 am

    Johnny Ball is a tv legend. It’s a shame hes not on TV today. TV was so much better in the 80s *Sigh*.

  2. Funkadelic

    June 24, 2010 at 4:03 pm

    Actually the theme tune to Think Again was a rip off of Pulstar by Vangelis

  3. David Smith

    June 24, 2010 at 6:08 pm

    I don’t think it was a rip-off, I think it *was* Pulstar wasn’t it?

  4. gman

    June 25, 2010 at 3:42 pm

    Am I remembering incorrectly, or did they ruin the final series of Think of a Number by having a band in the studio? I’m sure they even managed to ruin the theme tune by making it all saxophoney

  5. John Connolly

    October 7, 2010 at 10:16 am

    About 18 months ago I booked Johnny Ball to do a show for trainee maths teachers – it was exactly like an episode of Think of a Number. He even did the mystic/me stick joke. I was in heaven. Then he started talking about global warming. Oh dear.

  6. iusemefingers

    April 3, 2013 at 1:33 pm

    I am going to be teaching some functional skills mathematics (ie basic stuff) very shortly and Johnny Ball is definitely the go-to man for tips on how to do it.

    Secondly, I can imagine him sitting there at TV Centre, at contract negotiation time. The boss asks Johnny how much money he would like for presenting a new series…. JB says ‘Think Of A Number’…. The boss writes a figure onto a scrap of paper, folds it over and hands hands it to Johnny- who reads, pauses, and then says ‘Think Again’!…

  7. Badey

    November 12, 2013 at 6:36 pm

    Johnny is a TV legend. He totally should be back on TV. He does tend to talk more about global warming these days but GOOD FOR HIM for having opinions and being passionate! He’s not just living off his previous fame, but genuinely wanting to challenge opinions and scientific ‘facts’ today. I’d love him to have another TV series, if only to shake everyone up a bit!

  8. richardpd

    August 20, 2019 at 11:11 pm

    I used to really like the titles For Think It Do It that showed Johnny Ball doing different jobs, including a whole orchestra.

    Knowhow was a mixed bag with one highlight being Mark Salter dissecting a piece of “plop” with a Stanley knife, which must has caused a few letters to Take 2 & Points Of View.

    Expo was another science / documentry series with Johnny Ball appearing at least once was the odd pan European Expo. What with The Lowdown & Ipso Facto were were spoilt for these shows at the turn of the 1990s.

  9. Karl Savage

    March 29, 2022 at 9:10 am

    I always remember the model of the bloke with ginormous eyes and hands, representing the extent to which the various senses are used. Funny what sticks in your head decades on isn’t it?

    • Richardpd

      March 29, 2022 at 11:02 pm

      I remember a picture of that man in one of my science text books at secondary school.

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