Think of a NumberSeries 1Episode 3: MaterialsBBC One Duration: 25 minutesFirst broadcast: Wed 26th Apr 1978, 17:15 on BBC One WestLatest broadcast: Wed 11th Apr 1979, 16:40 on BBC One WalesJohnny Ball looks at family trees, boomerangs and nylon, and turns a fossil back into a dinosaur!GenresChildren'sFactualBrandThink of a NumberSeriesThink of a Number: Series 1 Source: BBC Online