11:45NumbertimeAddition and SubtractionAddition And Subtraction: Plus and MinusBBC Two Duration: 15 minutes Tue 13th Dec 2005, 11:45 on BBC Two Northern Ireland (Analogue)Addition and subtraction using animations, songs and sketches. The relationship between practical problem solving and written calculations is made clear.BrandNumbertimeSeriesNumbertime: Addition and Subtraction Source: BBC Online