Numberjacks, aimed at four- and five-year-olds, is an engaging, entertaining comedy adventure series in which animated numbers are superheroes solving mathematical problems in the real world, with input from real children. The programmes help the viewer develop early maths skills, knowledge and understanding. The series combines live action, shot on location in the UK, and 3D computer-generated animation. 4 is in the Cosy Room taking photos of 1 and 0. A girl has a hundred or so beads to make a necklace but then has only ten, then one. A boy has similar problems with building bricks, as does a woman with gloves. 6 flies out, and the Numberjacks work out that the Numbertaker is taking tens, hundreds and thousands. They make the numbers with 11, 0 and the photos of 0. First one agent, then ten, then a hundred with 1000 fingers help 6 deliver Brain Gain, and all is well.