The original documentary following ten four-year-olds as they meet at nursery
The four-year-olds take their first steps towards independence, and learn about friendship
The children are joined by new faces, including Taylor, who tries to befriend the girls
This episode meets 12 five-year-olds. Alfie and George can't agree what the sun's made of.
Sienna captures Arthur's heart. Alfie makes a breakthrough in a painting competition.
Topics from race to religion, love and death are up for discussion among the six-year-olds
Caitlyn and new girl Leila bond when they try to cover up a cake mishap
Children from the original programme and the series team up for their own Nativity play
This episode examines differences between boys' and girls' behaviour, with a series of challenges that explore everything from levels of risk-taking to tactfulness.
Noah is obsessed with dinosaurs and can accurately name dozens of the reptiles. But when given the opportunity to meet a life-size dinosaur, can Noah overcome his fear?
Self-proclaimed geezer Harper, who already has several girlfriends, has his eye on confident new girl Ava. Rory's had a difficult start at the nursery; can he find a friend to share his love of sheep?
The Secret Life of 5 Year Olds returns for a one-off special, and this time it's going on holiday! The series that offers viewers a fascinating insight into the lives of our little ones has joined forces with travel company Thomas Cook. Some familiar faces from the previous series are jetting off to the Sunwing family resort in Cyprus, and they're taking their families along too. Once more the programme provides the opportunity to observe how a group of four, five and six-year-olds interact and play together but this time against the backdrop of sun, sea and souvlaki. The children sample everything that a holiday abroad offers: the frenzied excitement of packing and flying, the adrenaline rush of the water park and the first taste of exotic delicacies.
The award-winning series returns for a one-off special with an all-girl cast, revealing how girls see themselves, and the role of women, on the centenary of women's suffrage.
A special episode revealing how children learn the difference between right and wrong. The children decide if it's ever okay to cheat, and try to reunite a divided group.
The children are given the chance to wield power, but what sort of leaders will they choose to be? And when three adorable but excitable puppies visit the nursery, can Luke and Ella take charge?
The award-winning documentary returns with an all-new cast of children, who are getting to grips with the classroom of the future. The programme aims to find out how tablets, robots and other gadgets affect how they play and what modern technology is doing to the brains and bodies of these digital natives. Gadget-obsessed Arthur gets the opportunity to meet a cutting-edge robot, while Iris, Na'Shae and Kiera are each given their own tablet to use. Will it have an impact on the girls' friendship?
The fly-on-the-playroom wall documentary focuses on relationships, revealing how the four-year-olds form friendships, rivalries and romances with each other. Arthur and Iris decide to be boyfriend and girlfriend - only for Frankie to also show an interest in Iris. Best friends Na'Shae and Penny fall out over a hair bobble, and a five-metre climbing wall arrives at the nursery. Is anyone brave enough to make it all the way to the top?
The award-winning documentary moves on to a new, older group as the nursery opens its doors to an international class of children from across Britain and around the world. Harlo has travelled from Los Angeles but what do the others make of his American ways - in particular his love of guns? Reilly, whose mother is from South America, quickly develops a crush on Harlo. But will her feelings be reciprocated? Meanwhile, Syrian refugee Omar has a tough time making friends in the playground, and soon the others gang up on him.
The scientists explore how the children are affected by experiences of success and failure. There are tears in the classroom when Vinnie loses a game, but how do the rest of the children react to his behaviour? The friends discuss their heroes, prompting Samuel to share memories of his father, who has recently died. And when a seven-foot robot arrives in the garden, the youngsters have a challenge trying to work out how to switch it on.
