The children had a game to play at the start of the lesson, where they had an animal on their back and they had to ask questions to work out what the animal was. Then, they had to decide if their animal was nocturnal, then if it was a predator, then what classification it is. We then looked at gestation periods and the children made a prediction on which animals had the shortest gestation. They learnt that the longest gestation period was for animals that are the biggest and the shorter gestation period was for smaller animals.