Luke and Lily are on vacation from their preschool, and they are going to show you one of their many holiday videos! This time they visited London and got to see the famous London Bridge! Sadly it fell down, but Luke and Lily got to watch all the constructors reconstruct the London Bridge with a number of materials from iron to bread to even needles! Let’s sit down and enjoy this 3D animated video of your preschool friends Luke and Lily singing the ‘London Bridge’ nursery rhyme as the bridge keeps falling down. Once this children rhyme finishes, can you tell us which material would be best to reconstruct the bridge?