Ms Gannon & Ms Browne's Third Class: Design a Bridge: We investigated bridges during Engineers Week. We examined different types of bridges and what bridges are made of. We examined bridges around the world such as our local William Dargan bridge in Dundrum and the tallest bridge in the world, Millau Viaduct in France, which is 336.4 metres tall and took three years to build. We also investigated the role of engineers and how important safety is and the upkeep of bridges. Working in our pods, we began to design our own bridges. We used books and paper to construct our bridges. We agreed the same height for the books and width apart so that it would be a fair test. We had two piles of books 18cm apart. Each group made a simple bridge using two piles of books and an A4 page. We tested its strength by adding books. Then we used two pieces of paper. We investigated ways to make the bridge stronger by folding the paper in different ways. We tested which bridges were stronger by testing which could hold the most books. Scott, Jan and Thomas C created the strongest bridge which could hold 5 books. We made arch and corrugated bridges and tested the strength. We linked maths by measuring the width and height of the books.