We have had great fun exploring structures, especially thinking about what makes a structure stable. We used construction materials to build our own models and discovered that cylinders are particularly strong structures. We found many manmade structures like climbing frames, slides, tables and chairs used cylinders. To find out why, we created our own cylinders and discovered that they could hold many things. One cardboard cylinder was strong enough to hold a table tray! Our next challenge is to use what we have learned to design our own chair for a bear and then create it out of card.