There are structures all around us.
Structures are not just things made by people. You can find structures in nature as well.
Structures can be man-made or natural. Structures are important for people and animals and so they must be strong and stable.
Discussion questions: Can structures with different shapes have the same strength and stability? Study the materials used to build these structures. How did the material used contribute to its strength and stability? Does the structure help meet its needs?