Ontario

D Structures and Mechanisms

• D1 Relating Science and Technology to Our Changing World

  • D1.1 assess effects on society and the environment of strong and stable structures

  • D1.2 assess the environmental impact of structures built by various animals, including structures built by humans

• D2 Exploring and Understanding Concepts

  • D2.1 describe a structure as a supporting framework that holds a load and has a definite size, shape, and function, and identify structures in the natural environment and in the built environment

  • D2.2 demonstrate an understanding of the relationship between form and function for various structures

  • D2.3 identify the strength of a structure as its ability to support a load and describe ways to increase the strength of structures, including ways to increase the strength of different materials used to build them

  • D2.4 describe the stability of a structure as its ability to keep its shape, maintain balance, float, and/or stay fixed in one spot when a force is applied to the structure, and describe ways to improve a structure's stability

  • D2.5 identify properties of materials that need to be considered when building structures

    • Identify materials in objects (3-A.1)
    • Identify multiple materials in objects (3-A.2)

  • D2.6 describe ways in which different forces can affect the shape, balance, or position of structures

  • D2.7 explain the role of struts and ties in structures under load