Ontario

Shapes

• 17 describe, sort, classify, build, and compare two-dimensional shapes and three-dimensional figures, and describe the location and movement of objects through investigation

  • 17.1 explore, sort, and compare the attributes (e.g., reflective symmetry) and the properties (e.g., number of faces) of traditional and non-traditional two-dimensional shapes and three-dimensional figures (e.g., when sorting and comparing a variety of triangles: notice similarities in number of sides, differences in side lengths, sizes of angles, sizes of the triangles themselves; see smaller triangles in a larger triangle)

    • Classify objects by two-dimensional shape (K-A.1)
    • Sort objects by two-dimensional shape (K-A.2)
    • Classify objects by three-dimensional shape (K-A.3)
    • Sort objects by three-dimensional shape (K-A.4)

  • 17.2 communicate an understanding of basic spatial relationships (e.g., use terms such as "above/below", "in/out", "forward/backward"; use visualization, perspective, and movements [flips/reflections, slides/translations, and turns/rotations]) in their conversations and play, in their predictions and visualizations, and during transitions and routines

  • 17.3 investigate and explain the relationship between two-dimensional shapes and three-dimensional figures in objects they have made (e.g., explain that the flat surface of a cube is a square)