Grades PreK-2:
The student visualizes and illustrates ways in which shapes can be
combined, subdivided and changed.
- understands basic concepts of spatial relationships, symmetry, and
reflections.
- uses objects to perform geometric transformations, including
flips,
slides, and turns.
Grades 3-5:
The student visualizes and illutrates ways in which shapes can be
combined, subdivided, and changed.
- understands the concepts of spatial relationships, symmetry,
reflections, congruency, and similarity
- predicts, illustrates, and verifies which figures could result from
a flip, slide, or
turn of a given figure.
Grades 6-8: The student visualizes and illustrates ways in
which shapes can be combined, subdivided, and changed.
- understands the geometric concepts of symmetry, reflections,
congruency, similarity,
perpendicularity, parallelism, and
transformations, including flips, slides, turns, and
enlargements.
- perdicts and verifies patterns involving tessellations (a covering
of a plane with congruent copies of the same pattern with no holes and no
overlaps, like floor tiles).
Also see NCTM
Standard 9: Geometry and Spatial Sense, Grades K - 4 and NCTM
Standard 12: Geometry, Grades 5 - 8.
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