MAFS.1.G.1.1 Distinguish between defining attributes (e.g., triangles are closed and three-sided) versus non-defining attributes (e.g., color, orientation, overall size); build and draw shapes to possess defining attributes.

Cognitive Complexity Level: 1-Recall

[divider] [/divider] Students are able to… 

  • Draw and build 2-dimensional shapes.
  • Describe attributes of shapes by justifying shape names based on its defining characteristics.
  • Classify shapes based on attributes.

[divider] [/divider] Students are able to…because teachers:

  • Use precise vocabulary such as: shape, two-dimensional, three-dimensional, rectangle, square, trapezoid, triangle, cube, cone, cylinder, open, closed, sides, vertices, edges, and faces.
  • Create scenarios which require students to classify shapes based on attributes.
  • Provide opportunities for students to build and draw shapes with specific attributes.

 [divider] [/divider] Questions to ask students:

  • Ask:  Can you draw a two-dimensional shape? Describe the shape you drew using 2 attributes.
    • Sample answer that indicates understanding: Student correctly draws a two-dimensional shape and uses precise vocabulary to describe the attributes.  For example, student draws a triangle and describes a closed shape with  3 sides.
  • Ask: Point to different two-dimensional shapes and ask students to describe the attributes.
    • Sample answer that indicates understanding: Student should use vocabulary such as the name of the shape, number of sides, closed figure, angles or corners to describe the shape.

[divider] [/divider] Additional Resources:

Additional in depth content knowledge

Video: Khan Academy – Shapes

https://www.khanacademy.org/math/basic-geo/basic-geometry-shapes/basic-geo-properties-shapes/v/recognizing-shapes

[divider] [/divider] Sample Formative Assessment Tasks:

[divider] [/divider] Resources/Tasks to Support Your Child at Home:

  • Task: Students can create their own shapes based on defining attributes using online Geoboards. Give your child clues based on attributes such as “I’m thinking of a shape with 4 sides of the same length and 4 vertices.”
  • Online Resource – https://www.mathlearningcenter.org/resources/apps/geoboard
  • Virtual Manipulates – http://goo.gl/u7R4aP – Attribute Blocks – This interactive manipulative allows you to sort shapes based on a given attribute.
  • Name My Shape – Describe attributes of a shape while partner tries to name/draw the shape.
  • Task:  Give your child popsicle sticks or pipe cleaners.  Encourage them to build rectangles, squares, trapezoids and triangles.  Have them describe how they know the shape is a rectangle, square, trapezoid or triangle using the defining attributes.
  • Task:  Give your child toothpicks and marshmallows.  Encourage them to build a cube.