Exploring properties of rectangles and parallelograms using dynamic software
http://standards.nctm.org/document/eexamples/chap5/5.3/
A lesson plan for Grades 4–5 Mathematics
About this resource
- Appropriate grades
- 4–5
- Subjects
- mathematics (geometry)
- Provider
- National Council of Teachers of Mathematics
Legal
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Dynamic geometry software provides an environment in which students can explore geometric relationships and make and test conjectures. In this example, properties of rectangles and parallelograms are examined. The emphasis is on identifying what distinguishes a rectangle from a more general parallelogram.
E-Math Investigations are selected e-examples from the electronic version of the Principles and Standards of School Mathematics (PSSM). The e-examples are part of the electronic version of the PSSM document. Given their interactive nature and focused discussion tied to the PSSM document, the e-examples are natural companions to the i-Math investigations.
North Carolina Curriculum Alignment
Mathematics (2004)
Grade 4
- Goal 3: Geometry - The learner will recognize and use geometric properties and relationships.
- Objective 3.03: Identify, predict, and describe the results of transformations of plane figures.
- Reflections.
- Translations.
- Rotations.
- Objective 3.03: Identify, predict, and describe the results of transformations of plane figures.
Grade 5
- Goal 3: Geometry - The learner will understand and use properties and relationships of plane figures.
- Objective 3.01: Identify, define, describe, and accurately represent triangles, quadrilaterals, and other polygons.
