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K–12 teaching and learning · from the UNC School of Education

Mathematics — Grade 5

Goal 3, Objective 3.02

Goal 3

Geometry - The learner will understand and use properties and relationships of plane figures.

Objective 3.02

Make and test conjectures about polygons involving:

  • Sum of the measures of interior angles.
  • Lengths of sides and diagonals.
  • Parallelism and perpendicularity of sides and diagonals.

Resources aligned to this objective

Records 1–9 of 9 displayed.

Origami Geometry
Students apply their knowledge of geometric terms to follow directions while folding an origami sculpture. Students then solve math problems which relate to the project with follow-up discussions about the project relating to geometric terms such as symmetry, faces, edges, square, triangle, plane, etc.
Format: lesson plan (grade 3–5 Mathematics)
By Cherl Hollada, Libby Morrison, Michelle Kaczynski, and Susan Pope.

Lesson plans on the web

Constructing a three-dimensional model
In this lesson, one of a multi-part unit from Illuminations, students build a three-dimensional model of a clubhouse from two-dimensional blueprints designed in an earlier lesson. (Learn more)
Format: lesson plan (grade 3–5 Mathematics)
Provider: National Council of Teachers of Mathematics
How many triangles can you construct?
In this lesson, one of a multi-part unit from Illuminations, students identify patterns in a geometrical figure, build a foundation for the understanding of fractals, and develop experiments to test hypotheses. (Learn more)
Format: lesson plan (grade 3–5 Mathematics)
Provider: National Council of Teachers of Mathematics
Learning about length, perimeter, area, and volume of similar objects using interactive figures: Side length and area of similar figures
This two-part example illustrates how students can learn about the length, perimeter, area, and volume of similar objects using dynamic figures. (Learn more)
Format: lesson plan (grade 4–8 Mathematics)
Provider: National Council of Teachers of Mathematics
Mathematics at the mall: Unit overview
Students participate in activities in which they develop number sense in and around the shopping mall. (Learn more)
Format: lesson plan (grade 4–8 Mathematics)
Provider: National Council of Teachers of Mathematics
Parking at the Mall
Students develop number sense in and around the shopping mall. (Learn more)
Format: lesson plan (grade 4–5 Mathematics)
Provider: National Council of Teachers of Mathematics
Planning a road trip
This lesson reviews latitude and longitude and asks students to find the latitude and longitude for several United States cities. (Learn more)
Format: lesson plan (grade 3–5 Social Studies and Mathematics)
Provider: National Geographic
Rectangles and parallelograms
In this lesson, from Illuminations, students use dynamic software to examine the properties of rectangles and parallelograms and then identify what distinguishes a rectangle from a more general parallelogram. (Learn more)
Format: lesson plan (grade 3 Mathematics)
Provider: National Council of Teachers of Mathematics
What's important about triangles?
In this lesson, one of a multi-part unit from Illuminations, students discover that it is not possible to construct some triangles from given lengths and that the sum of the lengths of any two sides must be greater than the length of the third side. (Learn more)
Format: lesson plan (grade 4–5 Mathematics)
Provider: National Council of Teachers of Mathematics