"A Gem of a Geo-dome"

6, 7, 8

Learners will construct a geo-dome that displays information illustrating statistics, vocabulary and examples of philanthropy during World War II (Holocaust).

Lesson Rating 
PrintFour Fifty-Minute Class Periods

The learner will:

  • construct an equilateral and isosceles triangle with compass and ruler.
  • construct a scale model of the given geo-dome.
  • calculate the surface area of the geo-dome.
  • illustrate the information gathered about the Holocaust period by use of pictures, statistics, vocabulary, and descriptions on the geo-dome.
  • give an oral presentation explaining the information presented on the geo-dome.
  • Five sheets of poster board (11 x 14 in)
  • Scissors
  • Ruler
  • Compass
  • Pencil, glue stick
  • Rubric for Geo-dome (Handout One)
  • Directions (http://www.pitsco.com/PDF/dome.pdf )
  • Illustrations depicting information gathered from Lessons One-Three or drawings reflective of their feelings about Holocaust.
Home Connection 

Interactive Parent / Student Homework: The learners will write a description of their geodome to their parent, using their math vocabulary to demonstrate their understanding of the associated concepts.

Build a Geodesic Dome http://hilaroad.com/camp/projects/dome/dome.html Accessed August 2, 2010.
How to Build a Paper Geodesic Dome Model. https://geo-dome.co.uk/article.asp?uname=modelbuild Accessed August 2, 2010.
How to Build a Geodesic Dome Model. https://www.thoughtco.com/build-a-geodesic-dome-model-177809 Accessed August 2, 2010.
PBS Activity. Geodesic Dome Handout. http://www.pbs.org/wgbh/buildingbig/educator/act_geodesic_ho.html Accessed August 2, 2010.


  1. Anticipatory Set: Ask learners, "What is a dome?" Ask them what buildings they can identify as domes or contain domes. They should relate names of a stadium, US Capitol, or state capitol buildings. Expand that concept to a geo-dome. Learners will create a visual representation of the information gathered by constructing a geo-dome that will be covered with facts and pictures obtained from research and readings of this unit.

  2. Use a compass and ruler to construct an equilateral triangle on cardboard with congruent segments measuring 3 inches. This will be template "E."

  3. Use a compass and ruler to construct an isosceles triangle on cardboard with congruent segments measuring 2-5/8 inches, and a third side measuring 3 inches. This will be template "I."

  4. Trace templates I and E on the poster board to recreate the dome section pattern.

  5. Complete five of these sections on poster board.

  6. Cover each section with statistics, words, and pictures that convey the information gathered from class discussions, questionnaires, and reading selection (The Diary of Anne Frank), the play and information about the Warsaw Ghetto.

  7. Construct the geo-dome by fitting the five sections together. (See Bibliographical References for instructions)

  8. Use templates I and E to calculate the surface area of the geo-dome.

  9. Give an oral presentation to the class and audience in the school library or media center explaining any vocabulary, statistics and pictures displayed on the geo-dome.


A rubric will be used to grade the geo-dome. (Handout One) Learners will be evaluated on the actual construction of the dome and the quality of the information used to cover the geo-dome. The mathematical component of constructing equilateral and isosceles triangles, calculating surface area, as well as reproducing a scale model will be graded through classroom observation. An instructor-designed test may be administered to determine level of mastery.

Cross Curriculum 

Learners will display the geo-dome with accompanying posters describing to the viewers how it was planned and constructed. Projects will be presented and displayed in the school library during the presentation of the philanthropy manual prepared in Lesson Five: "Who Wants to be an Octogenarian?" and Lesson Six: Philanthropy, A Timeline for Us.

Philanthropy Framework

  1. Strand PHIL.I Definitions of Philanthropy
    1. Standard DP 01. Define Philanthropy
      1. Benchmark MS.4 Give examples of how individuals have helped others.
  2. Strand PHIL.II Philanthropy and Civil Society
    1. Standard PCS 01. Self, citizenship, and society
      1. Benchmark MS.2 Discuss why some animals and humans will sacrifice for the benefit of unknown others.
      2. Benchmark MS.4 Describe the characteristics of someone who helps others.
  3. Strand PHIL.III Philanthropy and the Individual
    1. Standard PI 01. Reasons for Individual Philanthropy
      1. Benchmark MS.9 Identify pro-social behavior in different cultures and traditions.
  4. Strand PHIL.IV Volunteering and Service
    1. Standard VS 02. Service and Learning
      1. Benchmark MS.1 Select a service project based on interests, abilities and research.
    2. Standard VS 03. Providing Service
      1. Benchmark MS.3 Describe the task and the student role.