## Length

60-90 minutes, plus 30 minutes for an optional extension

## Curriculum Standards

- CCSS.ELA-LITERACY.RH.11-12.3

Evaluate various explanations for actions or events and determine which explanation best accords with textual evidence, acknowledging where the text leaves matters uncertain.

- CCSS.ELA-LITERACY.RH.11-12.4

Determine the meaning of words and phrases as they are used in a text, including analyzing how an author uses and refines the meaning of a key term over the course of a text (e.g., how Madison defines faction in Federalist No. 10).

- CCSS.ELA-LITERACY.RH.11-12.7

Integrate and evaluate multiple sources of information presented in diverse formats and media (e.g., visually, quantitatively, as well as in words) in order to address a question or solve a problem.

## Materials

## Instructions

- Begin by asking students if they like geometry. Why or why not?
- Allow students to share their responses and rationale.
- Then, explain that this lesson explores the history of geometry.
- Distribute the hard copies of the What is Geometry? lesson, then start the video and play it in its entirety.
- Now, shoulder pair students and ask them to address the following prompts:
- Define ''geometry'' in your own words.
- Which country is credited with the first written record of geometry?
- What geometrical calculations were found in Egypt?
- Where did the Pythagorean Theorem originate?
- Describe Euclidean geometry.
- Explain Rene Descartes' contribution to geometry.

- After all pairs finish, allow them to share their answers with the class.
- Now, distribute the lesson quiz and ask students to complete independently.
- Review the answers as a class.

## Activity

- Begin by asking students what they learned about geometry in the lesson.
- Now, explain that they are going to become geometry teachers in this activity.
- Divide the class into four groups and assign one of the following to each:
- Egyptian - Geometrical Shapes
- Greek - Pythagorean Theorem
- Greek - Euclidean Geometry
- French - Cartesian System

- Next, explain these instructions:
- Use smart technology to research your assigned geometrical concept, including its modern-day uses.
- Brainstorm with your team members on how to best teach your findings, which can include but are not limited to:
- history not noted in the lesson
- fun facts
- real-world application
- formulas
- calculations

- Now, create a 2-4-minute video of your findings.

- After all groups are finished, allow each to showcase their video.

## Extension

- Prior to completing this extension, find a teacher who will allow your student-groups to open a geometry unit by introducing the concept of geometry.
- Tell students this extension will involve them introducing geometry to another class.
- Explain the following instructions:
- Use the same groups in the activity, but trade topics with another group.
- Review the group's video.
- Practice explaining the information in the video.

- Afterwards, visit the other class and allow your student-groups to introduce geometry to the other class.