# Paper Portal Geometry Lesson

Paper Portal is a geometry lesson that begins with a fascinating challenge: Can students cut a hole in a single sheet of 8 1/2″ x 11″ paper that is big enough to walk through? After students are shown the solution to this challenge the remainder of the lesson involves an investigation of the different polygon and circle areas that may be found using a fixed perimeter (the paper portal).

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Lesson Description:  Paper Portal is a geometry lesson that begins with a fascinating challenge: Can students cut a hole in a single sheet of 8 1/2″ x 11″ paper that is big enough to walk through? After students are shown the solution to this challenge, the remainder of the lesson involves an investigation of the different polygon and circle areas that may be found using a fixed perimeter (the paper portal).

Math Content:  Perimeter, Area, Measurement, Comparing the Areas of Different Figures with a Fixed Perimeter, Writing Perimeter and Area Equations with Variables

Time Required:  1 Class Period

Paper Portal Geometry Lesson includes:

• 1 Paper Portal Challenge Teacher Notes page
• 1 Paper Portal Activity Template
• 1 Paper Portal Perimeter and Area worksheet
• 1 Paper Portal Perimeter and Area worksheet Answer Key
• 2 Paper Portal Teacher Tips pages
• 1 Paper Portal Cover Page

Materials Needed:  scissors (1 per group), tape measures (1 per group)