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## The Hidden Beauty of Complex Numbers

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## Simple Mathematical Model for Designing a Corbeled Arch

This mathematical method can be used to find the size and shape of the bricks necessary to create a corbeled arch of nearly any shape. This method focuses on finding the minimum lengths of the bricks necessary to create a mathematically stable arch subject to certain constraints.

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## Teaching Angle as Turn Using a Code.org Lesson

Elementary school students use physical manipulatives (e.g., pattern blocks) to make sense of the geometry and measurement ideas in a Code.org block-based programming lesson.

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## How Big Is a Leaf? Mathematical Modeling Through STEM Inquiry

Grade 4 students engage in problem solving through inquiry in an agricultural science context.

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## Give Plants an Inch; They’ll Take a Yard

A real-world integrated activity allows middle school students to design a scale drawing for a garden at their school.

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## Golden Circles

An artist uses graphic tools and circles to illuminate the illusive concept of the golden ratio.

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## The Mathematical Wonders of 3D Printing

We share how engaging in the mathematical process of 3D printing captured and elevated our interest in discovering the wonder, joy, and beauty of mathematics in the world around us.

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## Looking for Math in All the Right Places!

This article describes how fortuitous mathematical moments should be noticed, encouraged, embraced, and capitalized upon.

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## A Radian Angle Measure and Light Reflection Activity

During a Desmos activity, students adjust the measures of angles in radians to reposition a laser and a mirror so the beam passes through three stationary targets. The Radian Lasers activity can be extended to simulate project-based learning.

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## Math Chat Opportunities Abound!

This article describes how fortuitous mathematical moments should be noticed, encouraged, embraced, and capitalized upon.