# Simona Riva

• ### Linear Functions and Rate of Change - work in progress

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Simona Riva

• ### Coordinate Geometry

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Simona Riva

• ### A Simple Exponential Model in the Time of Covid

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Simona Riva

• ### Pre-Algebra and Algebra

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Simona Riva

• ### Modeling with Functions

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Simona Riva

• ### Calculus

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Simona Riva

• ### dms → decimal angle converter

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Simona Riva

• ### Complex numbers: rectangular and polar form

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Simona Riva

• ### Trigonometry and Complex Numbers

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Simona Riva

• ### Lesson and Practice: The Law of Sines

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Simona Riva

• ### Lesson and Practice: Angles Between Two Lines and a Transversal

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Simona Riva

• ### Euclidean Geometry

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Simona Riva

• ### Lesson and Practice: Convex, Concave and Self-Intersecting Polygons

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Simona Riva

• ### The (mathematical) logic behind the scenes

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Simona Riva

• ### Counterexamples

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Simona Riva

• ### Explore! Napoleon's Theorem - Defining Hypothesis and Thesis

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Simona Riva

• ### Lesson: Construction of a triangle, given a side and two angles

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Simona Riva

• ### Explore! Il puzzle di Haberdasher - Haberdasher's puzzle

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Simona Riva

• ### Lesson and Practice: Special Points of Triangles

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Simona Riva

• ### Lesson: Pythagorean Theorem - a "proof without words"

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Simona Riva

• ### Lesson: Golden Triangle and Spiral

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Simona Riva

• ### Lesson & Practice: Matrices and Linear Transformations

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Simona Riva

• ### Lesson: Conics and Euclidean Invariants

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Simona Riva

• Activity

Simona Riva