My attempt to keep track of all the goodies that the internet has to offer…

**Algebra I**

Mr. Vaudrey has a nice idea about an equation solving activity

**Geometry**

A Nice intro Activity to Area and Perimeter from Illustrative Math

Tina’s Parallel Lines and Transversals Activity

Kate Nowak’s Intro to Trig Ratios

Nat offers a nice Similarity exercise with coffee cups

A great area problem tying together a bunch of shapes

Jennifer Wilson’s Intro To Trig Ratios using TI-Inspire

Tim Erickson’s Home plate Area Mystery

Sam Shah on Definitions in Geometry

Sam Shah’s Semi-Circle Activity

Don Steward presents some great trig problems

A fun exploration of Conditionals From Pam Wilson

An Intro to Proof Puzzle Activity by John O’Malley

Timon Piccini with a nice Volume/Surface Area 3-Act

A terrific wiki resource for Geometry activities

Her Mathness’ Curriculum Outline

Always-Sometimes-Never for Quadrilterals

Dance Dance Transversal from the algebrainiac

Sam Shah’s PCMI Inverse, Converse, etc

An Activity Exploring Polygon Angles from Do We Understand

A GeoGebra Right Triangle Activity

Lisabej worksheets on Discovering Trig Ratios

Tina’s Trig Ratio Intro Using GeoGebra

Mathy McMatherson’s Geometry Problem Generator

A terrific approach to the two Column Proof from Mrs. Reilly

Another hit from Mrs. Reilly (by way of Fawn Nguyen) – A Scale Factor Activity

A terrific circular arc problem from GoGeometry

Kate Nowak Argues for Transformational Geometry Proofs

Another nice take on proofs in HS math

Zach Creswell on SSA ambiguity

A Great Data Gathering Project Applying Similarity

The 1st Edition of My Geometry Text

**Algebra II**

Robert Kaplinsky’s In n Out Linear Systems Activity

James Cleveland’s Algebra Taboo Cards

A lovely Factoring Post by Meg

An absolute value graph activity

Miah World’s Consecutive Sums Lesson

PiMan has a lovely quadratic discussion here

A lovely exploration of sequences/series from Miah World

Michael Fenton’s Approach to Rational Exponents

Mathy Beagle has a great idea for function composition

** Precalculus**

Lovely radian applet share by Sam Shah

A nice approach to the IVT from Mathy Beagle

A Fantastic Approach to Complex Numbers from Michael Pershan and Max Ray

A great Ferris Wheel Activity with Handouts from The Agony and dx/dt

Ben Orlin’s Explanation of Perms/Combs

A lovely vector addition applet

Don Steward’s Great Trig Problems (also in Geometry list)

A nice approach to the introduction of limits from Epsilon-Delta

John and Betty’s Journey into Imaginary Numbers

** Statistics**

The great StatsMonkey Site by Jason Molesky

A fun applet for confidence intervals

One of my favorite graphics ever – all 100 meter runners in the modern olympics in one display

**Calculus**

Inflection via Infection from Bowman Dickson

Michael Fenton’s use of Desmos for Linear Approximations

A terrific graph visualizer for func/deriv/integral

A terrific end of year project idea from poliquinmath

Sam Shah’s Power Rule Approach

Tim Erickson on the Calculus of Mercator Maps

Another Slope Field / Euler Table Link

A lovely vector addition applet

**Interesting TED Talks and other videos**

Malke Rosenfeld’s talk on the intersections math ed and dance

**Teacher PD Ideas**

On the benefits of teachers watching videos of classroom action

David Wees discusses what an effective math classroom looks like

**Miscellaneous Fun**

A great number puzzle for 2014

A useful resource to help student with TI skills

Some work I did in my doc student days – a lit review on arts integration

A promising set of Problem-Based Learning Activities

**Pedagogy**

Frank Nochese on the power of whiteboards

Ben Orlin – Do You Have a Math ceiling?

More whiteboard wisdom from John Scammell

On Exploring/Changing Mindsets in the Classroom

**On Technology in Education**

Will you create a set of links on this page by topic? That’s what I tried and so far it is working for me.

Can’t wait to see what treasures you record here!

That is my hope. I have some figuring out to do here…

Wow, that’s super cool, I am impressed by the amount of materials you’ve collected.