Who I am
 I am John Chapin
 I teach Math and Computer Science at Freedom High School.
 My email address: john.chapin@lcps.org
 My twitter handle: @Math_CS_Teach
Goal:
 Not to teach you everything about Desmos, but to get you going in the right direction.
 1/3 Desmos Calculator, and 2/3’s Desmos Activity Builder
Desmos.com – Why Desmos?

It can get your students doing great math thinking:
 Modeling math
 Writing about math
 Talking about math
 Making predictions about math, construction arguments, critiquing others
 Making links between the algebra and the visual graph.
 Working collaboratively
 Really all 8 of the common core math standards.

Low floor and a high ceiling.

It has advanced features for:
 Calculus – Integrals and Functions
 Math Analysis – Polar Graphing, Trig, Summation
 Stats – Regression, Statistics, Tables
 Algebra – Functions, inequalities, domain restrictions, points

You can use it to create amazingly interactive lessons very quickly

But, they cannot use it on an AP test or an SOL.
 True, they need to know how to use a calculator. But, this is not an either/or question. Desmos, does not replace the calculator, but it will enhance your lesson.
Part I – Desmos Calculator
Features that I use:
 Show what the algebra looks like
 It always seems like I am saying, “What do you think it looks like? Let’s check it out on Desmos.”
 Double check homework
 Solving two equations and two unknowns
 Finding the x intercepts
 Verifying regression equations
 The colors and the ability to make a graph disappear.
 You can easily graph multiple equations and hide them and then make them reappear.
 Have them turn in the link instead of printing off the graph for their projects.
Jump in: Desmos Bingo
 Go to http://www.desmos.com and create a new account.
 If you have never heard of Desmos before, it is easy to learn
 If you think you know everything about Desmos…
 Go to http://learn.desmos.com/calculator
 Pick something you don’t know how to do and try it.
 Save your work!
Part II – Desmos Activity Builder
Features that I use:
 Use it to introduce a concept such as transformations
 Convert some of your paper investigations into a classroom activity.
 Use it to get your students to practice such
 Trig transformations
 Turn your paper investigations into interactive classroom activities.
Jump in: Be a student
 Go to student.desmos.com with Class Code – UX5H
Part III – Desmos Activity Builder – Build Your Own
Create your own:
 Go to teacher.desmos.com and log in
 Create a new one (click on the icon under “Your Custom Activities”)
 You can try to create the “Lines activity” from above.
 Or Copy one:
 Click on the red button “Browse all activities”
 Click on “Learn More”
 Click on “Duplicate this Activity” and start editing
 Click on “Start a new session” and invite someone to complete your activity
 Desmos “How To” Page
Steal 2
 Pick 2 that have already been created that you will use for next year.
Tweet
 Tweet to @Desmos the link to your very first activity!
Part IV – Polygraph – Fun way to build math vocabulary
 Example: https://teacher.desmos.com/polygraphparabolas
 Fun nonmath example: Disney Princesses
Other Links:
 Activity that my cohort first year teacher made:
 Rational Expressions: Vertical Asymptotes and Holes: https://teacher.desmos.com/activitybuilder/custom/57320315fb00011106773676
 First activity that I made:
 Trig Transformations:
 https://teacher.desmos.com/activitybuilder/custom/55b272951bb8635545de0138
 Calculator: How to Links from Desmos
 Activity Builder – How to links from Desmos
 Top 5 things to know about Desmos:
 Desmos Bingo – created by Desmos’ own Michael Fenton
 Stats Activity Builder example – Bob Lochel
 Daily Desmos – http://dailydesmos.com/
 Turn your Desmos into Gifs at Gifsmos
 Math Twitter Blogosphere
 https://exploremtbos.wordpress.com/
 Twitter Math Camp