Who I am
- I am John Chapin
- I teach Math and Computer Science at Freedom High School.
- My email address: email@example.com
- My twitter handle: @
- 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
- Pick 2 that have already been created that you will use for next year.
- Tweet to @Desmos the link to your very first activity!
Part IV – Polygraph – Fun way to build math vocabulary
- Example: https://teacher.desmos.com/polygraph-parabolas
- Fun non-math example: Disney Princesses
- 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:
- 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