Christian Lawson-Perfect @christianp

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**Karen Campe** @KarenCampe · 3d

New blog post! "Go For Geometry! Episode 6: Quadrilaterals"
Using technology (all platforms) to make sense of this family of shapes.
#MTBoS #iTeachMath #T3Learns #Geometry
#ClassroomMath #MathEd #MathsEdChat

https://karendcampe.wordpress.com/2025/04/17/go-for-geometry-6/

Reflections and Tangents · 3dGo For Geometry! 6Using Dynamic Technology to Build Understanding ◊ Episode 6: Quadrilaterals ◊ In Episode 5, we took a brief look at trapezoids, and that got me thinking about the family of quadrilaterals: all the …

**Karen Campe** @KarenCampe · Apr 7

Apr 7

Karen Campe @KarenCampe

New blog post! "Mental Math Monday" summarizing last week's question and many different calculation strategies.
#MTBoS #iTeachMath #T3Learns #MathChat #MentalMathMonday #MathStratChat #ElemMathChat #MathSky #MathsToday #ClassroomMath

Thanks to Howie Hua!!!

https://karendcampe.wordpress.com/2025/04/07/mental-math-monday/

Reflections and Tangents · Apr 7Mental Math MondayLast week, I was the guest questioner for Howie Hua’s Mental Math Monday prompt that he posts on his social media accounts1. I asked, “How would you calculate 15 x 22?” and plenty of folks shared t…

**Karen Campe** @KarenCampe · Apr 2

Apr 2

Karen Campe @KarenCampe

The April Calendar of problems is here! Do some #ProblemSolving with your students (or by yourself) & share your thinking!

Plus BONUS article "Do It Right" on implementing technology for success.
#iTeachMath #MTBoS #MathsToday #RecreationalMath #MathEd #MathsEdChat #ClassroomMath

https://karendcampe.wordpress.com/2025/04/01/april-calendar-problems-3/

Reflections and Tangents · Apr 2April Calendar ProblemsWelcome to April, and I hope you’re ready to spring into some problem solving! Here is the April 2011 Calendar of Problems from 14 years ago for you and your students to try. I have the last …

**Karen Campe** @KarenCampe · Apr 1

Apr 1

Karen Campe @KarenCampe

Solutions for the March Calendar of Problems are posted!
https://karendcampe.wordpress.com/2025/03/01/march-calendar-problems-3/
Sorry, I'm a day behind, but the April calendar will be up by tomorrow (no fooling!)
#ProblemSolving #RecreationalMath #iTeachMath #MTBoS #T3Learns #MathEd #MathsEdChat #ClassroomMath

Reflections and Tangents · Mar 1March Calendar ProblemsWow it is March, and spring is on the way! March is among my favorite months, since it has its own math holiday (Pi Day*). But don’t limit your recreational math to 3-14; you can have math pr…

**Karen Campe** @KarenCampe · Mar 17

Mar 17

Karen Campe @KarenCampe

New blog post! "Marvelous Midsegments" Go For Geometry! Episode 5.
Activities exploring on all technology platforms: Desmos, GeoGebra & TI calculators.
Taking the scenic route
#geometry #MTBoS #iTeachMath #ClassroomMath #MathEd #MathsEdChat

https://karendcampe.wordpress.com/2025/03/16/go-for-geometry-5/

Reflections and Tangents · Mar 17Go For Geometry! 5Using Dynamic Technology to Build Understanding ◊ Episode 5: Marvelous Midsegments ◊ Welcome to Episode 5, where we take the scenic route in our geometry journey. What happens when we find midpoint…

**Karen Campe** @KarenCampe · Mar 9

Mar 9

Karen Campe @KarenCampe

New Blog Post! "Go For Geometry! Episode 4: Triangle Angles"
See how to use numerical data w/technology to support student understanding (on all platforms: Desmos GeoGebra TI Calculators)
#geometry #MTBoS #iTeachMath #T3Learns #MathEd #MathsEdChat #ClassroomMath

https://karendcampe.wordpress.com/2025/03/09/go-for-geometry-4/

Reflections and Tangents · Mar 9Go For Geometry! 4Using Dynamic Technology to Build Understanding ◊ Episode 4: Triangle Angles ◊ This is one of the first dynamic geometry activities I ever did with my students. The topic comes early in the school …

**Karen Campe** @KarenCampe · Mar 2

Mar 2

Karen Campe @KarenCampe

March Calendar of Problems is posted! Try some #ProblemSolving #RecreationalMath & share thoughts here or on the blog.

Plus BONUS content article: "Math Habits of Mind" Enjoy!
Consider subscribing so never miss a post.
#MTBoS #iTeachMath #ClassroomMath #MathEd #MathsEdChat

https://karendcampe.wordpress.com/2025/03/01/march-calendar-problems-3/

**Karen Campe** @KarenCampe · Feb 25

Feb 25

Karen Campe @KarenCampe

New Blog Post! "Go For Geometry Episode 3: Points of Concurrency"
See how this technology exploration can bring challenging math to all levels of students #equity #geometry w/all tech platforms

#MTBoS #iTeachMath #ClassroomMath #MathEd #MathsEdChat

https://karendcampe.wordpress.com/2025/02/25/go-for-geometry-3/

Reflections and Tangents · Feb 25Go For Geometry! 3Using Dynamic Technology to Build Understanding ◊ Episode 3: Points of Concurrency ◊ Perhaps by now you’ve gotten a taste of the power of Dynamic Geometry (DG) systems from the previous two posts. …

**Karen Campe** @KarenCampe · Feb 10 *

Feb 10 *

Karen Campe @KarenCampe

Take advantage of valentines candy to explore exponential models with your students!
Check out "I Candy Math" for Valentine's Day this week!
#MTBoS #iTeachMath #ClassroomMath #MathEd #MathsEdChat
https://karendcampe.wordpress.com/2022/02/10/i-%e2%9d%a4%ef%b8%8f-candy-math/

Reflections and Tangents · Feb 11, 2022I ❤️ Candy Math!It’s that time of year again, when Valentine’s Day candy is all over store shelves. Grab some “conversation hearts” – SweeTart™ Hearts are my favorite – and explore exponential models with your stu…

**Karen Campe** @KarenCampe · Feb 6

Feb 6

Karen Campe @KarenCampe

It's almost "e day"!!! (2.7)

Get ready for Friday with this blog post: "Exploring e" gives some ideas for learning about the Euler number in math class.

#MTBoS #iTeachMath #ClassroomMath #MathEd #MathsEdChat #calculus #precalculus

https://karendcampe.wordpress.com/2024/02/07/exploring-e/

Reflections and Tangents · Feb 7, 2024Exploring eImage credit: MathIsFun.com Sarah (@mathequalslove)1 tells me that today, February 7, is “e day” because the date is 2-7 in month-day order. You might recall that e is a number sometimes called the…

**Karen Campe** @KarenCampe · Feb 2

Feb 2

Karen Campe @KarenCampe

February Calendar of Problems is posted! Try some #ProblemSolving #RecreationalMath & share thoughts here or on the blog.

Plus BONUS content article: "13 Rules That Expire" Enjoy!
Consider subscribing so never miss a post.
#MTBoS #iTeachMath #ClassroomMath #MathEd #MathsEdChat

https://karendcampe.wordpress.com/2025/02/01/february-calendar-problems-3/

Reflections and Tangents · Feb 1February Calendar ProblemsFebruary is here, and even though this month is short, there’s plenty of time for math problem solving and other fun! Besides Valentine’s Day* and E Day**, here is the February 1995 Cal…

**Karen Campe** @KarenCampe · Jan 31

Jan 31

Karen Campe @KarenCampe

The solutions are posted for the January Calendar of #ProblemSolving !
Looking forward to the February calendar coming soon...
#MTBoS #iTeachMath #ClassroomMath #MathEd #MathsEdChat #MathsToday

https://karendcampe.wordpress.com/2025/01/01/january-calendar-problems-3/

Reflections and Tangents · Jan 1January Calendar ProblemsHappy New Year and welcome to 2025! Since 2025 is a multiple of 25 (among its many other math-y properties), here is the January 2000 Calendar of Problems from 25 years ago for you and your student…

**Karen Campe** @KarenCampe · Jan 12

Jan 12

Karen Campe @KarenCampe

New Blog Post: "Go For Geometry! Episode 2"
Part of series using #geometry technology on ALL the platforms!

Check out activities "Draw Vs. Construct Rectangles" and "On And Off" on Desmos, GeoGebra & TI Calculators

#MTBoS #iTeachMath #MathEd #MathsEdChat #ClassroomMath

https://karendcampe.wordpress.com/2025/01/11/go-for-geometry-2/

Reflections and Tangents · Jan 12Go For Geometry! 2Using Dynamic Technology to Build Understanding ◊ Episode 2: Draw Vs. Construct ◊ When using Dynamic Geometry technology platforms, a careful distinction must be made between a figure that is DRAWN…

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**Karen Campe** @KarenCampe · Jan 12 *

Jan 12 *

Karen Campe @KarenCampe

@apt12 @gwenbeads @mrdk the collinearity is a cool "find" when students are exploring.
Here's my "Concurrency" lab activity (GeoGebra plus pdf activity)
https://www.geogebra.org/m/CQ3bbuFw

GeoGebra · Dec 7, 2017ConcurrencyConcurrency

#MTBoS #iTeachMath #geometry

**Karen Campe** @KarenCampe · Jan 5

Jan 5

Karen Campe @KarenCampe

Hello teacher friends! It's a good time to think about how to get end-of-quarter feedback from students in a reflective & productive way. Here's my quick "4 Question" method:

https://karendcampe.wordpress.com/2018/11/01/end-of-quarter-feedback-is-a-two-way-street/

Reflections and Tangents · Nov 1, 2018End of Quarter Feedback Is a Two-Way StreetWith the first marking period winding down here in the northeastern US, teachers and students are focusing on the grading process. How might we make end-of-marking period evaluations into a constr…

#MTBoS #iTeachMath #T3Learns

**Karen Campe** @KarenCampe · Jan 4

Jan 4

Karen Campe @KarenCampe

New Blog Post: "Go For Geometry!" First in a series about using #geometry technology on ALL the platforms!

Check out the activity "Invariants" on Desmos, GeoGebra & TI calculators

#MTBoS #iTeachMath #T3Learns #ClassroomMath #MathEd #MathsEdChat

https://karendcampe.wordpress.com/2025/01/03/go-for-geometry/

Reflections and Tangents · Jan 3Go For Geometry!Using Dynamic Technology to Build Understanding ◊ 1st in a Series: Invariants ◊ It’s a new year, and time for a new project! This post is the first in a series about using Dynamic Geometry technolo…

**Karen Campe** @KarenCampe · Jan 1

Jan 1

Karen Campe @KarenCampe

Happy New Year! Enjoy the January #ProblemSolving Calendar! Share your process here or on post.

Also: BONUS article-teaching strategies for success in #math class.

https://karendcampe.wordpress.com/2025/01/01/january-calendar-problems-3/

**Karen Campe** @KarenCampe · Dec 29, 2024

Dec 29, 2024

Karen Campe @KarenCampe

The solutions are posted for the December Calendar of Problems! If you've done some #ProblemSolving tell us your favorite solution methods here or in blog comments.
January Calendar coming soon!
#MTBoS #iTeachMath #ClassroomMath #RecreationalMath #MathEd #MathsEd

https://karendcampe.wordpress.com/2024/12/01/december-calendar-problems-3/

Reflections and Tangents · Dec 1, 2024December Calendar ProblemsDecember is here and my gift to you is the monthly problem solving calendar! Let’s go back 22 years to the December 2002 Calendar of Problems for you and your students to try. I have the last…

**Karen Campe** @KarenCampe · Dec 1, 2024

Dec 1, 2024

Karen Campe @KarenCampe

The December #ProblemSolving Calendar is here! Enjoy & share your working out process here or on the post.

Also: BONUS articles on Mathematical Curiosity. #MathJoy

#MTBoS #iTeachMath #ClassroomMath #RecreationalMath #MathEd #MathsEdChat

https://karendcampe.wordpress.com/2024/12/01/december-calendar-problems-3/

**Karen Campe** @KarenCampe · Dec 1, 2024

Dec 1, 2024

Karen Campe @KarenCampe

Solutions to the November Calendar of Problems are posted!
Stay tuned for December Calendar coming later today...
Sign up by email so you don't miss it!

#MTBoS #iTeachMath #T3Learns #RecreationalMath #ClassroomMath #MathEd #MathsEdChat

https://karendcampe.wordpress.com/2024/11/01/november-calendar-problems-2/

Reflections and Tangents · Nov 1, 2024November Calendar ProblemsDon’t be a turkey, give thanks for the monthly problem solving calendar! Here is the November 1987 Calendar of Problems from 37 years ago for you and your students to try. I have the last of …

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