Sara Van Der Werf
@saravanderwerf.bsky.social
Math Teacher & sometimes leader. Connecter. Evangelist for Math. MN gal. Curator of a Calculator Museum. Backwards Bike rider. Want to be a writer and creator again. Love connecting with Math Peeps. Links: https://linktr.ee/saravanderwerf
I am speaking with my friend MN friend Nina Smith at the @buildmathminds.bsky.social virtual summit on Sat, Feb 28th. I would love for yout to hang out with us! info here: virtualmathsummit.com?inf_contact_... #iteachmath
February 2, 2026 at 12:51 AM
I am speaking with my friend MN friend Nina Smith at the @buildmathminds.bsky.social virtual summit on Sat, Feb 28th. I would love for yout to hang out with us! info here: virtualmathsummit.com?inf_contact_... #iteachmath
Been tallying up my thoughts. They are in the usual space.
January 28, 2026 at 11:05 PM
Been tallying up my thoughts. They are in the usual space.
I did something tonight that I have not done in over five years. I once talked about this thing I did all the time in this space. I miss the glory days of #mtbos. If you know me, you can find more about what I am thinking. #minneapolis
January 28, 2026 at 5:02 AM
I did something tonight that I have not done in over five years. I once talked about this thing I did all the time in this space. I miss the glory days of #mtbos. If you know me, you can find more about what I am thinking. #minneapolis
Reposted by Sara Van Der Werf
Name Tents for the win!! @saravanderwerf.bsky.social They are my favorite teacher thing. www.saravanderwerf.com/week-1-day-1...
January 15, 2026 at 2:52 AM
Name Tents for the win!! @saravanderwerf.bsky.social They are my favorite teacher thing. www.saravanderwerf.com/week-1-day-1...
I have not blogged in a long time, but this gem from my blog is perfect for educators this time of year. An easy and fun activity for all - low prep, low stress - students love it. If you need an easy win check out the 5x5 game. www.saravanderwerf.com/5x5-most-ama... #iteachmath #mtbos
5×5 Most Amazing Just for Fun Game - Sara VanDerWerf
UPDATE DECEMBER 2021 - Simplified Version: I've spent quite a bit of time in K-5 world the last several years. This year I introduced this game to my Elem math Ed students. They loved it. Since they a...
www.saravanderwerf.com
December 17, 2025 at 11:43 PM
I have not blogged in a long time, but this gem from my blog is perfect for educators this time of year. An easy and fun activity for all - low prep, low stress - students love it. If you need an easy win check out the 5x5 game. www.saravanderwerf.com/5x5-most-ama... #iteachmath #mtbos
My coworker Mike is a new mathematician today.
October 17, 2025 at 2:39 PM
My coworker Mike is a new mathematician today.
Seen @nctm.org this morning. I’m not there but my coworker Mike is. Say Hi to him. #iteachmath
October 16, 2025 at 12:41 PM
Seen @nctm.org this morning. I’m not there but my coworker Mike is. Say Hi to him. #iteachmath
Hey Math Friends in Atlanta. I am not there, but so jealous. Can you post pics of the sessions you attend and people and slides and...let me have an at home experience. Also, look for my MN friends there. Hang out with them. (also look for my coworker Mike Huberty in costume)
October 15, 2025 at 7:09 PM
Hey Math Friends in Atlanta. I am not there, but so jealous. Can you post pics of the sessions you attend and people and slides and...let me have an at home experience. Also, look for my MN friends there. Hang out with them. (also look for my coworker Mike Huberty in costume)
I turned 57 today! All previous posts connect to this number. Happy Thursday all. (just humoring myself)
September 18, 2025 at 8:42 PM
I turned 57 today! All previous posts connect to this number. Happy Thursday all. (just humoring myself)
I know some of you have been wondering about my posts in the last 12+ hours. I am just humoring myself. But I know some of you are worried - here is my proof - within a couple of hours I received these texts from my sister, brother and mom. More soon to connect all the previous posts today.
September 18, 2025 at 8:40 PM
I know some of you have been wondering about my posts in the last 12+ hours. I am just humoring myself. But I know some of you are worried - here is my proof - within a couple of hours I received these texts from my sister, brother and mom. More soon to connect all the previous posts today.
My age today is NOT a prime number, BUT a lot of people think my age is a prime number? How old am I? #mtbos #teachmath #mathstoday
September 18, 2025 at 4:17 PM
My age today is NOT a prime number, BUT a lot of people think my age is a prime number? How old am I? #mtbos #teachmath #mathstoday
The Alexander Grothendieck legend.
September 18, 2025 at 12:55 PM
The Alexander Grothendieck legend.
Lets Visit Italy’s Islands!
September 18, 2025 at 2:35 AM
Lets Visit Italy’s Islands!
Yes I made a homemade ‘Happy Perfect Square Day!’ pin to wear today. Do something that involves a right triangle today & let me know what it is. #iteachmath #mathstoday
September 16, 2025 at 1:12 PM
Yes I made a homemade ‘Happy Perfect Square Day!’ pin to wear today. Do something that involves a right triangle today & let me know what it is. #iteachmath #mathstoday
Reposted by Sara Van Der Werf
I know three people whose birthday is today. I told them that they should celebrate at 1:04. =)
September 16, 2025 at 12:27 PM
I know three people whose birthday is today. I told them that they should celebrate at 1:04. =)
Reposted by Sara Van Der Werf
I just learned from a math teacher that it is a day: Perfect Square Day!
And this is a special one for this century, because 2025 is 45²
bsky.app/profile/sara...
And this is a special one for this century, because 2025 is 45²
bsky.app/profile/sara...
9 days until Perfect Square Day! I know 9/9/25 is a perfect square, but 9/16/25 hits a bit different as it connects with a 3/4/5 right traingle. On another note, I made my nephews pose for this pic when the turned ages 3, 4 & 5.
Download a countdown HERE: docs.google.com/document/d/1...
Download a countdown HERE: docs.google.com/document/d/1...
September 16, 2025 at 12:35 PM
I just learned from a math teacher that it is a day: Perfect Square Day!
And this is a special one for this century, because 2025 is 45²
bsky.app/profile/sara...
And this is a special one for this century, because 2025 is 45²
bsky.app/profile/sara...
1 day! Does it have to be squares off of each side of the triangle? Also, my nephews at ages 3, 4 and 5. Enjoy. #iteachmath #mathstoday #mtbos docs.google.com/document/d/1...
September 15, 2025 at 2:19 PM
1 day! Does it have to be squares off of each side of the triangle? Also, my nephews at ages 3, 4 and 5. Enjoy. #iteachmath #mathstoday #mtbos docs.google.com/document/d/1...
Correlation? Causation?
September 11, 2025 at 10:59 PM
Correlation? Causation?
What math task? What math context? should make it into the K-12 Math Hall of Fame? Let's hear your choices! #mtbos #iteachmath #mathstoday
September 11, 2025 at 7:03 PM
What math task? What math context? should make it into the K-12 Math Hall of Fame? Let's hear your choices! #mtbos #iteachmath #mathstoday
9 days until Perfect Square Day! I know 9/9/25 is a perfect square, but 9/16/25 hits a bit different as it connects with a 3/4/5 right traingle. On another note, I made my nephews pose for this pic when the turned ages 3, 4 & 5.
Download a countdown HERE: docs.google.com/document/d/1...
Download a countdown HERE: docs.google.com/document/d/1...
September 7, 2025 at 7:23 PM
9 days until Perfect Square Day! I know 9/9/25 is a perfect square, but 9/16/25 hits a bit different as it connects with a 3/4/5 right traingle. On another note, I made my nephews pose for this pic when the turned ages 3, 4 & 5.
Download a countdown HERE: docs.google.com/document/d/1...
Download a countdown HERE: docs.google.com/document/d/1...
Reposted by Sara Van Der Werf
If you really want a deep dive into the 8 SMPs and hudreds of resources - check out our playlist of 10 half-hour webinars with tons of rescourses linked in the description of each video. www.youtube.com/playlist?lis...
MN 8 Mathematical Practices Webinar Series - YouTube
10-part MN Math Leaders Webinar Series on the Eight Mathematical Practices (MPs). Every benchmark in the future 2022 MN Math Standards includes a link to one...
www.youtube.com
September 5, 2025 at 3:12 AM
If you really want a deep dive into the 8 SMPs and hudreds of resources - check out our playlist of 10 half-hour webinars with tons of rescourses linked in the description of each video. www.youtube.com/playlist?lis...
Reposted by Sara Van Der Werf
The 8 SMP's are new in MN so we are creating lots of resources. If you want a refresh, check out our stuff. Today we released a free resource anyone can use (K-2 3-5 6-8 HS & educators) to notice the assets of others engaging in the SMPs. Learn more here: www.youtube.com/watch?v=2NS_...
FREE RESOURCE for the 8 Mathematical Practices from the MN Math Leaders
YouTube video by MN Council of Teachers of Mathematics (MCTM)
www.youtube.com
September 5, 2025 at 3:12 AM
The 8 SMP's are new in MN so we are creating lots of resources. If you want a refresh, check out our stuff. Today we released a free resource anyone can use (K-2 3-5 6-8 HS & educators) to notice the assets of others engaging in the SMPs. Learn more here: www.youtube.com/watch?v=2NS_...