This is a new virtual Zoom series for K-12 mathematics teachers where we can reflect on what learning was like last year. With a focus on student thinking, we will ask ourselves — "What is worth keeping?”


As we reflect, we will also deepen your understanding of mathematics and engage with peers to unpack the teaching of mathematics. Between each session we will share opportunities for you to stay connected with fellow teachers on "tasks to try" before the next session. All activities will be led by Deb Stetson and Sayonita Ghosh Hajra.

Here are the topics we will be covering at each session:

  • Experience inclusion activities & build community

  • Problem solving, engaging in discourse, and question-posing

  • Open exploration and identify questions to extend thinking

  • Explore different technology & tools


Sep 15

Virtual via Zoom

Wednesday: 4:00-5:15pm


oct 20

Virtual via Zoom

Wednesday: 4:00-5:15pm


Jan 19

Virtual via Zoom

Wednesday: 4:00-5:15pm


feb 16

Virtual via Zoom

Wednesday: 4:00-5:15pm


february 16th Teaser

The Challenge: Pass through every square with one spaghetti noodle, making sure to always:

  • Move to an adjacent square that is above, below, to the right or left of the square

  • Choose the square with the smallest value, when there is a choice

  • Only move through open squares that haven’t been passed through before

Check a video with examples and further explanation here


Check out what we've worked on so far!

In September...

We used Mathigon Polypad as a tool to explore an open-ended task about minimizing perimeter. We displayed everyone's learnings in a "knowledge feed" and we reflected on what made it a low-floor task.

Check it out here!

In October....

We explored a counting task about diagonals of ever-enlarging squares, and identified questions for future exploration and possible extensions.

Check it out here!


In January...

We explored a sorting problem that had us searching for patterns, and then challenged our thinking as we learned more.

Check it out here!

Coming Soon

Stay Tuned


Hover over the image below for a clue...

The lowest numbers in each group are shown above. Where do you think the rest might go?

The fine print


The cost per session is $20.00


Each session will be held via Zoom. The Zoom link will be sent out the Monday before each event.

Continuing Education Units (CEUs)
There are 0.5 units available for purchase for $100 if you attend all four of our FOSTER events. Please check with your organization to ensure the CEUs we offer meet your employer/school district's requirements.

Cancellation policy
Please notify us by e-mail no less than five days prior to the session* for a full refund. If your request is received five days before the course begins, you may transfer the full amount of your paid fees to another date in the series or receive a full refund, less a $10 processing fee. If you do not attend the course or notify us in the allotted time, you will not receive a refund. All refunds will be issued by check. Checks require one month for clearance prior to processing refunds. Refund checks are processed within four to six weeks.

​* A five day notice does not include weekends or holidays. E-mail your request to or send a fax to (916) 278-5480.

If you need more information or have questions, contact Debbie Dennick at (916) 278-4497 or