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Principal Investigator: Lisa LambCo-PI: Melissa Soto
Funded by: California Mathematics Project through the UC Regents. 

California Mathematics Project Statement on Racial Violence

Calling all K-12 teachers of mathematics! Come collaborate with us while learning mathematics and how to teach it more effectively. The San Diego Mathematics Project (SDMP) is one of 22 sites of the California Mathematics Project. We sponsor events and workshops to meet local needs, and we partner with other mathematics professional development projects, the County Office of Education, and school districts to improve mathematics achievement in San Diego County.
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The San Diego Math Project benefits from additional funding from the Qualcomm Endowment, Improving Student Achievement in Mathematics. Thank you to the Qualcomm Foundation* for its support of mathematics teaching and learning in the region. 
*Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the Qualcomm Foundation.

Upcoming events!

Smithsonian K-12 STEM Education: Action Planning Institute (API)
No Cost to Participants!
Dates: July 28-30
Host: The Smithsonian Science Education Center (SSEC)
Location: Virtual

Live and asynchronous sessions will foster critical conversations on topics most relevant to K-12 science education today such as social emotional supports, equity and accessibility, and facilitating three-dimensional science investigations remotely.
This institute is offered at no cost and open to educators, parents, community members, and industry stakeholders dedicated to ensuring continuity in K-12 STEM education for all students. Participating individuals and teams will make meaningful connections between knowledge and practice and will, most importantly, develop an action plan to guide their return to school in the fall. Our goal is to make certain that students from all demographics receive equitable access to inquiry-centered science/STEM education whether learning remotely or learning in school with adjusted schedules.
Register today at

SDSU’s CGI Professional Development Collaborative 

The SDSU CGI PDC can develop a plan that’s just right for your school and district. Learn more at

CGI for K-2 Teachers

Summer Dates: August 10, 11 and 12, 2020   8:30 am–11:30 am   Now Offered Virtually!
*Fall Follow-up Date: October 15, 2020; 8:30 am–2:30 pm 
*Spring Follow-up Date: March 3, 2021; 8:30 am–2:30 pm
And Three 1-hour Zoom Sessions held after school hours, dates TBD

*Dates will not change but mode may change from face-to-face to virtual.

Early Bird Rate: $500. Price will increase to $550 beginning 5/31/20

CGI for 3-5 Teachers

Summer Dates: August 10, 11 and 12, 2020;  8:30 am–11:30 am  Now Offered Virtually!
*Fall Follow-up Date:  October 22, 2020;  8:30 am–2:30 pm
*Spring Follow-up Date: March 4, 2021; 8:30 am–2:30 pm 
And Three 1-hour Zoom Sessions held after school hours, dates TBD

*Dates will not change but mode may change from face-to-face to virtual.

Early Bird Rate: $500. Price will increase to $550 beginning 5/31/20

Did You Miss a Session? It’s Not too Late to Learn! 

Supporting Number Sense with Virtual Manipulatives (from 4/7/20), Dr. Melissa Soto
As most of us move to virtual instruction, our focus should still be on providing students with opportunities to problem solve and engage in sense making. With limited resources, how can we ensure that all our students have the math tools they need to build number sense? In this session, we will discuss Universal Design for Learning and explore virtual manipulatives as a way to continue supporting our students' number sense.
Zoom Recording of the 4/7 session
Google Folder Short URL: 
Fractions with Virtual Manipulatives (from 4/21/20),  Dr. Melissa Soto
Did you know...Fractions are often considered the gateway to algebra and first graders have fraction standards (in the Geometry section!)? Join us as we share big ideas about fractions and how we can use virtual manipulatives to support students' thinking about this foundational topic.
Google Folder Short URL: 
Some supports that were shared during the session

Young Children's Mathematics: From Counting to Problem Solving
Sessions for PreK, TK, & K Teachers
Wed, Apr 22 and Tues, Apr 28
3:00 - 4:00 pm
RSVP sawAovmx9vQ1TYcU6
Free Sessions, RSVP to receive the Zoom Link

Young children bring rich informal understandings and curiosity that we can leverage to support their mathematical development. Together we will deepen our understanding of what to look and listen for as young children engage in math, and explore ways to build from what comes naturally. 

Counting Session Leader Nick Johnson is a Co-author of Young Children’s Mathematics: Cognitively Guided Instruction in Early Childhood Education. He is also an assistant professor in the School of Teacher Education at San Diego State University. Dr. Johnson is interested in how understanding the development of children’s ideas can open opportunities to recognize children’s strengths and broaden what counts as knowing and doing mathematics.

Teaching Elementary Students Math Online with Screencasts (from 5/5/20)

In this session, we consider ways to communicate with students and engage them in meaningful mathematical experiences while teaching online. Our focus is on screencasts as a way for teachers to communicate asynchronously with students, and students to create their representations of conceptual understandings with the teacher and other students. These artifacts create learning objects that can be reviewed and assessed as a continuous feedback loop. The facilitator has been working with screencasting for the last 8 years and shares various findings from using screencasts with elementary students.
For session slides and additional materials, see

Using Desmos Activity Builder to Incorporate Mathematical Language Routines in Your Remote Learning

Date: May 6, 2020
In this session I  provide an introduction to using Desmos Activity Builder to make activities that include opportunities for students to produce and revise  mathematical explanations. We start with a brief overview of the Math Language Routines (Zwiers et at., 2017). Then we walk through one activity with an 8th grade math task that uses two Math Language Routines. Last, we discuss how you can copy, edit, and customize the activity for your classes.  We leave plenty of time for exploration and Q&A at the end.
Note: this session assumes that participants are familiar with Desmos and know about the Desmos Activity Builder (but are not experts by any means!). If you are not familiar with Desmos yet, you can learn about Desmos and the Activity Builder at before viewing the session. 

Using Online Math Videos that Feature Student Dialogue
Host: Joanne Lobato
Date: May 12

We explore videos that feature pairs of students in unscripted dialogue working together to solve challenging math problems. Our project team has developed about 80 short videos available at for two math units: Parabolas (Grades 9-11) and Proportional Reasoning (Grades 5-7). You’ll learn about features of the videos, as well as the student and teacher resources available for using the two multi-week video units. This session also includes an overview of the project, which we call Project MathTalk and which is funded by the National Science Foundation.

View a recording of this session


Opportunities and More Information

Now Offering Math Teachers’ Circles for ALL Grade-Level Teachers! 
Math Teachers’ Circles thrive on educators and math professionals making new connections. The spirit of a math circle is for teachers to grapple together in small groups to learn some mathematics and to have opportunities to experience the joy of problem solving.

Elementary School Math Teachers’ Circles
2/22/20, Comparing and Combining Quantities

Secondary School Math Teachers’ Circles
San Diego Math Teachers’ Circle (SDMTC)

Mathematical Modeling Teachers’ Circles
2/15/2020, Math for Disaster Relief

CSET Prep Courses offered through the Mathematics and Science Teacher Initiative (MSTI).  See the MSTI website for details:

See more great programs offered through the San Diego County Office of Education at