Author Archives: Eric Crantz


I have facilitated many demonstration “number talks” this year throughout Fresno County.  I even blogged about it earlier this school year.  Talking mathematically in our classrooms is so important that I can’t stop sharing the idea of number talks, even if it is being repeated for some of the teachers that I work alongside.  

A couple of weeks ago I had yet another opportunity to share number talks. The first classroom that I walked into happened to be engaged in the “designated ELD time” for the entire fourth grade.  The California ELA/ELD Framework says, “Designated ELD is a protected time during the regular school day when teachers use the CA ELD Standards as the focal standards in ways that build into and from content instruction in order to develop critical English language skills, knowledge, and abilities needed for content learning in English.” Since I was demonstrating a number talk, the teacher allowed me to do what I had planned.  The number talk went very well, and I had students that wanted to stay after their ELD time was over to share solutions that we hadn’t had time to explore during class.  In fact, this number talk was an extremely effective use of the designated ELD time.  Through content instruction in mathematics, students had the opportunity to develop critical English language skills.  I left feeling excited because the students had been excited!  I didn’t realize the effect this would have on the rest of my day.

As I went from classroom to classroom those same students were now spread out back in their home room classes.  Even as I explored different number concepts in different classrooms, those students who had been in the ELD class in the morning were engaging in the number talks.  They were sharing their thinking and ideas over and over again.  After each number talk the homeroom teacher would pull me aside and say something to the effect of, “I can’t believe how much talking “those ELD students” did today!  They never raise their hands and share out loud with the class.”  It hit home again for me how important it is for us to frontload our EL students so that they have a chance to utilize language and engage in concepts that may be a struggle for them without previous exposure.  When we allow our students the chance to make connections to their previous knowledge, they are able to create new learning structures for themselves.  Then, when given the chance to apply that new learning in a new context, they thrive!  They have access where there was no access before, and there is a sense of joy that they are taking part in discussions that they hadn’t been able to have before.

When we have Designated ELD time where students gather from multiple classes, we need to have a plan as to what they will be exposed to during that time.  Why was it that this day was an original experience for those homeroom teachers?  I think it was because they hadn’t been communicating about what needed to be presented during ELD time that would enrich those students thinking so that they could engage in the homeroom lessons more effectively.  This is a complex process, but something we have to start thinking about and utilizing our PLC or other times to collaborate, to make our ELD classes more effective, and in turn increase all student learning.


Talking Math

Allowing our students to talk to each other about mathematics is very important in today’s educational culture.  Gone are the days when students sat in rows quietly working on repetitive worksheets.  Instead, we want to hear what students are thinking.  How are they processing information?  What do they see as important?  What solution pathways are… Continue Reading

Which is Bigger?

Which is bigger 5/6 or 7/8? If the answer isn’t popping into your head in seconds, you are not alone. Fractions are one of the most misunderstood concepts among both young and old in mathematics.  They don’t seem to follow the same rules as whole numbers.  Many of us purposely never work with fractions at… Continue Reading

Deliberate Practice

Along with a passion for mathematics education, I am also a pretty big sports geek.  Some of it is the numbers that go along with every sport.  For me, it started as a kid growing up in Oakland with easy access to both the Oakland A’s and the San Francisco Giant’s baseball teams, and trying… Continue Reading

Called on the Carpet: A Reminder of My Own Beliefs

As a constructivist, I believe that young students bring a vast amount of knowledge with them when they first begin school. Whether that time is pre-school, transitional kindergarten, or kindergarten, all students come with experiences that have influenced how they think, what they believe, and what they know. They have constructed knowledge in the area… Continue Reading

Number Talks and Assimilation

Number talks were developed for classroom teachers to engage students in “mental math” by collaboratively grappling with interesting mathematics problems. I was first introduced to the idea of number talks from the book, “Number Talks” by Sherry Parrish. Recently, I had the pleasure of facilitating number talks in 6 third grade classrooms, all at the… Continue Reading

Professional Noticing: It’s Hard!

Teaching, in my opinion, is one of the most complex occupations in our society.  As Miriam Sherin puts it in Mathematics Teacher Noticing, “the blooming, buzzing confusion of sensory data that teachers are faced with” can be overwhelming.  Remember back to when you were first learning how to drive. You had to pay attention to… Continue Reading

The Why Before the How

I have a deep passion for mathematics education. More specifically, elementary math education is where I have spent most of my career. I began my career as an elementary teacher for ten years, and am now a mathematics coach and consultant with the Fresno County Office of Education (FCOE). In addition this year, I am… Continue Reading