Drop 'Cross-Section', Teach Volume Simpler
Simplifying terminology removes learning barriers for students
Jul 8, 2026 · 1 hr 1 min · 11 segments
In an unscheduled episode, Kris Boulton analyses a trainee teacher's volume-of-prisms sequence. He and Craig Barton work through key design principles — simplifying the rule, stripping out the…
Chris BoultonGuest
Craig BartonHost
Here's the sequence I'm thinking of trying." And then people are coming back, like 30 comments, 35 comments.

Before we dive into, um, the sequences we're gonna be talking about, just tell us a little bit about that community, mate, because you must be loving it.

It is just, it's open to all of the paid subscribers of the Substack, so for relatively little.

It's not just access to the Substack you're getting, it's direct access to that community.

And I really love it because it's just a, a whole group of r- uh, really, really enthusiastic teachers of mathematics sharing their thoughts with each other and having those conversations with one another, and I would have killed for that kind of support when I was a trainee teacher or anytime I was in the classroom.

Even, even in King Solomon Academy, I think I would have benefited from those kinds of like-minded people to talk with, so I'd have loved that.

And then the, um, but the, the other one we've got is more for the f- people who are on our more formal programs, the schools we've brought in, trusts we've brought in.

And that one operates in a similar way, but everybody who's there, it's a smaller community and it's everybody who you know they're in a similar position to you.

So sometimes the conversations are gonna be not just about teaching a material resource, but how you affect change and how you get all the teachers to buy in or how you scale up the ideas institutionally.

And they've got access to all the same resources and training videos everyone else does on the platform.

And becoming increasingly sophisticated, we're gonna moderate that one more with sort of leadership on our side and events that we're gonna start hosting two minds, whether or not we make it public.

It's just, it's just such a, it's so wonderful to be surrounded by people who are as keen and engaged and enthusiastic about teaching mathematics and believing kids succeed as you are, 'cause you really don't always get that, do you, in an individual school in your department of eight to 10 teachers.

How many in our own network where I think they would say all of our teachers in our department fit the bill?

So that's, that's quite a rare thing, and if you can't get it in your school, there's a place for you to go now, which is, is really exciting.

Here's the sequence I'm thinking of trying." And then people are coming back, like 30 comments, 35 comments.

Before we dive into, um, the sequences we're gonna be talking about, just tell us a little bit about that community, mate, because you must be loving it.

It is just, it's open to all of the paid subscribers of the Substack, so for relatively little.

It's not just access to the Substack you're getting, it's direct access to that community.

And I really love it because it's just a, a whole group of r- uh, really, really enthusiastic teachers of mathematics sharing their thoughts with each other and having those conversations with one another, and I would have killed for that kind of support when I was a trainee teacher or anytime I was in the classroom.

Even, even in King Solomon Academy, I think I would have benefited from those kinds of like-minded people to talk with, so I'd have loved that.

And then the, um, but the, the other one we've got is more for the f- people who are on our more formal programs, the schools we've brought in, trusts we've brought in.

And that one operates in a similar way, but everybody who's there, it's a smaller community and it's everybody who you know they're in a similar position to you.

So sometimes the conversations are gonna be not just about teaching a material resource, but how you affect change and how you get all the teachers to buy in or how you scale up the ideas institutionally.

And they've got access to all the same resources and training videos everyone else does on the platform.

And becoming increasingly sophisticated, we're gonna moderate that one more with sort of leadership on our side and events that we're gonna start hosting two minds, whether or not we make it public.

It's just, it's just such a, it's so wonderful to be surrounded by people who are as keen and engaged and enthusiastic about teaching mathematics and believing kids succeed as you are, 'cause you really don't always get that, do you, in an individual school in your department of eight to 10 teachers.

How many in our own network where I think they would say all of our teachers in our department fit the bill?

So that's, that's quite a rare thing, and if you can't get it in your school, there's a place for you to go now, which is, is really exciting.
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Drop 'Cross-Section', Teach Volume Simpler
Simplifying terminology removes learning barriers for students
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