Desmos Calculator
Use this like the AP exam calculator.
Tip: drag the drawer edge or resize your window if you want more room.
Stats presets
One-click starter setups for common AP Stats calculator tasks.
Mode
Iframe
If these buttons are disabled, the app is in iframe mode. They will work automatically once the API loads.
Built for AP teachers and students

Introducing Coach

Students need support for real thinking, and practice that reflects the AP exam. Teachers need a clear picture of what students actually understand.

AI can hide what students really know and give them ways to skip the hard thinking.

Coach is here to change that.

Completely free to use. No catches. No credit card. No setup hassle.

Currently available for:

Students learning with Coach
Want to see how it works first?
Take a 2-minute guided tour →
The approach

What if you could see student thinking again?

Coach gives you that window back. Students practice inside the platform, and nothing can be pasted in from outside. Every attempt, revision, and explanation is their own work. AI coaches them through the difficult parts without doing the thinking for them.

And you get Teacher Decision Support: a daily view that tells you which students are struggling, which skills need reteaching, and where your attention will matter most.

Which of my students need me today, and why?

What powers the platform

Coach Engine

Coach Engine is the system behind Coach. It connects what students do to what teachers need to know:

Student Work

Every time a student tries a problem, revises an answer, or explains their thinking, the platform notices. These moments of real effort are what make everything else possible.

Coach Engine

Coach Engine reads patterns across each student's work to understand what they know, where they are stuck, and what would help them most right now. Then it gives them coaching that meets them where they are. Without handing over answers.

Student Learning & Teacher Insight

Students get the right next challenge to build real understanding. Teachers see clearly where growth is happening, where students are stuck, and who needs support next.

Not more AI noise. Clearer insight into student thinking.

How students learn

Learning happens in cycles.

Attempt Feedback Revision Retry Mastery

The whole platform is built around this rhythm. Students do the thinking. AI helps them improve. Teachers see the result.

See it for yourself

See a real classroom dashboard.

Not screenshots. Not slides.
A live classroom dashboard you can actually walk through, with guided audio narration.

Real teacher tools. Sample student data. No account required.

How it works

Get started in three simple steps

1
Create your class

Set up your class and invite students with a join link.

2
Assign practice

Students work inside the platform, with AI support that helps without doing the thinking for them.

3
See who needs you most

Teacher Decision Support shows you which students need attention, which skills to reteach, and what to adjust next.

What we believe

Three principles we build on

Thinking cannot be outsourced

If a student does not do the thinking, no learning happens. AI can support the process, but the hard part has to stay with the student.

Struggle is part of learning

Understanding forms through difficulty, not around it. The platform preserves that struggle instead of designing it away.

Correctness is not understanding

A right answer without reasoning proves nothing. The platform tracks how students think, not just whether they got it right.

Coach

See what your students are actually thinking.

AP Statistics, AP World History, AP US History, and AP Government. More AP courses on the way.

Built by a teacher, for AP teachers. Free to start. No card required.