For middle & high school math
Students trace up to 15 graphs with a finger and watch the axis light up: domain, range, increasing and decreasing intervals, and where the graph is positive or negative. Then they practice and prove it in three modes.
No sign-in needed: try the Line graph in all three modes, plus a simulated class session.
Ready to run it with your class? Teachers: sign in with Google to start a real session free: one graph, up to 35 students, no card.
Already signed up? Log in at class.graphtracer.app and bookmark it.
Three modes
Every graph works in all three modes, so students move from seeing an idea to proving they know it without switching tools.
Explore
Students pick a graph and a tracing buddy, choose a characteristic, and trace the whole graph. The trace and the axis light up in that characteristic's color, and the interval builds as they go.
Practice
Students drag along the right axis to mark their answer and tap an endpoint to switch it between open and closed. Reveal Answer shows whether they got it.
Master
Multiple-choice questions with answers that look alike, the way they do on a test. A wrong pick shows the correct answer and highlights it on the graph.
What lights up
Every trace colors the axis for the feature being practiced, so the interval notation matches something students just did with their own finger.
Every x-value the graph covers, from its left end to its right end.
Every output the graph reaches, from its lowest point to its highest.
Where the graph rises as you move left to right.
Where the graph falls as you move left to right.
The x-values where the graph sits above the x-axis.
The x-values where the graph dips below the x-axis.
The graph library
Each graph is chosen to practice a different kind of interval: closed and open endpoints, rays, pieces, and asymptotes. The free version includes the Line. The Full Edition unlocks all 15.
Arrows both ways
Arrows both ways
Arrows both ways
Arrows both ways
Closed endpoints
Closed start, arrow right
Closed endpoints
Open endpoints
One closed, one open
Open start, arrow right
Closed start, arrow right
Two pieces, closed endpoints
Horizontal asymptote
Horizontal asymptote
Horizontal asymptote
How it works in class
Sign in with Google, pick your class length (30 to 60 minutes), and generate a class code.
Put the QR code or six-letter join code on your screen. Up to 35 students join from their own devices, with no accounts or sign-ups.
When more than one student takes part, you get the class average and results for each characteristic. Nothing identifies a student.
Measure growth: run a session at the start of a unit and again at the end, then compare the class results.
Pricing
50% off for the first 50 customers. Use code FIRST50 on the annual Full Edition, through May 2027.
$0one teacher · no card needed
$39.99per year · one teacher
From teachers
The kids loved it! Some came up to the smart board to use it and explain their process to the class. They explored, practiced, and stayed at the mastery level for a while, and kept going almost right up to the bell. That's always a win, especially on a Friday!
It's an amazing resource for teaching graphs because it actually moves into the graph and helps students visually see what is happening. Instead of just looking at a graph and trying to interpret it, students can interact with it and build a deeper understanding. This is exactly the kind of resource I've been looking for.
I love how easy it is. The three modes, Explore, Practice, and Master, and the way it shows and explains each type of function make it really good. And I love the little tracing pointer!
Built for classrooms
Graph Tracer collects only what it needs to run your class. Details are in our Privacy Policy.
FAQ
Yes, you can try it free. Sign in with a Google account to use one linear graph, for one teacher and in-class use with up to 35 students. No card is required. The Full Edition unlocks all 15 graphs for $39.99 per year.
One graph, the Line, with all three modes: Explore, Practice, and Master. You can run class sessions with a join code for up to 35 students. The Full Edition adds the other 14 graphs, and students can test themselves across all graphs and characteristics.
Start a class session and show the QR code or six-letter join code on your screen. Students scan it or type it in. They don't need accounts, and the link expires when the session ends.
Yes. When more than one student takes part in a session, you see the class average and results for each characteristic. Results are only in aggregate, so nothing identifies a student. Many teachers run a session at the start of a unit and again at the end.
No. Students join a class session through an anonymous link that expires at the end of class. Graph Tracer does not capture personally identifiable student information.
Go to class.graphtracer.app and sign in with Google. Bookmark that address so you can get back to your classes quickly.
Access is given to the Google account whose email you used at checkout. Sign in with that same Google address. If it still doesn't unlock, email support@graphtracer.app.
No. The Full Edition is licensed to one teacher for in-class use with up to 35 students. It is not a school-wide or district license, so a second teacher needs a second subscription.
Cancel anytime in the Stripe customer portal or by emailing support@graphtracer.app. Cancellation takes effect at the end of your current paid year, and you keep access until then.
Start with one linear graph free. Upgrade to all 15 whenever you're ready.
Ready for your class? Teacher sign-in with Google · Returning teacher? Log in at class.graphtracer.app