Is Goblins free for teachers?

Yes. Goblins offers a generous free tier that includes 1 live feedback assignment per week, insights on student mastery and replays, and the ability to upload your own content. The Max plan adds unlimited assignments, superadaptive mode, grade exports, standards growth reports, and SSO/LMS integration, with per-student pricing for schools and districts.

How does Goblins work?

Three simple steps: (1) Share an assignment from thousands of standards-aligned topics using a share code. (2) Students speak and draw their thinking naturally, and Goblins responds with Socratic questioning that sounds just like their teacher. (3) Teachers get real-time formative insights showing what students struggle with and suggestions to inform instruction.

Does Goblins prevent cheating?

Yes. Goblins uses a purpose-trained AI model that evaluates cheating signals in real time. It can detect when students are copying answers, using external tools inappropriately, or not genuinely working through problems. Copy-pasting answers is also blocked.

Can I use my own voice with Goblins?

Yes. Teachers can record their voice and take a selfie to create a custom 3D avatar in about 30 seconds. Students then hear help in their own teacher's voice and see a familiar face, making the experience more personal and effective.

What math levels does Goblins cover?

Goblins covers math from Grade 5 through AP Calculus, including thousands of standards-aligned topics. Teachers can also upload their own content for custom assignments at any level.

Is Goblins FERPA compliant?

Yes. Goblins is FERPA and state compliant. Student data privacy and security are a top priority.

Does Goblins support English Language Learners?

Yes. Goblins supports 30+ languages so teachers don't have to translate every worksheet. It is especially helpful for ELL students who need accessible math instruction in their native language.

NC.7.RP.2.a.3

Compare two different proportional relationships using tables, graphs, equations, and verbal descriptions.

Example Problems

How many cars per year did the car salesperson who sold the most cars per year sell?

Car Salesperson	Years of Employment	Cars Sold
Ronaldo	2	104
Maria	7	322
Bruno	12	516

What is the lowest average speed (in kilometers per hour) of the river rafting adventure that offers the lowest average speed?

Adventure	Duration (in hours)	Distance (km)
High Tide	1	3
Monsoon	2	5
Tsunami	4	14

What is the price per acre of the plot of farmland that has the lowest price per acre?

Plot	Area (in acres)	Price (in dollars)
Bumper Crop	22	89,000
Pay Dirt	88	312,000
The Corn-er Lot	99	390,000

Khan Academy Resources

Interpreting graphs of proportional relationships

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