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.

A1.F-LE.A.3

Observe, using graphs and tables, that a quantity increasing exponentially eventually exceeds a quantity increasing linearly or quadratically.

Example Problems

Maria and Lucia own land.

Lucia began with 11 hectares during the first month, and gained 5 more hectares each month.

Maria owned 6 hectares during the first one, and her land multiplied by a factor of

1.4

each month.

After which month will Maria's amount of land first exceed Lucia's amount of land?

Eva and Tom own land.

Tom started with 13 hectares in the first month, gaining 6 more hectares each subsequent month.

Eva owned 8 hectares in the first month, and her land multiplied by a factor of 1.5 each month.

After which month will Eva's amount of land first exceed Tom's amount of land?

Rebecca made two investments:

Fund U has a value of $900 in the first year and increases by $75 each subsequent year.

Fund V has a value of $850 in the first year and grows by 9% per year.

Rebecca checks the value once a year, at the end of the year.

What is the first year in which V exceeds U?

Khan Academy Resources

Exponential vs. linear growth Exponential vs. linear models: table Exponential vs. linear growth

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