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.

FA.AREI.12

Graph the solutions to a linear inequality in two variables.

Example Problems

A costume shop designs hats and wigs.

Let

x

represent the number of hats and

m

represent the number of wigs the shop can produce with its daily supply of fabric:

(1.2)x + (3.4)m \leq 7000

.

The shop wants to design 3000 hats daily. How many wigs at most can the shop produce daily with the remaining supply of fabric?

A publishing company prints newspapers and magazines.

Let x represent the number of newspapers and m represent the number of magazines the company can print with its daily supply of ink cartridges:

(0.5)x + (2.5)m \leq 6000

.

The company wants to print 8000 newspapers daily. How many magazines at most can the company print daily with the remaining number of ink cartridges?

A cafe serves lattes and fruit smoothies.
Let

x

represent the number of lattes and

m

represent the number of smoothies the cafe can make with its daily supply of milk:

(0.3)x + (0.5)m \leq 1600

.
The cafe plans to make 2,000 lattes each day. How many smoothies at most can the cafe make each day with the remaining supply of milk?

Khan Academy Resources

Graphing inequalities (x-y plane) review Two-variable inequalities from their graphs Graphs of inequalities Interpret points relative to a system Solutions of inequalities: graphical Intro to graphing two-variable inequalities Graphing two-variable inequalities Two-variable inequalities from their graphs Graphs of two-variable inequalities word problem

1-on-1 AI tutoring aligned to FA.AREI.12. Instant help for students, real-time insights for teachers.

Used in classrooms by 100,000+ students at Baltimore County, Plano ISD, Deer Valley USD, KIPP, and districts nationwide.

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