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.M2.F-IF.7

Analyze quadratic, square root, and inverse variation functions by generating different representations, by hand in simple cases and using technology for more complicated cases, to show key features, including: domain and range; intercepts; intervals where the function is increasing, decreasing, positive, or negative; rate of change; maximums and minimums; symmetries; and end behavior.

Example Problems

Find the limit:

\lim_{x \to 3} \sqrt{2x + 1} =

Find the limit:

\lim_{x \to 3} \sqrt{6x - 8} =

Find the limit:

\lim_{x \to -1} \sqrt{5 - 11x} =

Khan Academy Resources

Average rate of change review Intro to rational expressions Symmetry of algebraic models Radical functions & their graphs Domain and range from graph End behavior of rational functions Graphs of rational functions Rational functions: zeros, asymptotes, and undefined points Quadratic word problems (standard form)Graphs of square and cube root functions Average rate of change word problems Periodicity of algebraic models Graph interpretation word problems Comparing linear functions word problems Interpret parabolas in context End behavior of algebraic models Interpret a quadratic graph Linear models word problems Function domain word problems Linear equations word problems: graphs Average rate of change: graphs & tables Quadratic word problems (vertex form)Quadratic word problems (factored form)Connecting exponential graphs with contexts Quadratic word problem: ball Modeling with linear equations: snow Linear equations word problems: earnings Linear graphs word problems Graphing rational functions according to asymptotes Graphs of rational functions: horizontal asymptote Comparing linear functions word problem: work Periodicity of algebraic models Worked example: determining domain word problem (real numbers)Introduction to average rate of change End behavior of rational functions Worked example: average rate of change from graph End behavior of algebraic models Symmetry of algebraic models Comparing linear functions word problem: climb Quadratic word problems (vertex form)Graphs of rational functions: zeros Worked example: average rate of change from table Linear equations word problems: volcano Analyzing tables of exponential functions Average rate of change word problem: graph Graphing square and cube root functions Linear graphs word problem: cats Quadratic word problems (factored form)Graph interpretation word problem: temperature Worked example: domain & range of piecewise linear functions Graphs of rational functions: y-intercept Discontinuities of rational functions Graphs of rational functions: vertical asymptotes Worked example: domain & range of step function Analyzing graphs of exponential functions Comparing linear functions word problem: walk Analyzing graphs of exponential functions: negative initial value Graph interpretation word problem: basketball Average rate of change word problem: table Interpret a quadratic graph

1-on-1 AI tutoring aligned to NC.M2.F-IF.7. 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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