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.M3.F-IF.7

Analyze piecewise, absolute value, polynomials, exponential, rational, and trigonometric functions (sine and cosine) using different representations to show key features of the graph, by hand in simple cases and using technology for more complicated cases, including: domain and range; intercepts; intervals where the function is increasing, decreasing, positive, or negative; rate of change; relative maximums and minimums; symmetries; end behavior; period; and discontinuities.

Example Problems

Evaluate:

\int_0^2 xe^{-x} dx

Evaluate:

\int_0^1 xe^{2x} dx

Evaluate:

\int_0^t xe^{5x} dx

Khan Academy Resources

Average rate of change review Intro to rational expressions Absolute value graphs review Graphs of polynomials: Challenge problems Zeros of polynomials & their graphs Graphs of polynomials End behavior of polynomials Symmetry of algebraic models Positive & negative intervals of polynomials Domain and range from graph End behavior of rational functions Graphs of rational functions Rational functions: zeros, asymptotes, and undefined points Rewrite exponential expressions Construct sinusoidal functions Increasing and decreasing intervals Quadratic word problems (standard form)Average rate of change word problems End behavior of polynomials Graphing exponential growth & decay Periodicity of algebraic models Interpret quadratic models Graph interpretation word problems Use ratios in right triangles Graph absolute value functions Comparing linear functions word problems Interpret parabolas in context End behavior of algebraic models Graphs of exponential growth Interpret a quadratic graph Positive & negative intervals of polynomials Linear models word problems Function domain word problems Piecewise functions graphs Linear equations word problems: graphs Equivalent forms of exponential expressions Modeling with sinusoidal functions: phase shift Average rate of change: graphs & tables Relate ratios in right triangles Quadratic word problems (vertex form)Exponential vs. linear growth over time Zeros of polynomials (factored form)Evaluate piecewise functions Quadratic word problems (factored form)Interpret exponential expressions word problems Connecting exponential graphs with contexts Determine the domain of functions Modeling with sinusoidal functions Quadratic word problem: ball Intro to exponential functions Modeling with linear equations: snow Linear equations word problems: earnings Exponential function graph Linear graphs word problems Graphing rational functions according to asymptotes Trig word problem: modeling annual temperature Examples finding the domain of functions Trig word problem: length of day (phase shift)Graphs of rational functions: horizontal asymptote Comparing linear functions word problem: work Graphing exponential growth & decay Graphing absolute value functions Periodicity of algebraic models Interpret quadratic models: Factored form 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 Graphs of exponential growth End behavior of algebraic models Worked example: graphing piecewise functions Symmetry of algebraic models Comparing linear functions word problem: climb Quadratic word problems (vertex form)Graphs of rational functions: zeros Sine & cosine of complementary angles Worked example: average rate of change from table Linear equations word problems: volcano Worked example: evaluating piecewise functions Analyzing tables of exponential functions Determining whether values are in domain of function Average rate of change word problem: graph Comparing maximum points of quadratic functions Introduction to piecewise functions Linear graphs word problem: cats Quadratic word problems (factored form)Worked examples: Forms & features of quadratic functions Graph interpretation word problem: temperature Comparing features of quadratic functions Worked example: domain & range of piecewise linear functions Interpret quadratic models: Vertex form Rewriting exponential expressions as A⋅Bᵗ Intro to end behavior of polynomials Graphs of rational functions: y-intercept Discontinuities of rational functions Equivalent forms of exponential expressions Graphs of rational functions: vertical asymptotes Worked example: domain & range of step function Trig word problem: modeling daily temperature Analyzing graphs of exponential functions Comparing linear functions word problem: walk Sinusoidal function from graph Analyzing graphs of exponential functions: negative initial value Using complementary angles Graph interpretation word problem: basketball Trig word problem: complementary angles Average rate of change word problem: table Interpret a quadratic graph

1-on-1 AI tutoring aligned to NC.M3.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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