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.

M.4HSTR

High School Mathematics IV TR (Technical Readiness)

M.4HSTR.14Derive the formula for the sum of a geometric series (when the common ratio is not 1), and use the formula to solve problems. (e.g., Calculate mortgage payments.)M.4HSTR.18Prove polynomial identities and use them to describe numerical relationships. For example, the polynomial identity (x^2 + y^2)^2 = (x^2 – y^2)^2 + (2xy)^2 can be used to generate Pythagorean triples.M.4HSTR.19Know and apply the Binomial Theorem for the expansion of (x + y)^n in powers of x and y for a positive integer n, where x and y are any numbers, with coefficients determined for example by Pascal’s Triangle.M.4HSTR.23Explain why the x-coordinates of the points where the graphs of the equations y = f(x) and y = g(x) intersect are the solutions of the equation f(x) = g(x); find the solutions approximately (e.g., using technology to graph the functions, make tables of values or find successive approximations. Include cases where f(x) and/or g(x) are linear, polynomial, rational, absolute value, exponential and logarithmic functions.M.4HSTR.24Graph functions expressed symbolically and show key features of the graph, by hand in simple cases and using technology for more complicated cases. Graph polynomial functions, identifying zeros when suitable factorizations are available and showing end behavior.M.4HSTR.25Derive the formula A = 1/2 ab sin(C) for the area of a triangle by drawing an auxiliary line from a vertex perpendicular to the opposite side.M.4HSTR.26Prove the Laws of Sines and Cosines and use them to solve problems.M.4HSTR.27Understand and apply the Law of Sines and the Law of Cosines to find unknown measurements in right and non-right triangles (e.g., surveying problems and/or resultant forces).M.4HSTR.31Create equations and inequalities in one variable and use them to solve problems. Include equations arising from linear and quadratic functions, and simple rational and exponential functions.M.4HSTR.32Create equations in two or more variables to represent relationships between quantities; graph equations on coordinate axes with labels and scales.M.4HSTR.33Represent constraints by equations or inequalities and by systems of equations and/or inequalities and interpret solutions as viable or non-viable options in a modeling context. (e.g., Represent inequalities describing nutritional and cost constraints on combinations of different foods.)M.4HSTR.34Rearrange formulas to highlight a quantity of interest, using the same reasoning as in solving equations. (e.g., Rearrange Ohm’s law V = IR to highlight resistance R.)M.4HSTR.38Graph functions expressed symbolically and show key features of the graph, by hand in simple cases and using technology for more complicated cases.M.4HSTR.39Write a function defined by an expression in different but equivalent forms to reveal and explain different properties of the function.M.4HSTR.4Recognize the purposes of and differences among sample surveys, experiments and observational studies; explain how randomization relates to each.M.4HSTR.40Compare properties of two functions each represented in a different way (algebraically, graphically, numerically in tables, or by verbal descriptions). (e.g., Given a graph of one quadratic function and an algebraic expression for another, say which has the larger maximum.)M.4HSTR.45Identify the shapes of two-dimensional cross-sections of three dimensional objects and identify three-dimensional objects generated by rotations of two-dimensional objects.M.4HSTR.46Use geometric shapes, their measures and their properties to describe objects (e.g., modeling a tree trunk or a human torso as a cylinder).M.4HSTR.47Apply concepts of density based on area and volume in modeling situations (e.g., persons per square mile or BTUs per cubic foot).M.4HSTR.48Apply geometric methods to solve design problems (e.g., designing an object or structure to satisfy physical constraints or minimize cost and/or working with typographic grid systems based on ratios).M.4HSTR.5Use data from a sample survey to estimate a population mean or proportion; develop a margin of error through the use of simulation models for random sampling.M.4HSTR.6Use data from a randomized experiment to compare two treatments; use simulations to decide if differences between parameters are significant.M.4HSTR.7Evaluate reports based on data.M.4HSTR.8Use probabilities to make fair decisions (e.g., drawing by lots or using a random number generator).M.4HSTR.9Analyze decisions and strategies using probability concepts (e.g., product testing, medical testing, and/or pulling a hockey goalie at the end of a game).M.4HSTR.ICDInferences and Conclusions from Data M.4HSTR.MMMathematical Modeling M.4HSTR.PRRPolynomials, Rational, and Radical Relationships M.4HSTR.TGTTTrigonometry of General Triangles and Trigonometric Functions

1-on-1 AI tutoring aligned to M.4HSTR. Instant help for students, real-time insights for teachers.

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