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.

What grade level is M.SRM taught?

This standard is part of the M curriculum in West Virginia College- and Career-Readiness Standards for Mathematics.

STEM Readiness Math Standards | West Virginia | West Virginia College- and Career-Readiness Standards for Mathematics

STEM Readiness

STEM Readiness is a rigorous bridge course preparing students for college-level STEM coursework. Complex number arithmetic and algebra, polynomial and rational expressions, inverse and composite functions, exponential and logarithmic inverses, and trigonometry including the Laws of Sines and Cosines form the core content. Probability for decisions, geometric modeling, and the Fundamental Theorem of Algebra complete the preparation.

M.SRM.1Know there is a complex number i such that i^2 = - 1, and every complex number has the form a + bi with a and b real.M.SRM.10Know 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.SRM.11Understand that rational expressions form a system analogous to the rational numbers, closed under addition, subtraction, multiplication and division by a nonzero rational expression; add, subtract, multiply and divide rational expressions.M.SRM.12Use probabilities to make fair decisions (e.g. drawing by lot or using a random number generator).M.SRM.13Analyze 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.SRM.14Derive 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.SRM.15Prove the Laws of Sines and Cosines and use them to solve problems.M.SRM.16Understand 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 or resultant forces).M.SRM.17Graph functions expressed symbolically and show key features of the graph, by hand in simple cases and using technology for more complicated cases.M.SRM.18Graph rational functions, identifying zeros and asymptotes when suitable factorizations are available and showing end behavior.M.SRM.19Graph exponential and logarithmic functions, showing intercepts and end behavior and trigonometric functions, showing period, midline, and amplitude.M.SRM.2Use the relation i^2 = -1 and the commutative, associative and distributive properties to add, subtract and multiply complex numbers.M.SRM.20Write a function that describes a relationship between two quantities.M.SRM.21Compose functions. (e.g., If T(y) is the temperature in the atmosphere as a function of height, and h(t) is the height of a weather balloon as a function of time, then T(h(t)) is the temperature at the location of the weather balloon as a function of time.)M.SRM.22Find inverse functions.M.SRM.23Verify by composition that one function is the inverse of another.M.SRM.24Read values of an inverse function from a graph or a table, given that the function has an inverse.M.SRM.25Produce an invertible function from a non-invertible function by restricting the domain.M.SRM.26Understand the inverse relationship between exponents and logarithms and use this relationship to solve problems involving logarithms and exponents.M.SRM.27Use special triangles to determine geometrically the values of sine, cosine, tangent for π/3, π/4 and π/6, and use the unit circle to express the values of sine, cosine, and tangent for π–x, π+x, and 2π–x in terms of their values for x, where x is any real number.M.SRM.28Use the unit circle to explain symmetry (odd and even) and periodicity of trigonometric functions.M.SRM.29Understand that restricting a trigonometric function to a domain on which it is always increasing or always decreasing allows its inverse to be constructed.M.SRM.3Find the conjugate of a complex number; use conjugates to find moduli and quotients of complex numbers.M.SRM.30Use inverse functions to solve trigonometric equations that arise in modeling contexts; evaluate the solutions using technology, and interpret them in terms of the context.M.SRM.31Prove the addition and subtraction formulas for sine, cosine and tangent and use them to solve problems.M.SRM.4Represent complex numbers on the complex plane in rectangular and polar form (including real and imaginary numbers) and explain why the rectangular and polar forms of a given complex number represent the same number.M.SRM.5Represent addition, subtraction, multiplication and conjugation of complex numbers geometrically on the complex plane; use properties of this representation for computation. (e.g., (-1 + √3 i)^3 = 8 because (-1 + √3 i) has modulus 2 and argument 120°.)M.SRM.6Calculate the distance between numbers in the complex plane as the modulus of the difference and the midpoint of a segment as the average of the numbers at its endpoints.M.SRM.7Solve quadratic equations with real coefficients that have complex solutions.M.SRM.8Extend polynomial identities to the complex numbers. For example, rewrite x^2 + 4 as (x + 2i)(x – 2i).M.SRM.9Know the Fundamental Theorem of Algebra; show that it is true for quadratic polynomials.M.SRM.AAArithmetic and Algebra of Complex Numbers M.SRM.FMFunctions and Modeling M.SRM.PDProbability for Decisions M.SRM.PRRPolynomial, Rational, and Radical Relationships M.SRM.TGTTrigonometry of General Triangles

Example Problems

x = 12 + 9i

What is the imaginary part of x?

Expand the expression

(p - 6q)^4

using the binomial theorem.

Add.
The numerator should be expanded and simplified. The denominator should be expanded.

\frac{5}{x + 2} + \frac{7}{x - 5} =

Consider the following rational function f.

f(x) = \frac{-2x^6 + x^2}{4x^2 - 9}

Determine f's end behavior.

Find the midline equation of the following:

y = 5\cos(2x)

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M.SRM: STEM Readiness

STEM Readiness