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.

8

Grade 8

8.1Define the real number system as composed of rational and irrational numbers.8.10Compare proportional and non-proportional linear relationships represented in different ways (algebraically, graphically, numerically in tables, or by verbal descriptions) to solve real-world problems.8.11Solve multi-step linear equations in one variable, including rational number coefficients, and equations that require using the distributive property and combining like terms.8.12Solve systems of two linear equations in two variables by graphing and substitution.8.13Determine whether a relation is a function, defining a function as a rule that assigns to each input (independent value) exactly one output (dependent value), and given a graph, table, mapping, or set of ordered pairs.8.14Evaluate functions defined by a rule or an equation, given values for the independent variable.8.15Compare properties of functions represented algebraically, graphically, numerically in tables, or by verbal descriptions.8.16Construct a function to model a linear relationship between two variables.8.17Analyze the relationship (increasing or decreasing, linear or non-linear) between two quantities represented in a graph.8.18Construct and interpret scatter plots for bivariate measurement data to investigate patterns of association between two quantities, describing patterns in terms of positive, negative, or no association, linear and non-linear association, clustering, and outliers.8.19Given a scatter plot that suggests a linear association, informally draw a line to fit the data, and assess the model fit by judging the closeness of the data points to the line.8.2Locate rational approximations of irrational numbers on a number line, compare their sizes, and estimate the values of the irrational numbers.8.20Use a linear model of a real-world situation to solve problems and make predictions.8.21Construct and interpret a two-way table summarizing data on two categorical variables collected from the same subjects, using relative frequencies calculated for rows or columns to describe possible associations between the two variables.8.22Verify experimentally the properties of rigid motions (rotations, reflections, and translations): lines are taken to lines, and line segments are taken to line segments of the same length; angles are taken to angles of the same measure; and parallel lines are taken to parallel lines.8.23Use coordinates to describe the effect of transformations (dilations, translations, rotations, and reflections) on two-dimensional figures.8.24Given a pair of two-dimensional figures, determine if a series of dilations and rigid motions maps one figure onto the other, recognizing that if such a sequence exists the figures are similar; describe the transformation sequence that exhibits the similarity between them.8.25Analyze and apply properties of parallel lines cut by a transversal to determine missing angle measures.8.26Informally justify the Pythagorean Theorem and its converse.8.27Apply the Pythagorean Theorem to find the distance between two points in a coordinate plane.8.28Apply the Pythagorean Theorem to determine unknown side lengths of right triangles, including real-world applications.8.29Informally derive the formulas for the volume of cones and spheres by experimentally comparing the volumes of cones and spheres with the same radius and height to a cylinder with the same dimensions.8.3Develop and apply properties of integer exponents to generate equivalent numerical and algebraic expressions.8.30Use formulas to calculate the volumes of three-dimensional figures (cylinders, cones, and spheres) to solve real-world problems.8.4Use square root and cube root symbols to represent solutions to equations.8.5Estimate and compare very large or very small numbers in scientific notation.8.6Perform operations with numbers expressed in scientific notation, including problems where both decimal and scientific notation are used.8.7Determine whether a relationship between two variables is proportional or non-proportional.8.8Graph proportional relationships.8.9Interpret y = mx + b as defining a linear equation whose graph is a line with m as the slope and b as the y-intercept.

1-on-1 AI tutoring aligned to 8. 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.

Free for teachers, forever →