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 MM taught?

This standard is part of the MM curriculum in Alabama Mathematics Standards.

Mathematical Modeling Math Standards | Alabama | Alabama Mathematics Standards

Mathematical Modeling

The full Mathematical Modeling and Statistical Problem-Solving cycles drive the work: students choose real problems, select tools across functions, geometry, statistics, and linear algebra, and interpret results in context. Coordinate geometry, trigonometric ratios, probability, regression, and geometric modeling all appear as resources for solving authentic, student-selected problems.

MM.1Use the full Mathematical Modeling Cycle or Statistical Problem-Solving Cycle to answer a real-world problem of particular student interest, incorporating standards from across the course.MM.10Construct a two-dimensional visual representation of a three-dimensional object or structure.MM.11Plot coordinates on a three-dimensional Cartesian coordinate system and use relationships between coordinates to solve design problems.MM.12Use technology and other tools to explore the results of simple transformations using three-dimensional coordinates, including translations in the x, y, and/or z directions; rotations of 90º, 180º, or 270º about the x, y, and z axes; reflections over the xy, yz, and xy planes; and dilations from the origin.MM.13Create a scale model of a complex three-dimensional structure based on observed measurements and indirect measurements, using translations, reflections, rotations, and dilations of its components.MM.14Use elements of the Mathematical Modeling Cycle to make predictions based on measurements that change over time, including motion, growth, decay, and cycling.MM.15Use regression with statistical graphing technology to determine an equation that best fits a set of bivariate data, including nonlinear patterns.MM.16Create a linear representation of non-linear data and interpret solutions, using technology and the process of linearization with logarithms.MM.17Use the Statistical Problem Solving Cycle to answer real-world questions.MM.18Construct a probability distribution based on empirical observations of a variable.MM.19Construct a sampling distribution for a random event or random sample.MM.2Use elements of the Mathematical Modeling Cycle to solve real-world problems involving finances.MM.20Perform inference procedures based on the results of samples and experiments.MM.21Critique the validity of reported conclusions from statistical studies in terms of bias and random error probabilities.MM.22Conduct a randomized study on a topic of student interest (sample or experiment) and draw conclusions based upon the results.MM.3Organize and display financial information using arithmetic sequences to represent simple interest and straight-line depreciation.MM.4Organize and display financial information using geometric sequences to represent compound interest and proportional depreciation, including periodic (yearly, monthly, weekly) and continuous compounding.MM.5Compare simple and compound interest, and straight-line and proportional depreciation.MM.6Investigate growth and reduction of credit card debt using spreadsheets, including variables such as beginning balance, payment structures, credits, interest rates, new purchases, finance charges, and fees.MM.7Compare and contrast housing finance options including renting, leasing to purchase, purchasing with a mortgage, and purchasing with cash.MM.8Investigate the advantages and disadvantages of various means of paying for an automobile, including leasing, purchasing by cash, and purchasing by loan.MM.9Use the Mathematical Modeling Cycle to solve real-world problems involving the design of three-dimensional objects.

Example Problems

26

‑meter ladder's bottom is sliding toward a wall at

1.5

meters per minute. At a certain instant, the bottom of the ladder is

10

meters from the wall.
What is the rate of change of the distance between the top of the ladder and the ground at that instant (in meters per minute)?

g'(x) = 5g(x)

and

g(3) = 2

Solve the equation.

The image files captured by a drone have a mean size of

2.8 \text{ megabytes}

with a standard deviation of

0.6 \text{ megabytes}

.

What will be the mean of the distribution of file sizes in kilobytes?

1 \text{ megabyte}

equals

1024 \text{ kilobytes}

What is the median of the following numbers?

9, 8, 1, 8, 5

A set of wrist watch prices is normally distributed with a mean of

\$76

and a standard deviation of

\$10

.

What proportion of wrist watch prices are between

\$63

and

\$90

?
You may round your answer to four decimal places.

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MM: Mathematical Modeling

Mathematical Modeling