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.

5.NSF

Number Sense and Operations – Fractions

5.NSF.1Add and subtract fractions with unlike denominators (including mixed numbers) using a variety of models, including an area model and number line.5.NSF.2Solve real-world problems involving addition and subtraction of fractions with unlike denominators.5.NSF.3Understand the relationship between fractions and division of whole numbers by interpreting a fraction as the numerator divided by the denominator (i.e., a/b=a÷b).5.NSF.4Extend the concept of multiplication to multiply a fraction or whole number by a fraction.5.NSF.4aRecognize the relationship between multiplying fractions and finding the areas of rectangles with fractional side lengths.5.NSF.4bInterpret multiplication of a fraction by a whole number and a whole number by a fraction and compute the product.5.NSF.4cInterpret multiplication in which both factors are fractions less than one and compute the product.5.NSF.5Justify the reasonableness of a product when multiplying with fractions.5.NSF.5aEstimate the size of the product based on the size of the two factors.5.NSF.5bExplain why multiplying a given number by a number greater than 1 (e.g., improper fractions, mixed numbers, whole numbers) results in a product larger than the given number.5.NSF.5cExplain why multiplying a given number by a fraction less than 1 results in a product smaller than the given number.5.NSF.5dExplain why multiplying the numerator and denominator by the same number has the same effect as multiplying the fraction by 1.5.NSF.6Solve real-world problems involving multiplication of a fraction by a fraction, improper fraction and a mixed number.5.NSF.7Extend the concept of division to divide unit fractions and whole numbers by using visual fraction models and equations.5.NSF.7aInterpret division of a unit fraction by a non-zero whole number and compute the quotient.5.NSF.7bInterpret division of a whole number by a unit fraction and compute the quotient.5.NSF.8Solve real-world problems involving division of unit fractions and whole numbers, using visual fraction models and equations.

1-on-1 AI tutoring aligned to 5.NSF. 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 →