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.

NY-4.MD.1

Know relative sizes of measurement units: ft., in.; km, m, cm. Know the conversion factor and use it to convert measurements in a larger unit in terms of a smaller unit: ft., in.; km, m, cm; hr., min., sec. Given the conversion factor, convert all other measurements within a single system of measurement from a larger unit to a smaller unit. Record measurement equivalents in a two-column table.

Example Problems

The formula for average speed when traveling a distance of d over a time t is:

\frac{d}{t}

Bella says, 'I can run 8 miles per hour!' Winston says, 'I can run 700 feet per minute!'

Which one is faster?

The formula for average speed when traveling a distance of d over a time t is:

\frac{d}{t}

Helen says, 'I can walk 4 kilometers per hour!' Stefan says, 'I can walk 70 meters per minute!'

Who is faster?

The formula for average speed when traveling a distance of d over a time t is:

\frac{d}{t}

Daisy and Eddie are arguing about which one of them is faster.

Daisy says, 'I can bike 9 miles per hour!' and Eddie says, 'I can bike 800 feet per minute!'

Which one is faster?

Khan Academy Resources

Metric units of length review (mm, cm, m, & km)US Customary units of length review (in, ft, yd, & mi)Converting units of time review (seconds, minutes, & hours)Convert to smaller units (sec, min, & hr)Convert to smaller units (in, ft, yd, & mi)Converting yards into inches Multi-step unit conversion examples (U.S. Customary)Multi-step unit conversion examples (metric)Converting metric units of length Metric system: units of distance Converting units of time U.S. customary units: distance Converting feet to inches

1-on-1 AI tutoring aligned to NY-4.MD.1. 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 →