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.

4.MG.1.d.i

length (inches and feet, feet and yards, inches and yards);

Example Problems

Bernice is planning to build new storage sheds.
Each shed requires 12 wooden beams, and each shed can hold 200 boxes.
She receives a shipment of 2 wooden beams each day.
Shipments can continue for 60 days before they become too expensive.
Bernice wants enough sheds to store at least 1,000 boxes in total.
How many sheds can Bernice build with the maximum number of beams delivered?

Landon's family of 7 people lives in a large house with 4 bathrooms.
In the past month, each person took showers totaling 600 minutes and used an average of 90 liters of shower water.
The cost of water is 0.22 dollars per liter.
How much did Landon's family spend, in total, on shower water last month?

Shannon's household has 3 people (including Shannon) and 2 bathrooms.
Last month, each person showered for an average of 450 minutes total and used an average of 60 liters of shower water.
Water costs 0.18 dollars per liter.
How much money did Shannon's household spend, in total, on shower water last month?

Khan Academy Resources

US Customary units of length review (in, ft, yd, & mi)US customary conversion word problems Convert to smaller units (in, ft, yd, & mi)Converting yards into inches Multi-step unit conversion examples (U.S. Customary)Converting feet to inches

1-on-1 AI tutoring aligned to 4.MG.1.d.i. 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 →