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.

MA.912.DP.3.1

Construct a two-way frequency table summarizing bivariate categorical data. Interpret joint and marginal frequencies and determine possible associations in terms of a real-world context.

Example Problems

The frequency table shows how many cups of coffee employees drank at work:

Cups of Coffee	Number of Employees
0	2
1	6
2	4
3	2
4	1

Which number of cups was least common?

The frequency table shows the number of hours students practiced piano:

Practice Hours	Number of Students
0	4
1	3
2	5
3	2
4	1

How many students practiced at least 2 hours?

The frequency table shows the number of miles each runner completed during training:

Miles Run	Number of Runners
2	1
4	3
6	4
8	2
10	1

How many runners ran fewer than 6 miles?

Khan Academy Resources

Create two-way frequency tables Interpret two-way tables Read two-way frequency tables Conditional distributions Identify marginal and conditional distributions Marginal distributions Analyze two-way frequency tables Create two-way relative frequency tables Two-way frequency tables and Venn diagrams Marginal and conditional distributions Interpreting two-way tables Two-way relative frequency tables

1-on-1 AI tutoring aligned to MA.912.DP.3.1. 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 →