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.

S.7

Topic 7: Confidence Intervals

S.7.aRead and write confidence intervals using two different forms: point estimate plus/minus margin of error (error bound) and interval notation.S.7.bCalculate and interpret confidence intervals for estimating a population mean and a population proportion.S.7.cCalculate the margin of error (error bound) using sample statistics.S.7.dPredict if a confidence interval will become wider or narrower given larger or smaller sample sizes as well as higher or lower confidence levels.S.7.eFind the point estimate and margin of error (error bound) when given a confidence interval.S.7.fEstimate the sample size necessary to estimate a population mean.S.7.gRecognize the difference between the sample mean and the population mean, as well as the difference between the sample standard deviation and standard error of the mean.S.7.hFind critical values for z and t given a value of alpha and degrees of freedom.S.7.iEstimate the sample size necessary to estimate a population proportion.

1-on-1 AI tutoring aligned to S.7. 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 →