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.

6.NR.2.6

Describe the impact that inserting or deleting a data point has on the mean and the median of a data set. Create data displays using a dot plot or box plot to examine this impact.

Example Problems

What is the median of the following numbers?

9, 8, 1, 8, 5

Identify any outliers from the following table:

Data Value
84
7
9
8

What is the median of the following numbers?

7, 2, 8, 4, 4, 9

Khan Academy Resources

Calculating the mean Comparing data displays Creating frequency tables Creating dot plots Read histograms Calculating the median: data displays Creating box plots Estimate center using dot plots Effects of shifting, adding, & removing a data point Mean absolute deviation (MAD)Reading dot plots & frequency tables Calculating the mean: data displays Calculating the median Missing value given the mean Calculating the mean Reading box plots Interquartile range (IQR)Create histograms Statistics intro: Mean, median, & mode Constructing a box plot Mean, median, & mode example Reading box plots Impact on median & mean: removing an outlier Mean absolute deviation example Mean absolute deviation (MAD)Worked example: Creating a box plot (even number of data points)Comparing dot plots, histograms, and box plots Worked example: Creating a box plot (odd number of data points)Interquartile range (IQR)Median & range puzzlers Frequency tables & dot plots Missing value given the mean Representing data Impact on median & mean: increasing an outlier Creating a histogram Interpreting a histogram

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Used in classrooms by 100,000+ students at Baltimore County, Plano ISD, Deer Valley USD, KIPP, and districts nationwide.

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