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.

What grade level is NC.6.NS.3 taught?

This standard is part of the NC curriculum in North Carolina Standard Course of Study - Mathematics.

Are there practice problems for NC.6.NS.3?

Yes, there are 3 practice problems available for NC.6.NS.3 with worked examples.

What learning resources are available for NC.6.NS.3?

There are 27 Khan Academy resources available for NC.6.NS.3, including 19 videos, 8 exercises.

NC.6.NS.3: Apply and extend previous understandings of decimals to develop and fluently use the standard algorithms for addition, subtraction, multipli... | North Carolina Standard Course of Study - Mathematics

Apply and extend previous understandings of decimals to develop and fluently use the standard algorithms for addition, subtraction, multiplication and division of decimals.

Example Problems

Add:

9.4 + 3.7 = ?

Add:

8.6 + 2.9 = ?

Add.

5.3 + 8.1 = ?

Khan Academy Resources

Multiplying decimals like 0.847x3.54 (standard algorithm)Dividing decimals: thousandths Adding & subtracting decimals word problems Divide whole numbers to get a decimal Adding decimals: thousandths Dividing decimals: hundredths Decimal multiplication place value Subtracting decimals: thousandths Adding & subtracting decimals word problem Dividing by a multi-digit decimal Adding three decimals Subtracting decimals: 9.005 - 3.6 Subtracting decimals: 39.1 - 0.794 The 0 & 1st power Long division with decimals Decimal multiplication place value Plotting inequalities Intro to multiplying decimals Dividing a whole number by a decimal Adding decimals word problem Dividing decimals completely Dividing decimals with hundredths Multiplying challenging decimals Dividing whole numbers to get a decimal Adding decimals: 0.822+5.65 Dividing a decimal by a whole number Adding decimals: 9.087+15.31

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NC.6.NS.3: Apply and extend previous understandings of decimals to develop and fluently use the standard algorithms for addition, subtraction, multiplication and division of decimals.