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.

HSF.IF.C.8

Write a function defined by an expression in different but equivalent forms to reveal and explain different properties of the function.

HSF.IF.C.8.aUse the process of factoring and completing the square in a quadratic function to show zeros, extreme values, and symmetry of the graph, and interpret these in terms of a context.HSF.IF.C.8.bUse the properties of exponents to interpret expressions for exponential functions.

Khan Academy Resources

Standard form review Solving quadratics by completing the square Solving quadratics by factoring review Forms of linear equations review Factoring quadratics in any form Completing the square review Factoring quadratics: Difference of squares Factoring quadratics: Perfect squares Factoring by grouping Factoring by common factor review Factoring quadratics: leading coefficient = 1 Factoring simple quadratics review Factoring quadratics: leading coefficient ≠ 1 Solving quadratics by factoring Parallel & perpendicular lines from equation Quadratics by factoring (intro)Convert linear equations to standard form Completing the square (intermediate)Completing the square Difference of squares Factoring quadratics intro Difference of squares intro Quadratics by factoring Factor polynomials: quadratic methods Factor polynomials: quadratic methods (challenge)Factor quadratics by grouping Quadratic word problems (standard form)Zeros of polynomials (with factoring)Interpret quadratic models Solve equations using structure Completing the square (intro)Features of quadratic functions Slope from equation Features of quadratic functions: strategy Interpret change in exponential models: changing units Perfect squares intro Compare features of functions Interpret change in exponential models: with manipulation Factoring quadratics with a common factor Perfect squares Factoring quadratics as (x+a)(x+b) (example 2)Factoring perfect squares Worked example: completing the square (leading coefficient ≠ 1)More examples of factoring quadratics as (x+a)(x+b)Intro to grouping Completing the square Factoring two-variable quadratics: grouping Factoring quadratics by grouping Factoring quadratics: common factor + grouping Factoring quadratics: negative common factor + grouping Factoring perfect squares: negative common factor Factoring difference of squares: two variables (example 2)Solving quadratics by factoring Vertex & axis of symmetry of a parabola Finding the vertex of a parabola in standard form Intro to linear equation standard form Factoring perfect squares: missing values Perfect square factorization intro Factoring quadratics as (x+a)(x+b)Finding zeros of polynomials (example 2)Finding zeros of polynomials (2 of 2)Interpret quadratic models: Factored form Interpreting change in exponential models: changing units Solving quadratics using structure Zeros of polynomials (with factoring): grouping Factoring difference of squares: shared factors Factoring perfect squares: shared factors Difference of squares intro Strategy in factoring quadratics (part 1 of 2)Factoring difference of squares: analyzing factorization Factoring difference of squares: leading coefficient ≠ 1 Strategy in factoring quadratics (part 2 of 2)Interpreting change in exponential models: with manipulation Comparing maximum points of quadratic functions Vertex form introduction Forms & features of quadratic functions Factoring two-variable quadratics: rearranging Solving quadratics by factoring: leading coefficient ≠ 1 Factoring quadratics with a common factor Worked examples: Forms & features of quadratic functions Comparing features of quadratic functions Interpret quadratic models: Vertex form Factoring polynomials: common binomial factor Quadratic word problem: mosquitoes Finding features of quadratic functions Comparing functions: shared features Factoring completely with a common factor Finding zeros of polynomials (1 of 2)Factoring two-variable quadratics Zeros of polynomials (with factoring): common factor Factoring difference of squares: missing values Converting from slope-intercept to standard form Worked example: Rewriting & solving equations by completing the square Worked example: Rewriting expressions by completing the square

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