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.

G.GCO

Congruence

G.GCO.1Define angle, perpendicular line, parallel line, line segment, ray, circle, and skew in terms of the undefined notions of point, line, and plane. Use geometric figures to represent and describe real-world objects.G.GCO.10Prove, and apply in mathematical and real-world contexts, theorems about parallelograms, including the following:G.GCO.10aOpposite sides of a parallelogram are congruent.G.GCO.10bOpposite angles of a parallelogram are congruent.G.GCO.10cDiagonals of a parallelogram bisect each other.G.GCO.10dRectangles are parallelograms with congruent diagonals.G.GCO.10eA parallelograms is a rhombus if and only if the diagonals are perpendicular.G.GCO.11Construct geometric figures using a variety of tools, including a compass, a straightedge, dynamic geometry software, and paper folding, and use these constructions to make conjectures about geometric relationships.G.GCO.2Represent translations, reflections, rotations, and dilations of objects in the plane by using paper folding, sketches, coordinates, function notation, and dynamic geometry software, and use various representations to help understand the effects of simple transformations and their compositions.G.GCO.3Describe rotations and reflections that carry a regular polygon onto itself and identify types of symmetry of polygons, including line, point, rotational, and self-congruence, and use symmetry to analyze mathematical situations.G.GCO.4Develop definitions of rotations, reflections, and translations in terms of angles, circles, perpendicular lines, parallel lines, and line segments.G.GCO.5Predict and describe the results of transformations on a given figure using geometric terminology from the definitions of the transformations, and describe a sequence of transformations that maps a figure onto its image.G.GCO.6Demonstrate that triangles and quadrilaterals are congruent by identifying a combination of translations, rotations, and reflections in various representations that move one figure onto the other.G.GCO.7Prove two triangles are congruent by applying the Side-Angle-Side, Angle-Side-Angle, Angle-Angle-Side, and Hypotenuse-Leg congruence conditions.G.GCO.8Prove, and apply in mathematical and real-world contexts, theorems about lines and angles, including the following:G.GCO.8aVertical angles are congruent.G.GCO.8bWhen a transversal crosses parallel lines, alternate interior angles are congruent, alternate exterior angles are congruent, and consecutive interior angles are supplementary.G.GCO.8cAny point on a perpendicular bisector of a line segment is equidistant from the endpoints of the segment.G.GCO.8dPerpendicular lines form four right angles.G.GCO.9Prove, and apply in mathematical and real-world contexts, theorems about the relationships within and among triangles, including the following:G.GCO.9aMeasures of interior angles of a triangle sum to 180°.G.GCO.9bBase angles of isosceles triangles are congruent.G.GCO.9cThe segment joining midpoints of two sides of a triangle is parallel to the third side and half the length.G.GCO.9dThe medians of a triangle meet at a point.

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