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 3 taught?

This standard is part of the Grade 3 curriculum in Alabama Mathematics Standards.

Grade 3 Math Standards | Alabama | Alabama Mathematics Standards

Grade 3

Multiplication and division within 100 reach fluency, and multi-step word problems apply all four operations. Fractions are introduced through unit fractions and number lines. Area, perimeter, angles, shape attributes, and an introduction to data and probability round out the grade.

3.1Illustrate the product of two whole numbers as equal groups by identifying the number of groups and the number in each group and represent as a written expression.3.10Identify the nearest 10 or 100 when rounding whole numbers, using place value understanding.3.11Use various strategies to add and subtract fluently within 1000.3.12Use concrete materials and pictorial models based on place value and properties of operations to find the product of a one-digit whole number by a multiple of ten (from 10 to 90).3.13Demonstrate that a unit fraction represents one part of an area model or length model of a whole that has been equally partitioned; explain that a numerator greater than one indicates the number of unit pieces represented by the fraction.3.14Interpret a fraction as a number on the number line; locate or represent fractions on a number line diagram.3.15Explain equivalence and compare fractions by reasoning about their size using visual fraction models and number lines.3.16For a given or collected set of data, create a scaled (one-to-many) picture graph and scaled bar graph to represent a data set with several categories.3.17Measure lengths using rulers marked with halves and fourths of an inch to generate data and create a line plot marked off in appropriate units to display the data.3.18Tell and write time to the nearest minute; measure time intervals in minutes (within 90 minutes.)3.19Estimate and measure liquid volumes and masses of objects using liters (l), grams (g), and kilograms (kg).3.2Illustrate and interpret the quotient of two whole numbers as the number of objects in each group or the number of groups when the whole is partitioned into equal shares.3.20Find the area of a rectangle with whole number side lengths by tiling without gaps or overlays and counting unit squares.3.21Count unit squares (square cm, square m, square in, square ft, and improvised or non-standard units) to determine area.3.22Relate area to the operations of multiplication using real-world problems, concrete materials, mathematical reasoning, and the distributive property.3.23Decompose rectilinear figures into smaller rectangles to find the area, using concrete materials.3.24Construct rectangles with the same perimeter and different areas or the same area and different perimeters.3.25Solve real-world problems involving perimeters of polygons, including finding the perimeter given the side lengths and finding an unknown side length of rectangles.3.26Recognize and describe polygons (up to 8 sides), triangles, and quadrilaterals (rhombuses, rectangles, and squares) based on the number of sides and the presence or absence of square corners.3.3Solve word situations using multiplication and division within 100 involving equal groups, arrays, and measurement quantities; represent the situation using models, drawings, and equations with a symbol for the unknown number.3.4Determine the unknown whole number in a multiplication or division equation relating three whole numbers.3.5Develop and apply properties of operations as strategies to multiply and divide.3.6Use the relationship between multiplication and division to represent division as an equation with an unknown factor.3.7Use strategies based on properties and patterns of multiplication to demonstrate fluency with multiplication and division within 100.3.8Determine and justify solutions for two-step word problems using the four operations and write an equation with a letter standing for the unknown quantity. Determine reasonableness of answers using number sense, context, mental computation, and estimation strategies including rounding.3.9Recognize and explain arithmetic patterns using properties of operations.3.DAData Analysis 3.GGeometry 3.MMeasurement 3.OATOperations and Algebraic Thinking 3.ONBTOperations with Numbers: Base Ten 3.ONFOperations with Numbers: Fractions

Example Problems

A truck is traveling at

55 \text{ miles per hour}

.
Write an expression for how many miles the truck travels after

t \text{ hours}

∠w

and

∠x

are supplementary angles.

∠w

measures

170\degree

.
What is the measure of

∠x

Multiply:

83 \times 4 = ?

Bernice is planning to build new storage sheds.
Each shed requires 12 wooden beams, and each shed can hold 200 boxes.
She receives a shipment of 2 wooden beams each day.
Shipments can continue for 60 days before they become too expensive.
Bernice wants enough sheds to store at least 1,000 boxes in total.
How many sheds can Bernice build with the maximum number of beams delivered?

Solve the equation:

6x = 72

1-on-1 AI tutoring aligned to 3. Instant help for students, real-time insights for teachers.

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3: Grade 3

Grade 3