Stony Brook mathematics.
Master the method.
Start with 7 days free in the Woody Calculus Mastery Lab.
Video lessons. Complete worked solutions. Direct guidance. Bring your Stony Brook coursework to Woody—and build a method backed by 25+ years of university teaching.
7 days free, then $89/month. Private one-on-one sessions are separate.
Look inside the Mastery Lab
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Mathematics support for Stony Brook
Find your subject, match your MAT or AMS course, and start your study plan inside the Mastery Lab.
- Calculus IIIntegration, washers, shells, and series
- Calculus IIIMultivariable and vector calculus
- Differential EquationsODEs, systems, and Laplace transforms
- Linear AlgebraMatrices, transformations, and proofs
- Abstract AlgebraGroups, rings, fields, and structure
- Real AnalysisLimits, convergence, and measure
- Galois TheoryField extensions and polynomial symmetry
- Number TheoryCongruences, equations, and proofs
Start with the work in front of you. An integral, a differential equation, a matrix calculation, or a proof—learn how to make the next decision yourself.
Look inside the Mastery Lab.
See the video classrooms, complete solutions, and ways to ask Woody for help. Then use your trial to work on your current Stony Brook assignment or exam review.
Watch on YouTube if the player does not load
See every step.
Video classrooms and complete worked homework and exam solutions show how to begin, choose a method, and finish.
Ask Woody.
Get direct chat guidance, community support, and live Q&A when available. Bring the step you cannot explain.
Build independence.
Train pattern recognition, clean setup, formula fluency, and proof writing through structured practice.
Explore the lessons, study a worked solution, and bring Woody your next question.
7 days free, then $89/month.
Different course routes.
The same need for clear reasoning.
At Stony Brook, the subject name is only the starting point. MAT 132 and AMS 161 both address second-semester calculus, while MAT 203 and AMS 261 develop multivariable work. MAT 303, MAT 308, and AMS 361 approach differential equations through different course structures. Bring your exact number and syllabus so your practice fits your class.
MAT 307–308 combines multivariable calculus, linear algebra, and differential equations. If your assignment blends several ideas, identify which part is geometry, which part is algebra, and which method completes the solution. Build those connections instead of treating each formula as a separate fact.
Stony Brook students already use the Mastery Lab for homework, quizzes, midterms, finals, and advanced mathematics. Start with a complete worked example, practice the decisions, and ask Woody about the first step you cannot explain.
Make this week’s practice specific
- MAT 132 / AMS 161: recognize the feature that suggests an integration method or convergence test.
- MAT 203 / AMS 261: draw the region and explain the bounds before integrating.
- MAT 308 / AMS 361: connect the equation, matrix method, and initial conditions.
- MAT 313 / MAT 320: state the definition or theorem that moves your proof forward.
Course references follow Stony Brook’s Mathematics and Applied Mathematics and Statistics listings. Your syllabus determines the scope and pacing of your section.
From Calculus II to advanced mathematics.
Build a method that carries forward.
Choose your subject. Open the course details for Stony Brook numbers, names, and practical study priorities.
Calculus II
Know why an integration technique or series test fits. Turn mixed exam problems into decisions you can explain.
With Woody: Recognize the pattern, set up the method, and check the result.
Course details and topics
MAT 132: Calculus II and AMS 161: Applied Calculus II are important Stony Brook routes through integration and series. The three-course sequence splits related work between MAT 126: Calculus B and MAT 127: Calculus C: integral calculus in 126, then series and differential-equation models in 127.
With Woody, identify the feature that suggests substitution, parts, partial fractions, or a convergence test. For volume problems, sketch the solid before choosing washers or shells. Rework mixed practice until you can explain the first step without relying on a chapter heading.
Bring your exact course and syllabus. AMS 161 includes applied modeling and Fourier-series material; the MAT and AMS topic order should not be treated as identical.
- Integration by parts, substitution, and partial fractions
- Volumes by disks, washers, and cylindrical shells
- Improper integrals, sequences, and convergence tests
- Power series, Taylor series, and endpoint checks
- Differential-equation models; AMS 161 Fourier series as assigned
Stony Brook MAT 132 Stony Brook MAT 126 Stony Brook MAT 127 Stony Brook AMS 161
Calculus III & Vector Calculus
Connect geometry to the calculation. Build bounds and choose coordinates with a clear picture of what you are measuring.
With Woody: Draw the situation, choose coordinates, and keep orientation clear.
Course details and topics
MAT 203: Calculus III with Applications and AMS 261: Applied Calculus III develop multivariable and vector calculus. MAT 307: Multivariable Calculus with Linear Algebra combines this material with a more intensive treatment of matrices and vector spaces.
With Woody, sketch the domain before writing an integral. Explain where your limits come from, what the integrand measures, and why a coordinate change helps. For vector-calculus problems, distinguish a line integral from flux and check the orientation before using a theorem.
MAT 307 students can also work on the linear-algebra ideas that support the calculation. Bring your course number so practice follows your route and the level of explanation your instructor expects.
- Vectors, planes, surfaces, and geometric setup
- Partial derivatives, gradients, and optimization
- Double and triple integrals; coordinate changes
- Line integrals, flux, and orientation
- Green’s, Gauss’, and Stokes’ theorems
Differential Equations
Recognize the equation, choose the method, and keep initial conditions organized. Explain what the solution means.
With Woody: Classify first, solve carefully, and verify in the original equation.
Course details and topics
MAT 303: Calculus IV with Applications is a differential-equations course. AMS 361: Applied Calculus IV: Differential Equations is the applied route. MAT 308: Differential Equations with Linear Algebra integrates ODE theory with determinants, eigenvectors, and diagonalization.
With Woody, separate the decision from the calculation: identify order, linearity, coefficients, and conditions before choosing a technique. Keep the homogeneous and particular solutions distinct, then test the final answer.
Prepare for systems, transforms, and series using your instructor’s actual problem types. MAT 303 includes Fourier series; AMS 361 also lists partial differential equations. MAT 308 puts greater emphasis on the theoretical connection between linear algebra and differential equations.
- First-order separable, exact, and linear equations
- Higher-order equations and particular solutions
- Eigenvalues, eigenvectors, and linear systems
- Laplace transforms, power series, and initial conditions
- Fourier series and PDE connections where assigned
Linear Algebra
Move between row operations, vector spaces, and linear maps. Strengthen computation and proof together.
With Woody: Describe the solution space and justify the method you use.
Course details and topics
MAT 211: Introduction to Linear Algebra and AMS 210: Applied Linear Algebra build the matrix and vector-space foundation. MAT 310: Linear Algebra develops the theory further, while MAT 315: Advanced Linear Algebra is the intensive advanced-track alternative.
With Woody, connect each computation to a mathematical statement. Explain why a set spans, why vectors are independent, and what an eigenvector reveals about a transformation. A row-reduced matrix should lead to a clear description of the solution set.
For MAT 310 or 315, practice complete arguments about linear maps, inner products, and canonical forms. MAT 315 also extends into quotient spaces and multilinear ideas. Bring your syllabus and proof attempt to match the work to your course.
- Elimination, consistency, and solution sets
- Subspaces, bases, dimension, and rank
- Eigenvalues, eigenvectors, and diagonalization
- Inner products, orthogonality, and linear maps
- MAT 310/315: proof, duality, and canonical forms
Stony Brook MAT 211 Stony Brook AMS 210 Stony Brook MAT 310 Stony Brook MAT 315
Abstract & Applied Algebra
Recognize groups, rings, and quotient structures. Turn examples into precise, justified proofs.
With Woody: Name the structure, check the hypotheses, and explain every implication.
Course details and topics
MAT 313: Abstract Algebra develops groups, rings, homomorphisms, quotients, and fields. MAT 314: Abstract Algebra II continues through modules, field extensions, and Galois theory. MAT 312 / AMS 351: Applied Algebra connects algebraic structure with topics such as coding and modular arithmetic.
With Woody, unpack the definition before reaching for a theorem. Test proposed statements on concrete groups or rings, distinguish a subgroup from an ideal, and explain why a quotient construction is well-defined.
Bring your assigned theorem list so your solution uses the tools available in your class. If proof writing is the obstacle, the logic and set-language skills developed in MAT 200 and MAT 250 can be reviewed alongside your current algebra.
- Groups, subgroups, and homomorphisms
- Rings, ideals, and quotient constructions
- Polynomials, factorization, and fields
- MAT 314: modules and field extensions
- MAT 312 / AMS 351: algebraic applications
Real Analysis
Replace a plausible calculation with a rigorous argument. Make quantifiers, convergence, and assumptions explicit.
With Woody: Separate what is given, what you may choose, and what you must prove.
Course details and topics
MAT 319: Foundations of Analysis and MAT 320: Introduction to Analysis build rigorous one-variable reasoning. MAT 322: Analysis in Several Dimensions develops multivariable theory. MAT 324: Real Analysis moves into Lebesgue measure, integration, and function spaces.
With Woody, translate a definition into the exact statement your proof must establish. Identify which quantities depend on others before choosing an estimate. Use counterexamples to test whether a hypothesis can be removed.
Match the practice to your level: an epsilon argument in MAT 319/320, an inverse-function argument in MAT 322, or a measure-and-integration question in MAT 324. Work toward explanations you can reproduce independently rather than a collection of proofs learned by appearance.
- Limits, completeness, continuity, and convergence
- Quantifiers, epsilon arguments, and counterexamples
- Differentiation and integration proofs
- MAT 322: inverse/implicit functions and differential forms
- MAT 324: Lebesgue measure, integration, and function spaces
Stony Brook MAT 319 Stony Brook MAT 320 Stony Brook MAT 322 Stony Brook MAT 324
Galois Theory
Track the base field, extension degree, and automorphisms. Make each step in the correspondence meaningful.
With Woody: Identify the extension and justify the structure before calculating.
Course details and topics
MAT 314: Abstract Algebra II explicitly includes an introduction to Galois theory, alongside modules and the theory of fields and field extensions.
With Woody, start by naming the base field and polynomial. Establish irreducibility before using it to determine a degree. When describing automorphisms, explain which choices preserve the algebraic relations.
Build field diagrams one justified inclusion at a time. Check the conditions needed for the correspondence between subgroups and intermediate fields, then connect the picture to the original equation. Bring your current theorem list and attempted solution so the explanation fits your instructor’s treatment.
- Minimal polynomials and irreducibility
- Field extensions and the tower law
- Splitting fields and automorphisms
- Fixed fields and Galois correspondence
- Normality, separability, and solvability as assigned
Number Theory
Use divisibility, congruences, and examples to choose a productive argument. Explain why every case is covered.
With Woody: Check the arithmetic assumptions and justify each modular step.
Course details and topics
MAT 311: Number Theory covers arithmetic questions involving congruences, quadratic residues, Diophantine equations, continued fractions, and primes. The department’s individual course page also labels it Introduction to Number Theory.
With Woody, decide whether a divisibility argument, modular calculation, or contradiction gives the cleanest path. Check coprimality before taking a modular inverse and explain the hypothesis of each theorem you use.
Small examples can suggest a pattern; the final proof must establish it for the entire stated class of integers. Bring the exact question and your attempt so work focuses on the missing reasoning. Connect number-theory methods to your algebra background when groups, rings, or polynomial structure provide a better explanation.
- Divisibility and properties of prime numbers
- Congruences and modular inverses
- Quadratic residues and quadratic forms
- Diophantine equations and continued fractions
- Number-theoretic functions and proof writing
More of Stony Brook’s advanced mathematics.
Proof foundations: MAT 200: Logic, Language and Proof and MAT 250: Introduction to Advanced Mathematics. Practice quantifiers, induction, contradiction, sets, functions, and the difference between an example and a general argument.
Applied analysis and PDEs: MAT 341: Applied Real Analysis connects differential equations with Fourier series, separation of variables, and mathematical physics. Explain the domain and conditions before choosing a representation, then interpret what your solution says.
Complex analysis: MAT 342: Applied Complex Analysis. Connect analytic functions, contour integration, residues, and conformal maps to the hypotheses that make each method valid.
Dynamics: MAT 351: Differential Equations: Dynamics and Change. Work on long-term behavior, stability, iterated maps, and chaos. For a deeper visual connection, explore Woody’s chaos theory and Lorenz system essay.
Topology and geometry: MAT 364: Topology and Geometry; MAT 464: Foundations of Topology; and MAT 362: Differential Geometry of Surfaces. Build geometric intuition while keeping continuity, compactness, curvature, and proof assumptions precise. See how orientation matters in the Möbius strip and Stokes’ theorem.
Applied algebra and algorithms: MAT 312 / AMS 351: Applied Algebra. Connect algebraic structures with computation and explain why an algorithm or construction works. MAT 373: Analysis of Algorithms adds mathematical questions about efficiency, complexity, and graph-based methods; bring the reasoning or proof you want to understand.
Additional help with combinatorics: AMS 301: Finite Mathematical Structures. Bring the counting, graph, or discrete-mathematics problem you are working on so Woody can help you organize its structure.
Share your current syllabus and a problem you have attempted to identify the relevant lessons and plan your next practice.
Course names and numbers checked against Stony Brook’s official mathematics course pages and AMS course listings in September 2026. Use the university catalog and your syllabus for current requirements and section details.
Bring the problem you need to understand today.
Study a complete example, practice the reasoning, and ask your next question.
Recognize the pattern.
Choose the method.
Do the work.
Fast-moving lectures and approaching exams can turn studying into a rush for answers. The Lab gives you a way to slow down the decisions that matter, then practice until you can make them independently.
Build clean setup, formula fluency, and complete reasoning alongside your calculations. The same habits support an integration problem, a matrix computation, or a proof.
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Start with your Stony Brook work.
Bring your MAT or AMS course number, syllabus, current assignment, and next exam date. Choose the topic you need to understand this week.
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Explain your first move.
For an integral, identify what suggests the method. For a differential equation, classify its structure. For a proof, name the definition or theorem you plan to use.
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Rehearse a complete solution.
Study the example, rewrite it 3–5 times, and say each step aloud. Explain the decisions as well as the calculations. For a proof, justify every implication.
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Use the method independently.
Put the example away and try a fresh problem. Check the result and assumptions. Bring Woody your attempt and the first step you cannot explain.
Make progress this semester.
Start with your Stony Brook work.
Your next homework set or exam review gives you a place to start. Use the Mastery Lab to find the lesson, follow a complete solution, and ask Woody about the reasoning you need to understand.
- Choose your current topic. Match your MAT or AMS assignment to the relevant subject lessons.
- Learn from a complete example. Follow the setup, method, calculation, and final check.
- Ask Woody a specific question. Share your attempt and identify where the reasoning breaks down.
- Try the method independently. Work a new problem and use the result to plan your next practice.
7 days free, then $89/month. Private sessions are separate.

Private instruction for Stony Brook students.
Work one-on-one with Woody, backed by 25+ years teaching university mathematics. Build a focused plan for your Stony Brook coursework in Calculus II and above, differential equations, linear algebra, abstract algebra, real analysis, and advanced mathematics.
Get weekly one-on-one guidance, personalized exam strategy, detailed feedback, and accountability for your course.
Begin in the Mastery Lab. Students in Calculus II, Calculus III, Differential Equations, Linear Algebra, Abstract Algebra, Real Analysis, Galois Theory, Number Theory, and related advanced courses may then apply for individual instruction.
Private sessions are separate from membership and carry a premium fee. Availability is limited, application and approval are required, and Lab enrollment does not guarantee a private place.
- Join the Mastery Lab.
- Bring your course and goals.
- Apply for weekly private sessions.
Already a Lab member? Read the private instruction details.
Know what you are joining.
Where should Stony Brook students begin?
Bring your MAT or AMS course number and the homework topic or exam review you are working on now. Start your Mastery Lab trial, study a relevant example, and ask Woody which skill to practice next.
Do you help with both MAT and AMS calculus courses?
Yes. Calculus support includes MAT 132 and AMS 161, the MAT 126–127 route, MAT 203 and AMS 261 multivariable calculus, and MAT 307 Multivariable Calculus with Linear Algebra. Share your exact course and syllabus so the guidance fits your section.
Can you help with MAT 303, MAT 308, and AMS 361?
Yes. These differential-equation routes involve different course structures. Work on recognizing the equation, selecting a method, applying initial conditions, and checking the solution. Bring your current problem to match the depth and tools your instructor expects.
Is linear algebra a core subject?
Yes. Support includes MAT 211, MAT 310, MAT 315, and AMS 210. Connect matrix calculations to solution spaces, bases, eigenvalues, transformations, and the proof or interpretation the problem requires.
What about abstract algebra, Galois theory, and number theory?
Support includes MAT 313 Abstract Algebra, MAT 314 Abstract Algebra II, and MAT 311 number theory. MAT 314 explicitly includes Galois theory. Bring your current definitions, theorems, and proof attempt so you can practice a complete argument.
Can you help with real analysis and advanced applied mathematics?
Yes. Support includes MAT 319 and MAT 320 analysis, MAT 322 multivariable analysis, MAT 324 real analysis and measure theory, and MAT 341 applied real analysis. Complex analysis, dynamics, geometry, topology, and applied algebra are also supported.
What can I use during the seven-day trial?
Use the subject lessons, complete worked solutions, direct chat guidance, and community support. Live Q&A is available when scheduled. Ask Woody about the resources for your exact topic. After the seven-day free trial, membership is $89 per month; review the membership terms on Skool when you join.
Are private sessions included in Lab membership?
Private weekly one-on-one instruction is a separate premium service. Join the Mastery Lab first, then apply. Availability is limited and approval is required; membership does not guarantee a private place.
Is Woody Calculus affiliated with Stony Brook University?
No. Woody Calculus is an independent education service. It is not affiliated with, sponsored by, or endorsed by Stony Brook University. Course references identify the students and subjects served.
Strengthen the tools the next course assumes.
MAT 131: Calculus I develops the limits, derivatives, and introductory integration used in later Stony Brook courses. Revisit an earlier idea when it interrupts your current work, then return to the problem you are trying to solve.
Woody’s current private instruction focuses on Calculus II and above. Use the Calculus I foundations resources to review earlier material, or explore the calculus resource hub.
Go deeper into the mathematics.
Connect your Stony Brook coursework to the ideas behind it with these visual lessons and mathematical essays.
Calculus IIGabriel’s Horn: Finite Volume, Infinite Surface AreaRead the essay
Multivariable calculusLine Integrals and Vector FieldsRead the essay
Differential equations & physicsFourier Series: Harmonics, Sound, Heat, and Quantum MechanicsRead the essay
Real analysisThe Cantor Set: Infinite Points, Zero LengthRead the essay
Abstract algebraGalois Theory: Hidden Symmetry and the QuinticRead the essay
Calculus IITaylor Series: Polynomial Approximation and Mathematical Time TravelRead the essay Nonlinear dynamicsChaos Theory: The Lorenz System and Lyapunov ExponentsRead the essay
Learn the method.
Put it to work at Stony Brook.
Bring your next integral, differential equation, matrix problem, or proof. Study the reasoning with Woody and practice applying it. Your first seven days in the Mastery Lab are free.
7 days free, then $89/month.