Harvard mathematics.
Master the method.
Start with 7 days free in the Woody Calculus Mastery Lab.
Video lessons. Complete worked solutions. Direct guidance. Bring your Harvard course and the problem you are working on. Learn how to choose the method, explain the setup, and work independently.
7 days free, then $89/month. Private one-on-one sessions are separate.
Look inside the Mastery Lab Explore private one-on-one instruction ↓Mathematics support for Harvard
Find your subject, then bring your course and current question to the Mastery Lab.
- Calculus IIIntegration, applications, and infinite series
- Calculus IIIMultivariable and vector calculus
- Differential EquationsODE methods, systems, and models
- Linear AlgebraMatrices, vector spaces, and transformations
- Abstract AlgebraGroups, rings, fields, and proofs
- Real AnalysisLimits, convergence, and rigorous calculus
- Galois TheoryField extensions and polynomial symmetry
- Number TheoryPrimes, congruences, and integer equations
Start with your course: MATH 1b for the second calculus stage, then find your multivariable or differential-equations route below.
Look inside the Mastery Lab.
See the subject classrooms, complete worked solutions, and ways to ask Woody for help. Find out how to turn the Lab into a study routine for your current Harvard course.
Watch on YouTube if the player does not load
See every step.
See the setup, method choice, solution, and checks. Learn what to look for when a new problem changes the details.
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.
Know the first step.
Understand the next one.
Harvard’s Math 1b develops integration, infinite series, and differential equations.
Math 21a moves into multivariable calculus; 21b combines linear algebra and differential equations. The combined title matters: bring the current unit so your practice addresses the matrix method, equation, or connection you actually need.
Math 112 introduces real analysis and proof, while 122 and 123 develop algebra. In 123, field extensions lead to Galois theory. Start in the Lab with one difficult decision or incomplete proof, then learn how to make the next step yourself.
Bring one question. Build a method.
- Calculus II: What clue suggests the technique?
- Calculus III: What does the region look like?
- Differential equations: Which method fits the structure?
- Proofs: What do the assumptions let you establish?
Bring your course number, current assignment, and next exam date. Practice the reasoning, then test it independently.
Know your course.
Build the method behind it.
Find the course you are taking. Open its details for Harvard’s course names, numbers, and focused ways to prepare.
Calculus II
For MATH 1b: choose the technique before doing the algebra. Build a repeatable process for integrals, applications, and series.
With Woody: Explain the clue, choose a method, and check the result.
Course details and topics
- MATH 1b — Integration, Series and Differential Equations
- Substitution and integration by parts
- Trigonometric substitution and partial fractions
- Volumes by shells and washers
- Improper integrals and convergence tests
- Taylor series and approximation
Calculus III & Vector Calculus
For MATH 21a: turn a picture into a setup you can explain. Practice coordinates, bounds, and the meaning of each integral.
With Woody: Draw the region, label the variables, and justify the theorem you use.
Course details and topics
- MATH 21a — Multivariable Calculus
- Partial derivatives and the chain rule
- Optimization
- Double and triple integrals
- Line and surface integrals
- Green, Stokes, and divergence theorems
Differential Equations
For MATH 21b and related options below: an equation becomes more manageable when you recognize its structure. Train the first decision before memorizing steps.
With Woody: Identify the equation type, solve systematically, and verify the initial conditions.
Course details and topics
- MATH 21b — Linear Algebra and Differential Equations
- MATH 19a — Modeling and Differential Equations for the Life Sciences
- First-order methods
- Higher-order linear equations
- Systems and eigenvalues
- Laplace transforms where assigned
- Qualitative behavior and stability
Linear Algebra
For MATH 21b: connect the calculation to the concept. Row reduction matters more when you understand what it says about the system or transformation.
With Woody: Translate between matrices, equations, vector spaces, and proofs.
Course details and topics
- MATH 21b — Linear Algebra and Differential Equations
- Linear systems and row reduction
- Span, independence, and bases
- Linear transformations
- Eigenvalues and diagonalization
- Inner products and orthogonality
Abstract Algebra
For MATH 122 and related options below: work from the definitions and make every implication explicit. Build proofs that establish exactly what the question asks.
With Woody: Identify the structure, unpack the assumptions, and choose the theorem that fits.
Course details and topics
- MATH 122 — Algebra I: Theory of Groups and Vector Spaces
- MATH 123 — Algebra II: Theory of Rings and Fields
- Groups and subgroups
- Homomorphisms and quotients
- Rings and ideals
- Fields and polynomials
- Direct proof and counterexamples
Real Analysis & Advanced Calculus
For MATH 112: move from a familiar calculus fact to a precise argument. Practice controlling quantities and checking every hypothesis.
With Woody: Write the target statement first, then build the estimates and logical steps.
Course details and topics
- MATH 112 — Introductory Real Analysis
- Sequences and limits
- Continuity and compactness
- Epsilon arguments
- Differentiation and integration
- Convergence of functions
Galois Theory
For MATH 123: connect field extensions with the symmetries of polynomial roots. Keep the fields, groups, and maps clearly labeled.
With Woody: Draw the field relationships and explain how the correspondence applies.
Course details and topics
- MATH 123 — Algebra II: Theory of Rings and Fields
Math 123 explicitly includes the basic theorems of Galois theory.
- Field extensions and degrees
- Minimal and irreducible polynomials
- Splitting fields
- Automorphisms and fixed fields
- Galois correspondence
Number Theory
For MATH 124: learn to move between arithmetic examples and general arguments. A clean congruence calculation should lead to a justified conclusion.
With Woody: State the divisibility claim, select the tool, and explain why it works.
Course details and topics
- MATH 124 — Number Theory
- Divisibility and the Euclidean algorithm
- Congruences
- Prime factorization
- Integer equations
- Proofs using arithmetic structure
Course names and numbers checked against official university sources on 2026-09-25. Honors and graduate options are identified below. Follow your syllabus for the topics and current offering of your section.
Official course references
Make progress on this week’s topic.
Open the Lab, study the method, and ask your next question.
Recognize the pattern.
Choose the method.
Do the work.
A solution can look clear while you are reading it and still be hard to reproduce. Train the decisions that connect one step to the next, then apply them to a different problem.
Build clean setup, formula fluency, and complete reasoning alongside your calculations. The same habits support an integration problem, a matrix computation, or a proof.
Read Woody’s complete study method →-
Bring your current Harvard work.
Start with your course number, syllabus, current problem, and next exam date. Choose the lesson that addresses the decision you need to understand.
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Explain the first decision.
For an integral, name the clue that suggests the technique. For a differential system, explain the matrix setup. For a proof, identify what you know and what you must show.
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Rehearse the reasoning.
Reproduce a complete solution 3–5 times while saying the steps aloud. Compare your work, correct errors, and explain why each step is valid.
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Solve a fresh problem.
Put the example away and try another problem. Bring Woody the precise step that stops you, then return to the work and apply what you learned.
Give your free trial a purpose.
Start with one Harvard problem.
Choose a problem you need to understand this week. Watch a complete solution, explain the setup, and practice the method. Use your questions to guide your next step.
- Find your subject. Match your Harvard topic to a lesson.
- Study a complete solution. Follow the choices as well as the calculations.
- Ask Woody. Bring the step you cannot yet explain.
- Test your understanding. Solve a new problem without the example.
7 days free, then $89/month. Private sessions are separate.
Private instruction for Harvard students.
Work one-on-one with Woody, backed by 25+ years teaching university mathematics. Develop your understanding, study habits, and exam strategy in Calculus II and above, differential equations, linear algebra, abstract algebra, real analysis, Galois theory, or number theory.
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.
Have a question about the right next step? Contact Woody directly.
- 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 I start if I need a Harvard calculus tutor?
Start your 7-day free trial in the Mastery Lab. Choose the topic you need this week, study a complete example, and try another problem. Ask Woody about the step you cannot yet explain.
Is Harvard Math 21b only linear algebra?
No. Math 21b combines linear algebra and differential equations. This guide identifies both subjects and uses Math 21a for multivariable calculus.
Can I get help with volumes by shells and washers?
Yes. Draw the region and axis of rotation first, then compare a slice perpendicular to the axis with a shell parallel to it. Explain your radius, height, and bounds before integrating.
Do you help with advanced mathematics and proofs?
Yes. Linear algebra, abstract algebra, real analysis, Galois theory, and number theory are core areas of Woody’s instruction. For advanced or graduate courses, bring the syllabus and specific topic to check the fit.
What does the Mastery Lab include, and what does it cost?
Start with 7 days free, then $89 per month. Membership includes subject video lessons, complete worked solutions, community support, direct chat guidance, and live Q&A when scheduled. Private one-on-one sessions are separate.
Does every course number have its own recorded classroom?
Available recordings vary by subject and topic. Course references identify mathematics you can bring to Woody; they do not promise a separate recording archive for every class. Use the tour and trial to see how the resources fit your syllabus.
Is private instruction available for Harvard students?
Yes, with limited availability. Join the Mastery Lab first, then apply for weekly private instruction. Sessions have a separate premium fee and require available space and approval. Membership does not guarantee a private place.
What if I need help with Calculus I or an earlier course?
Woody recommends Blue Hovatter for private tutoring through Calculus I. You can also review the earlier calculus resources linked below.
Is Woody Calculus affiliated with Harvard University?
No. Woody Calculus is an independent education service, not affiliated with, sponsored by, or endorsed by the university. Course references identify the students and subjects served.
Build the foundation for what comes next.
For prerequisite review, explore the Calculus I resources. MATH 1a is an earlier calculus foundation; Woody’s main instruction here starts with Calculus II.
Need private tutoring through Calculus I? Woody recommends Blue.
For college algebra, trigonometry, precalculus, and Calculus I, explore private tutoring with Blue Hovatter.
Visit Blue’s tutoring website →Explore the idea behind the method.
Use the Math Library for explanations and connections, then return to your current Harvard problem.
Course and study resources
- Harvard University Calculus II Tutor | Calculus III | Differential Equations | MATH 1B | MATH 21A | MATH 21B | Abstract Algebra | Real Analysis Help
- universities across the United States
- Calculus II
- Calculus III
- Differential Equations
- Linear Algebra
- Abstract Algebra
- Real Analysis
- ★★★★★ 5-star reviews on Google
- Calculus I
- AP Calculus BC
- Apply to Work with a Private Mathematics Professor
- How to Learn Calculus and Advanced Mathematics: A Peak Performance Study Guide
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- Line Integrals and Vector Fields: What They Measure in Calculus III
- Fourier Series Explained: Harmonics, Sound, Heat, and Quantum Mechanics
- Cantor Set Explained: Infinite Points, Zero Length in Real Analysis
- Galois Theory Explained: Hidden Symmetry and the Quintic
- View All Woody Calculus Blog Posts
Official references and student reviews
Learn the method.
Bring it to your Harvard work.
Start with the question you need to understand. Follow the reasoning, ask Woody, and put the method into practice. Your first seven days in the Mastery Lab are free.
7 days free, then $89/month.