Math & TeachingBusiness Math Essentials
Percentages, ratios, interest, discount chains, weighted averages, unit rates, break-even and growth: 8 hands-on labs that make everyday business maths automatic.
BeginnerCertificate$9.99
Math & Teaching
Mathematics you can see working
A spreadsheet is a remarkably good place to learn mathematics: change one input and you watch every dependent value move. These courses use that to make ideas concrete, from linear functions and sequences to probability paradoxes and differential equations. You build each model yourself and the checker confirms every cell.
The 26 courses cover business maths, algebra and functions, geometry and trigonometry, probability and combinatorics, calculus and numerical methods, linear algebra and vectors, logic and sets, game theory, voting and apportionment, Markov chains, cryptography basics and chaos. For learners preparing for admissions tests there is GMAT- and GRE-style quantitative practice, and teachers will find a course on gradebooks and class analytics.
Courses in Math & Teaching
Math & Teaching
Math & TeachingProbability & Combinatorics for Decisions
Complements, counting, conditional probability, Bayes, expected value, binomial, Poisson and normal: 8 labs that turn chance into better business decisions.
IntermediateCertificate$9.99
Math & TeachingExcel for Teachers: Gradebooks & Class Analytics
Build a weighted gradebook, drop the lowest score, assign letter grades, curve a test, track attendance and analyse your test questions, every cell checked instantly.
BeginnerCertificate$9.99
Math & TeachingAlgebra & Functions with Spreadsheets
Learn algebra by computing it: expressions, linear functions and graphs, systems of equations, quadratics, exponential growth, logarithms, inequalities and a numerical root finder in 8 hands-on labs.
BeginnerCertificate$9.99
Math & TeachingGMAT & GRE-Style Quant Practice
Percent traps, ratios and mixtures, work and speed, interest, statistics, counting, number properties and data interpretation: 8 labs of word problems solved in a spreadsheet. Independent practice, not affiliated with GMAC or ETS; GMAT and GRE are trademarks of their owners.
IntermediateCertificate$9.99
Math & TeachingActuarial Math Basics: Life Tables, Annuities & Premiums
Effective rates and discount factors, annuities certain, life tables, life expectancy, term insurance and pure endowments, life annuities, net level premiums and reserves: 8 graded labs that take one 10-year policy from interest theory to its reserve chart.
IntermediateCertificate$9.99
Math & TeachingCalculus with Spreadsheets: Rates of Change, Optimisation & Area
Learn calculus by computing it: difference quotients, derivatives and tangents, marginal analysis, profit optimisation, elasticity, trapezoid and Simpson integration, consumer surplus and growth with e in 8 hands-on labs.
IntermediateCertificate$9.99
Math & TeachingTrigonometry & Geometry with Spreadsheets
Learn practical trigonometry and geometry by computing it: radians, SOH CAH TOA, Pythagoras and coordinates, the laws of sines and cosines, Heron's formula, volumes for material estimates, sine waves and vector bearings in 8 hands-on labs from surveying, roofs, ramps and navigation.
BeginnerCertificate$9.99
Math & TeachingModular Arithmetic & Cryptography Basics: From Caesar to Toy RSA
MOD and clock arithmetic, Caesar and affine ciphers, frequency analysis, Euclid and the extended Euclid inverse, square-and-multiply, a complete toy RSA key and ISBN/Luhn check digits: 8 graded labs (toy keys only, never for real security).
IntermediateCertificate$9.99
Math & TeachingLinear Programming by Hand: Graphical Method, Corner Points & Transportation
Formulate an LP, check plans for feasibility, draw constraint lines, solve corners with Cramer's rule, read shadow prices, build a northwest-corner shipping plan and enumerate an assignment: 8 graded labs plus Solver how-tos for a fictional brewery.
IntermediateCertificate$9.99
Math & TeachingLinear Algebra with Spreadsheets: Vectors, Matrices & Systems of Equations
Dot products and angles, matrix arithmetic, MMULT, transpose and identity, determinants, solving A x = b with MINVERSE, Markov chains and least squares via the normal equations: 8 graded labs on business and engineering data.
IntermediateCertificate$9.99
Math & TeachingCombinatorics: Counting Principles, Permutations, Combinations & Probability
Multiplication principle, FACT, PERMUT, COMBIN, multinomials, inclusion–exclusion, stars and bars, Pascal's triangle and the birthday problem: 8 graded labs on passwords, teams, menus and lottery odds.
IntermediateCertificate$9.99
Math & TeachingSequences & Series: Arithmetic, Geometric & Their Money Uses
nth terms, sums, growth and depreciation, the annuity formula behind FV, perpetuities, recursions, Σ with SUMPRODUCT and convergence tests: 8 graded labs with salaries, savings and a bouncing ball.
IntermediateCertificate$9.99
Math & TeachingLogic, Sets & Truth Tables with Spreadsheets
Propositions and truth tables with AND, OR, NOT and XOR, implication tricks, De Morgan proofs, sets as 0/1 columns, three-set Venn counts, a knights-and-knaves puzzle, ∀/∃ quantifiers with COUNTIF and a business-rule decision table, in 8 graded labs.
BeginnerCertificate$9.99
Math & TeachingGame Theory with Spreadsheets: Payoff Matrices, Nash Equilibria & Mixed Strategies
Best responses with MAX, iterated elimination of dominated strategies, pure and mixed Nash equilibria, the repeated prisoner's dilemma with discounting, zero-sum minimax, backward induction for entry deterrence and first- vs second-price auctions, all with two fictional coffee chains in a live spreadsheet that checks every cell. Educational only, not business or investment advice.
IntermediateCertificate$9.99
Math & TeachingNumerical Methods: Bisection, Newton-Raphson, Fixed-Point & Numerical Integration Accuracy
Error bounds, Newton with numerical derivatives, the secant method, convergence and divergence, IRR and bond yields as roots, trapezoid vs Simpson error rates and floating-point limits, all on business and engineering cases.
IntermediateCertificate$9.99
Math & TeachingUnit Conversions & Dimensional Analysis: Factor Chains, Rates & Mixed Units
Convert anything with confidence: factor-label chains, Excel's CONVERT function, squared and cubed area and volume factors, inverse rates like L/100 km ↔ mpg, temperature offsets, unit prices across currencies, significant figures and feet-inches or hours-minutes with INT and MOD, in 8 graded labs.
BeginnerCertificate$9.99
Math & TeachingCoordinate Geometry with Spreadsheets: Distance, Slopes, Lines, Circles & Polygons
Learn coordinate geometry by computing it on site plans, floor plans, maps and designs: distance and midpoint, slopes and ATAN2 directions, line equations and intersections, parallel and perpendicular checks, point-to-line distance, circles, shoelace areas with SUMPRODUCT and scale-rotate-translate transformations in 8 hands-on labs.
BeginnerCertificate$9.99
Math & TeachingVoting Methods & Social Choice: Plurality, Borda, Instant Runoff & Condorcet
Build preference profiles, count plurality and majority, simulate a two-round runoff, score a Borda count with SUMPRODUCT, run instant-runoff elimination rounds in a step table, find the Condorcet winner in a pairwise matrix, count approval ballots and watch the same ballots produce four different winners: 8 graded labs on one fictional town vote. Educational only, no endorsement of any electoral system.
IntermediateCertificate$9.99
Math & TeachingChaos & Iteration in Spreadsheets: The Logistic Map, Fixed Points & Fractals
Explore chaos the hands-on way: iterate functions down a column, test fixed points with |f′(x*)| < 1, watch the logistic map converge, cycle and turn chaotic (with a chart), build a bifurcation table and diagram, measure sensitive dependence and the Lyapunov exponent, model a fish stock with the Ricker map and harvesting, and draw a Mandelbrot set from escape-time counts with a recursive LAMBDA and a colour scale – 8 labs, every cell checked instantly.
IntermediateCertificate$9.99
Math & TeachingDifferential Equations in Spreadsheets: Euler, Heun & Runge–Kutta Methods
Slope fields, Euler's method against exact solutions, step size and the order of a method, Heun, RK4 by hand, predator–prey systems, the damped spring as a second-order ODE and stiffness with backward Euler: 8 hands-on labs that solve ODEs cell by cell.
IntermediateCertificate$9.99
Math & TeachingAuction Math: First-Price, Second-Price, Reserve Prices & the Winner's Curse
Who wins and who pays in English, Dutch, first-price and Vickrey auctions, expected revenue from order statistics, optimal bid shading, revenue equivalence, reserve prices, the winner's curse, search-ad GSP auctions and procurement bidding, all with a fictional auction house in a live spreadsheet that checks every cell. Educational only, not business, legal or investment advice.
IntermediateCertificate$9.99
Math & TeachingApportionment Math: Hamilton, Jefferson, Webster & Huntington–Hill
Compute standard divisors and quotas, apportion seats with Hamilton's largest remainders (RANK.EQ), Jefferson's and Webster's modified divisors and Huntington–Hill's geometric-mean rounding, compare who gains and loses in a chart, reproduce the Alabama and population paradoxes and fill D'Hondt and Sainte-Laguë quotient tables: 8 graded labs on one fictional country. Educational only, no political recommendation.
IntermediateCertificate$9.99
Math & TeachingProbability Paradoxes in Spreadsheets: Monty Hall, Birthdays, Simpson's & Base Rates
Monty Hall, the birthday paradox, Simpson's paradox, the base-rate fallacy, the gambler's fallacy, Bertrand's box, St. Petersburg and regression to the mean: 8 labs where a spreadsheet proves what intuition gets wrong.
IntermediateCertificate$9.99
Math & TeachingVectors & 3D Geometry in Spreadsheets: Dot & Cross Products, Planes & Projections
Build 3D vectors from points, measure lengths and unit vectors, add and scale displacements and chart a route, find angles with the dot product, project forces and compute work, take cross products for areas, build a plane from three points and measure distances to it, find the closest approach of two drones and finish with torque and cosine shading: 8 graded labs with SUMPRODUCT, SUMSQ, ACOS and plain component formulas.
IntermediateCertificate$9.99
Math & TeachingMarkov Chains in Spreadsheets: Transition Matrices, Steady States & Board Games
Turn weather records into a transition matrix, raise it to powers with MMULT, solve the steady state with MINVERSE, use the fundamental matrix for absorbing chains, compute gambler's-ruin odds, build a snakes-and-ladders matrix from dice rolls, project brand market shares with a chart and compare a simulation with the exact answer: 8 graded labs.
IntermediateCertificate$9.99
Guides with worked examples
Law of Cosines in Excel: Find a Side or an Angle
Law of cosines formulas for Excel: the third side from two sides and an angle, any angle from three sides with ACOS and DEGREES, and the RADIANS trap.
How to Find a Nash Equilibrium in a Payoff Matrix (Excel)
Find the Nash equilibrium of a payoff matrix step by step: best responses with MAX, the cells where both coincide, and a 3×3 pricing game in Excel.
Shoelace Formula in Excel: Polygon Area from Coordinates
Find the area of any polygon from its corner coordinates with the shoelace formula in Excel: row by row, in one SUMPRODUCT and with LET. Worked example.
Borda Count in Excel: SUMIF, SUMPRODUCT & Example
Borda count in Excel: count each option by rank with SUMIF, score with SUMPRODUCT, name the winner and compare it with plurality. Excel example.
D'Hondt Method Calculation: Step-by-Step Example
How the D'Hondt method allocates seats: divide votes by 1, 2, 3…, take the largest quotients and count seats with LARGE and COUNTIF. Excel example.
Newton-Raphson Method in Excel: Step-by-Step Iteration Table
Newton-Raphson method in Excel: the iteration formula, a table for x³ − 2x − 5, a loan rate solved like RATE, and why Newton can fail. Excel example.
Frequently asked questions
Is this suitable for school students?
Many courses work well from upper secondary level onwards. They are written for adult learners, so younger students may want a teacher or parent nearby.
Can teachers use the courses in class?
Teachers can take any course themselves. Team and classroom licences are not available yet.
How much does a course cost?
Each course is a single purchase of $9.99. That covers every lesson and lab, the final exam and the certificate, with no subscription and nothing that renews.
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