Algebra Classes

Learn to predict precipitates by listing dissolved ions, applying solubility rules and exceptions, balancing formulas, and reducing complete ionic equations to the net change.

Use the Drake equation to separate what astronomy measures from what biology and technology still leave uncertain.

Learn to spot confounding, test a third factor with stratified comparisons, and match causal language to the evidence.

Read a regression line by separating observed values, predictions, slope, intercept, residuals, and the limits of extrapolation.

Choose constant-acceleration equations, keep signs and units consistent, and check whether a motion answer fits the story.

Convert units cleanly and use dimensions to catch impossible physics equations before arithmetic hides the mistake.

Turn balanced reversible equations into equilibrium expressions, choose concentrations or partial pressures, omit pure phases, and use Q to predict the direction of change.

Use reduction-potential tables to identify cathode and anode, calculate standard cell potential, and know when the Nernst equation is needed.

Learn to read calibration curves, prepare and inspect standards, solve a linear calibration equation, check the working range, and report an unknown with its limits.

Learn to identify the four gas variables, match units to the gas constant, solve direct and two-state problems, and recognize when the ideal model may fail.

Turn a research question into a defensible statistical test by matching variables, group structure, dependence, study design, and uncertainty.

Read the Great Sandy Desert from above through its linear dunes, ancient river lakes, salt pans, fire scars, and the Canning Stock Route.

Use the Henderson-Hasselbalch equation to connect pKa, conjugate-pair ratios, buffer pH, capacity, and the limits of the approximation.

Use signed distances, magnification, and ray diagrams to solve and check thin-lens problems.

Read slopes and plateaus on a heating curve, then connect phase changes with pressure, latent heat, and energy equations.

Learn to balance acid-base equations by separating formulas, coefficients, ions, charge, and mole ratios.

The winning drawing had no buildable roof on it, and the state started pouring concrete anyway. What followed was six years of failed geometries, one sphere, 30,000 hand-written equations, 1,056,006 tiles — and an architect who walked out i

Use units as algebra to convert chemistry quantities and catch mismatched dimensions.

Translate contexts, choose substitution or elimination, interpret intersections, and verify exact solutions under test conditions.

Strip spectator ions from a balanced aqueous reaction while preserving states, atoms, charge, and the chemical change.

Use balanced equations, mole ratios, limiting reactants, molarity, and yield to solve chemistry problems.

Use the half-reaction method to balance atoms, charge, electrons, and solution conditions in oxidation–reduction equations.

See how threat attention, uncertain updates, variable rewards, social monitoring, and missing endpoints keep a feed alive.

Trace pollen from silent IgE sensitization through early mast-cell alarms, late nasal inflammation, variable exposure, and mechanism-specific treatment.

Weather for people who grow things, taught around one shift in mindset: a farm doesn't respond to 'weather' in the abstract — it responds to a few measurable variables. Learn to count heat with growin

The power grid must match supply to demand every single instant — that is its unforgiving rule. Cheap solar and wind broke the old way of keeping that balance by being variable, and energy storage plu

Sous vide isn't a gadget — it's the decision to control the one variable every other method leaves to luck: final temperature. Learn the protein science of why it works, how time and temperature becom

Cut through the noise around clean energy. This course treats decarbonisation as what it actually is — a systems problem of matching variable supply to constant demand, across time and materials — not

One plant, six kinds of tea, five thousand years of history. Understand how a single variable — oxidation — turns the same leaf into green, oolong, or black; learn terroir, the truth about caffeine, h

The wire outside your window carries thousands of volts; your socket delivers 120. One equation — P = I²R — explains that gap, and everything between: the staircase of voltage, the radial feeder that

Extend calculus into three dimensions and beyond. You'll work with partial derivatives, multiple integrals, and vector fields used across physics and engineering.

Learn the equations that describe change over time. You'll solve the main types of differential equations and use them to model motion, growth, and oscillation.

Understand the math that keeps secrets safe. You'll grasp keys, public-key cryptography, and how encryption protects messages, payments, and the web without needing the equations.

Build real intuition for the quantum world using experiments instead of equations. You'll understand superposition, entanglement, and measurement well enough to see through the hype.

Begin chemistry the way a college first term does: atoms, the periodic table, bonds, moles, balanced equations, and predicting what reacts.

Rebuild the algebra skills most adults have let slip. You'll solve equations, work with exponents, and read and manipulate the formulas that show up everywhere.

Bridge algebra and calculus by mastering functions. You'll graph and transform functions, handle logarithms and exponentials, and be ready for a first calculus

Write your first real programs in Python. You'll understand variables, loops, and functions and be able to build small scripts that solve everyday problems.

Master the math of vectors, matrices, and linear systems that powers modern data and graphics. You'll solve systems, multiply matrices, and understand eigenvalues.

Every word problem can be drawn, tabled, or written as an equation. Learn three powerful ways to picture a problem — and pick the one that cracks it fastest.

Turn everyday stories into math you can solve. Draw the situation as a bar model, write it as an equation with a symbol for the unknown, then solve and explain what the answer really means.

Turn tricky word problems into clear pictures and neat equations! Draw bar models to see the parts and whole, write the matching number sentence, and solve missing-number problems with confidence.

Learn to measure forces with a newton-meter and design a fair test, from variables to results tables and conclusions.

Master the equation at the heart of electronics, V = I × R, and learn to rearrange it to find voltage, current, or resistance in any simple circuit.

Plot two variables against each other, name the correlation as positive, negative, or none, and draw a line of best fit to make honest predictions.

See how linear equations draw straight lines — and what slope and y-intercept really mean — then meet the U-shaped curves that quadratics make.

Master the language and the moves of equation solving: expand parentheses, collect like terms, factor out common factors, and isolate x step by step.

Learn algebra's shorthand — why ab means a × b and a² means a × a — and translate real situations into expressions, tables, and graphs.

Turn 'I think of a number...' puzzles into equations like 2n + 5 = 17, and hunt down all the pairs of numbers that make statements like a + b = 12 true.

Two equations, one answer that satisfies both. See why the point where two lines cross solves both equations at once, and read solutions from a graph.

Make any variable the subject. Use inverse operations to rearrange formulas until the letter you actually want stands alone.

Turn statements like 'at least 12' into x ≥ 12, solve simple inequalities with the same moves you use for equations, and draw the answers on a number line.

The equals sign says 'both sides are the same.' Learn to test equations like 4 + 1 = 5 + 2 and decide for yourself whether they're true or false.

Some problems take two moves to solve. Learn to read a story problem, plan both steps, and write an equation with a symbol standing in for the mystery number.

Solve real-world problems that take two steps and mix operations, and write equations with a letter standing for the unknown — your first taste of algebra.

Find the mystery number in equations like 8 + ? = 11, using what you know about how addition and subtraction fit together.

How a modern forecast is built: from barometers and folklore to a global sensor network, supercomputers solving the atmosphere as equations, and the chaos that limits how far ahead we can ever see.

How rockets actually work — from Newton's third law and the tyranny of the rocket equation to propellants, staging, bell nozzles, orbital mechanics, and the century of engineering from Goddard to reusable boosters.

Solve equations, graph lines, and crack quadratics: the core of algebra.

Master the bridge from arithmetic to algebra: integers, order, and variables.