Master Math & Science
From Grade 4 to AP. SAT to ACT.
24 courses ยท 700+ topics ยท Completely free
Choose Your Course
Select a course to explore comprehensive study materials
Middle School Math (Grades 4-8)
Grade 4 Math
Learn multiplication, division, fractions, decimals, and basic geometry for 4th grade.
Grade 5 Math
Master place value, operations with decimals, fractions, volume, and coordinate planes.
Grade 6 Math
Build a strong foundation in whole numbers, fractions, decimals, ratios, geometry basics, and introduction to negative numbers.
Grade 7 Math
Master rational numbers, proportions, expressions, equations, geometry, and probability for 7th grade.
Grade 8 Math
Explore exponents, linear equations, functions, geometry transformations, and the Pythagorean theorem.
High School Math (Grades 9-12)
Algebra 1
Master linear equations, inequalities, functions, polynomials, and quadratic equations.
Geometry
Explore points, lines, angles, triangles, circles, area, volume, and geometric proofs.
Algebra 2
Study advanced functions, polynomials, exponentials, logarithms, rational expressions, and sequences.
AP Precalculus
Build a strong foundation in functions, trigonometry, vectors, matrices, and complex numbers to prepare for calculus.
Pre-Algebra
Master the fundamentals: integers, fractions, decimals, basic equations, and essential problem-solving skills for algebra success.
AP Calculus AB
Master limits, derivatives, integrals, and their applications for the AP Calculus AB exam.
AP Calculus BC
Extend your calculus knowledge with advanced integration, sequences, series, parametric/polar calculus, and vector-valued functions.
AP Statistics
Explore data, probability, and statistical inference
AP Sciences
AP Physics 1
Explore mechanics, waves, sound, and basic circuits in this algebra-based physics course.
AP Physics 2
Study fluids, thermodynamics, electricity, magnetism, optics, and modern physics using algebra-based approaches.
AP Physics C: Mechanics
Master calculus-based mechanics including kinematics, energy, momentum, rotation, and oscillations.
AP Physics C: Electricity & Magnetism
Dive deep into electrostatics, conductors, capacitors, electric circuits, magnetic fields, and electromagnetic induction with calculus.
AP Chemistry
Explore atomic structure, chemical bonding, states of matter, reactions, kinetics, thermodynamics, and equilibrium.
AP Biology
Study the chemistry of life, cells, genetics, evolution, ecology, and the diversity of organisms.
AP Psychology
Explore the science of behavior and mental processes including cognition, development, personality, and disorders.
Organic Chemistry
Master organic molecular structure, functional groups, reaction mechanisms, synthesis strategies, and spectroscopy.
Test Prep
SAT Prep
Master the SAT with comprehensive practice for Math and Evidence-Based Reading & Writing sections.
ACT Prep
Ace the ACT with targeted strategies for Math, English, Reading, and Science sections.
MCAT Prep
Master the MCAT with comprehensive review of Chem/Phys, CARS, Bio/Biochem, and Psych/Soc sections.
Everything you need to succeed
Whether you're just starting or preparing for the AP exam, we've got you covered.
- ๐Comprehensive Notes
Clear, detailed text explanations for every topic. Concise and easy to understand.
- ๐ฏPractice Problems
Hundreds of example problems with detailed step-by-step solutions to build your skills.
- ๐ดFlashcards
Quick review flashcards for every topic. Perfect for exam prep.