Three full courses, built to be used — not just read. Open a subject, drag the visuals to build intuition, lock it in with a quick check, then drill practice and short-answer questions with worked solutions.
Transformations, key features, exponentials, trigonometry, and discrete sequences.
Kinematics, motion graphs, forces, energy, waves, sound, and electric circuits.
Atomic structure, bonding, stoichiometry, solutions, gases, and reaction rates.
Functions, Physics, and Chemistry now include distilled printable notebook PDFs — plus teacher-style tips that show how to actually approach a problem, not just the final answer.
Drag the sliders and predict what the graph or model will do before it moves.
Answer a couple of questions per lesson and read the worked explanation.
Work the after-class set; track your score and review every answer.
Tackle the short-answer questions, then reveal the answer key to compare.