Formula sheets and short study notes that sit next to the calculators. Chemistry, intro physics, and differential-equations sheets collect the relations you type into homework; the Physics GRE equation sheet and electric field guide go deeper on those topics.
- Physics GRE Equation SheetPhysics GRE equation sheet and formula sheet—mechanics, E&M, quantum, thermo, optics, relativity, high-yield constants, topic weights, and a two-week study plan.
- Electric Field Guide & VisualizerLearn electric field concepts, key formulas, and point-charge visualizations for introductory and GRE-level physics.
- Chemistry Formula SheetGeneral chemistry formula sheet and equation sheet—moles, dilution, equilibrium, Ksp, pH, gas laws, kinetics, and thermochemistry, with links to free calculators.
- Physics Formula SheetIntroductory physics formula sheet and equation sheet—kinematics, Newton, energy, momentum, rotation, waves, and basic E&M—with links to the graphing and field tools.
- Differential Equations Formula SheetDifferential equations formula sheet: first- and second-order ODEs, Jacobian linearization, and how to classify node, saddle, spiral, and center equilibria.
Calculators are grouped under chemistry, math, and computing.