Why do we need to study pre-algebra?
Pre-algebra helps students prepare knowledge to study algebra. Pre-algebra guides students through among things, for example: one-step equations, inequalities, equations, graphs, functions, probabilities and so on.
What does calculus mean?
"Calculus" comes from Latin which means "small pebble used for counting." "Calculus" is the mathematical study of change, including two major branches: differential calculus and integral calculus.
What does "Algebra" mean?
"Algebra" comes from Arabic "al-jabr" which means "reunion of broken parts." Algebra subject includes exponents, radicals, polynomials, factoring/division of polynomials, solving equations/inequalities/quadratics, and so on.