For middle school and high school students, algebra can be one of the most difficult maths topics. It covers basic operations such as addition, subtraction, multiplication and division. [...]
number theory, variables, operators, exponentiation, square roots, ...
lines, planes, distances, intersections, ...
functions, derivatives, integrals, extrema, roots, limits, ...
shapes, triangles, quadrilaterals, circles, ...
vectors, linear combinations, independence, dot product, cross product, ...
sine, cosine, tangent, ...