Unit 1: Numerical Reasoning
While using formulas and remembering rules is an important piece of math...and possibly what some feel math is all about, understanding why these rules work or how they work is equally essential. In this unit the student will learn to, recognize irrational numbers, classify numbers based on their properties, order real numbers, estimate the square root of a number (without a calculator), and convert between standard and scientific notation.
Squares and Square Roots
Estimating Square Roots - Khan Academy Video