GCF of 2 Numbers, Trick Finds it Fast

Ever need to find the GCF of two numbers? Here’s a trick for finding the GCF of any two numbers — very quickly. This is an original trick, so I doubt you’ll find it anywhere else online. But most important, it’s easy to use, and it works no matter how large the numbers might be. Also nice … learning this […]

How to Decrease Algebraic Mistakes – Part 6

Factoring by grouping is one of the trickier skills in Algebra 1. But by using a special form of notation, the double-slash, students can do this skill with greater ease. This post explains how this notation can help students tackle this challenging form of factoring.

How to factor out the GCF with stories

Real-life stories, related to algebraic procedures, can dramatically help students understanding both what the process is about, and how to do the process. Here I show how two real-life stories can help students master the steps required for factoring the GCF out of a polynomial.

Divisibility by 4 — Principles & Trick

It is not hard to find out if 4 goes into a number evenly. Here is a trick that shows you how to find out very quickly.