Combining like terms confuses many students. But by using a special notation, the double-slash, students get a visual aid that helps them combine like terms with greater care. This post shows how to use the double-slash to combine like terms. And it offers practice problems and their solutions, too.

# Archive | Solving Equations

# How to decrease Algebraic mistakes – Part 4

The double-slash notation comes to the rescue in algebra once again. In this post we learn how this clever notation device helps students combine positive and negative numbers, the trickiest pre-algebra concept of all. Read to find out how you can use this notation to make this concept easier for your students or children.

# How to Decrease Mistakes in Algebra – Part 3

The double-slash helps students for a variety of reasons. This post explains some of the reasons why it works.

# How to Decrease Mistakes in Algebra – Part 2

Algebra is an area of math that leads many students to make mistakes. Using a simple “Double-Slash” mark helps students wall off parts of algebra expressions from other parts, so that they avoid making mistakes. This post and the next several post will help educators learn how to use the “Double-Slash.”

# How to Decrease Algebraic Mistakes – Part 1

Algebraic expressions are covered with mental “land mines.” Step the wrong way, and an expression will blow up on the page, making it impossible for students to move in the right direction. Fortunately there’s a simple thing students can do to succeed at simplifying algebraic expressions, and that simple something is using what I call […]

# Challenge Problem – the ANSWER

Answer to challenge problems about probability of catching fish.

# Conquering Proportions, Part 1

This trick makes it easy to solve algebraic proportions. Try it and see!

# Conquering Mixture Problems โ Practice

Solve these mixture problems to increase your skill at solving tricky algebra word problems.

# “Simple” equations? Not always so simple.

Here’s a tip that helps teachers help students solve simple equations, but equations that have a tricky twist that can really trip kids up.

# Making Sense of Negative Signs

Solving equations can be extremely difficult for many students. This blog explores a certain kind of equation that gives students the “heeby-jeebies,” and it tells you how to help them find a way out of their confusion.