• ## Parallel and Perpendicular Lines Worksheet

A practice sheet for perpendicular and parallel lines! Practice the symbols and their names, identify […]

• ## Ohm’s Law – The principle of Electronic Circuits

There are many properties of electricity but some of the most basic are explained by […]

• ## Permutation and Combination and What is a Factorial?

If you have 7 different options on the menu and you can order 2 of […]

• ## Easy 2-digit subtraction tricks

Subtraction Tricks!    Quick subtraction of 2 digit numbers    Subtract both the ten’s and […]

• ## What are Prime Numbers? Is 2 a prime number?

Prime numbers are any numbers that cannot be evenly divided by any integer other than […]

• ## What is a gigabyte? Computer hardware numbers

1 point 21 Gigabytes!?! What the heck is a gigabyte? Read on for a quick […]

• ## 12 Ways to Improve Mathematics Skill

Improve your Mathematics Skill The following are some thoughts on how to improve your mathematics […]

• ## Teacher Appreciation -Thank you teachers!

I am so very grateful to the many teachers I’ve had. I am grateful for […]

• ## What is a knot?

Have you ever heard in movies when a sailor or a pilot talks about their […]

• ## Multiplication Practice Worksheets

A collection of math practice sheets – these are the Multiplication Sheets! Basic multiplication facts practice, free printable downloads – with practice for various levels.

The better you can do your multiplication, the funner math can be. Learn the basic multiplication facts by practice, practice, practice.

### Probability – the OR case

We are continuing our discussion of Probability. If you missed the introduction and the “and” case of probability, here you go. Probability – the AND […]

## Permutation and Combination and What is a Factorial?

### Ohm’s Law – The principle of Electronic Circuits

There are many properties of electricity but some of the most basic are explained by Ohm’s Law. Ohm’s Law describes the relationship between current, resistance, […]

## What is a knot?

### What number am I? – Prime numbers and perfect squares

Math Teaser I am a perfect square. My square root is a prime number, less than 100, and the digits of the square root add […]

### Reverse Calculation

Math Teaser! A number is divided by five. The result is divided by three, for a ﬁnal result of two. What was the original number? […]

### Rectangle

Math Teaser! If a rectangle has an area of 192 square meters, and the length is three times longer than its width, what are the […]

### Steps in a mile

If I were to start a new exercise program where I double my previous day’s steps each new day, on which day of the program […]

### 25 Cent Coin Combinations

Math Teaser How any combinations of US coins are there that add up to 25 cents? [doptoggle title=”Click Here to see the Solution!!!” icon=5 activeicon=6] […]

### A Sequence

Math Teaser! If the first five terms of a sequence are 0, 2, 8, 18, 32 what would be the value of the tenth term? […]