Geometry Session 1

Is your child READY for GEOMETRY? Geometry is one of the oldest branches of all mathematics. “GEO METRIA” actually means

Geometry Session 2

This is the second series of videos in Geometry. If you haven’t already, be sure to watch Session 1 here.

Geometry Session 3

This is the third series of videos in Geometry. If you haven’t already, be sure to watch Session 1 here

Algebra Session 1

Is your child READY for ALGEBRA? How do you know if she should be taking “prealgebra” or just moving straight

Algebra Session 2

This is the second series of videos in Algebra. If you haven’t already, be sure to watch Session 1 here.

Using Vectors and Trigonometry in Physics Problems

Now let’s put the coordinate systems together with vector addition into this more realistic problem we’re going to run into

Vector Notation & Trigonometry

There’s a different type of notation for x and y axes called “i-hat” and “j-hat”. This next video will show

Using Trigonometry with Physics

Now let’s do a physics problem so you can really see how to solve these kinds of things. This problem

Algebra Session 3

This is the third series of videos in Algebra. If you haven’t already, be sure to watch Session 1 here

Logic Numbers

This is a neat logic trick which allows you to flip over a stack of cards numbered 1-10. When you

Multiplication Tables

If you haven’t memorized your multiplication table yet, I am going to show you how to you need to memorize

Missing Piece Math Puzzle

Can you figure out how this works? Download you template here. The missing square is very simple, and it quickly

Kaleidocycles and Hexaflexagons

Kaleidocycles are a three-dimensional paper sculpture you can turn around and round! Flexagons were first created by Arthur Stone at Princeton

Math Books and Resources

Most resources that public school advisers suggest for gifted or bright kids are a ‘mile wide and an inch deep’

Pi

On March 14 at 1:59pm, folks from all over the world celebrate “Pi Day” with games, activities, and pie-eating contests.

Earthquake Mathematics

What does Earthquakes have to do with math? You actually need math in order to figure out where the earthquake

Not-so-Scary Calculus

Sadly, most kids get scared off too soon with math courses that don’t make a lot of sense. For the

Trigonometry in Action

Ever wonder what sines, cosines and tangents are used for in the real world? The truth is, most kids and

Automatic Envelope

This isn’t something you’d normally find in a math class, but I find it incredibly useful to know how to

Solving a Rubik’s Cube

Everyone old enough to remember the Rubik’s Cube craze of the 1980s in the USA also remembers how it was

Sprouts Math Game

This is a really neat game invented in 1967 by two mathematicians that was soon after published in Scientific American,

Finger Multiplication

Having trouble with your 6, 7, 8, and 9 multiplication tables? Sneak a peek at this nifty trick for multiplying

Cryptarithms

Cryptarithms are a puzzle where the digits are replaced by letters or symbols. When the numbers are replaced by letters

How Does a Two-Fingered Alien Count? (Binary Counting)

One day, my kid asked me how a calculator comes up with its answers. That’s a great question, I thought.

Guesstimations

When it’s too hard to count ’em up and too much time to calculate, it’s time to guesstimate the answer.

Division

If you hate long division like I do, then this lesson will be very useful in showing you how to

Quicker Multiplication

If you don’t have the patience to do multiplication on paper for every single math problem that comes your way,

Math from Left to Right

In school, you are trained to solve math problems on paper, at a desk. The problem with that is, for

Multiplication Tables

If you haven’t memorized your multiplication table yet, I am going to show you how to you need to memorize

Rocketry Math

Launching rockets requires a lot complicated math, but it all starts with Newton’s Laws of Motion. We’re going to get

Magic of 11’s

This math lesson is so easy that one night, I wound up showing it to everyone in the pizza restaurant.

Educational Games That Teach

If you’ve ever wanted to sneak a peek into my cabinet of educational games and books for kids, now is

Positive and Negative Integers

Numbers that are not fractions or decimals, are called integers. Numbers like: 2 and 144 and 299,792,458 (that’s the speed

Fold a Cube

There’s more than one way to fold a cube. So print out the attachment, grab some tape and sticky notes

Möbius Strip

Although the Möbius strip is named for German mathematician August Möbius, it was co-discovered independently by Johann Benedict Listing, a

Stepping Through a Sheet of Paper

Did you know that you can step through a sheet of paper using just a pair of scissors to help?

Sizes of Geometry

Remembering and visualizing most shapes is pretty easy, right? An octagon can be a challenge for some (it has eight

How to Multiply by 12

Do you think you’ll need to know how to multiply by 12 or 11 more? Think of it this way:

Divisibility

Can you look at a number and tell right away if it’s divisible by another number? Well, it’s pretty easy

What Day Were You Born On?

This is not only a neat trick but a very practical skill – you can figure out the day of

Paperclip Trick

For this puzzle, you’ll use three cups and eleven objects. The first challenge is to put an odd number of

New Year’s Puzzle

This is a really fun riddle! It’s a math logic puzzle involving the calendar that will really blow your mind.

Hex

Hex is a super fun game! It starts with a grid of hexagons (six-sided shapes) and two players. You can

Magic Squares

Magic squares have been traced through history as known to Chinese mathematicians, Arab mathematicians, India and Egypt cultures. The first

Bagels

This is one of my family’s favorites! It’s a guessing game, but you can use logic and strategy in order

Dictionary

If a friend had chose a three-letter word and asked you to guess it, how would you start? It seems

Tic Tac Toe

The first folks to play this game lived in the Roman Empire, but it was called Terni Lapilli and instead

Don’t Make a Triangle

This is a cool two-player geometry game with lots of strategy involved. You’ll need paper and two different colored markers

Rail Fence Cipher

Cryptography is the writing and decoding of secret messages, called ciphers. Now  for governments these secret ciphers are a matter

Twisted Path Cipher

In this video, I demonstrate a Twisted Path Cipher. It uses a matrix and a path in order to encode

Shift Cipher

Shift ciphers were used by Julius Caesar in Roman times. The key is a number which tells you how many

Date Shift Cipher

The Date Shift cipher is a much harder code to break than, for example, the more simple Shift cipher. This

Pig Pen Cipher

The Pig Pen cipher is of the most historically popular ciphers.  It was used by Freemasons a century ago and

Polybius Checkerboard Cipher

Polybius was an ancient Greek who first figured out a way to substitute different two-digit numbers for each letter. In

Cracking Ciphers

Cryptograms are solved by making good guesses and testing them to see if the results make sense. Through a process

\$1 Word Search

Have you ever heard of a dollar word search? It’s a special kind of puzzle where the letters in a

Isn’t that SUM-thing?

This is a neat trick that you can use to really puzzle your friends and family. If someone gives you

Playfair Cipher

This is a super hard cipher to break.  It’s encoded by taking pairs of letters and numbers from a matrix.

Telephone Cipher

Code machines – or cipher machines – can be used to encode and decode messages. One everyday example of a

Scytale

In this video I’ll show you how to use a actual cipher machine called a scytale. This was first used

Big Numbers

Numbers really can be huge – some are too big to even imagine!  Have you ever seen a million pieces

Exponents

Have you ever heard someone refer to a “million billion” of something? Is that more or less than a “billion

Math at a Rock Concert

Here’s an interesting math puzzle. If you’re at a concert that’s also being broadcast live on the radio, who will

Factorials

If I said “3!“, would you think the 3 is really excited, or that you have to shout the number?

Once in awhile, mathematicians come up against something that really seems impossible on the surface. These seemingly “impossibilities” not only

Probability

In math, probability is how likely it is that something will occur (or not). Probability is expressed from a range

Three Doors

Imagine that you are on a game show with a chance to win a car. There are three doors and

Secret Math Code

If only you could keep better track of big numbers, adding and multiplying your head wouldn’t be such a problem!

Freaky Fractals

Fractals are new on the mathematics scene, however they are in your life everyday. Cell phones use fractal antennas, doctors

What is Math?

What is math?  It can be compared to a very useful tool, or maybe a collection of tools. Sometimes textbooks

Pantograph: Early Copy Machines

A pantograph, first invented in the early 1600s, was used to make exact copies before there were any Xerox machines

Graphical Multiplication

The trick looks impressive, so be prepared for jaw-drops when you show this to kids and adults. But can you

Water Drop

You’ll be amazed at the physics of a simple water drop! This water drop was filmed in ultra-slow-motion at 2000

Want a peek under the ‘hood’ of my brain when I do a mental math calculation? This video is a

Easy Dice Game for Honing Math Skills

Did you know I carry a set of dice in my pocket just for this game? It’s as old as

Multiplying 2-Digit Numbers by 11

Here’s our first MATH lesson. It is so easy that one night, I wound up showing it to everyone in

Multiplying 3-Digit Numbers by 11

If you can multiply 11 by any 2-digit number, then you can easily do any three digit number. There’s just

Mental Mathemagic

We’re going to throw in a few math lessons here and there, so if math really isn’t your thing, free