## Geometry Session 1

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

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Geometry Session 1

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Geometry Session 2

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Geometry Session 3

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Algebra Session 1

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Algebra Session 2

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Using Vectors and Trigonometry in Physics Problems

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Vector Notation & Trigonometry

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Using Trigonometry with Physics

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Algebra Session 3

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Logic Numbers

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Multiplication Tables

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Missing Piece Math Puzzle

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Kaleidocycles and Hexaflexagons

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Math Books and Resources

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Earthquake Mathematics

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Not-so-Scary Calculus

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Trigonometry in Action

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Automatic Envelope

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Solving a Rubik’s Cube

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Sprouts Math Game

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Finger Multiplication

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Cryptarithms

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

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Guesstimations

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Quicker Multiplication

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Math from Left to Right

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Multiplication Tables

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Rocketry Math

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Magic of 11’s

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Educational Games That Teach

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Positive and Negative Integers

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Fold a Cube

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Möbius Strip

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Stepping Through a Sheet of Paper

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Sizes of Geometry

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How to Multiply by 12

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Divisibility

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What Day Were You Born On?

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Paperclip Trick

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New Year’s Puzzle

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Magic Squares

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Dictionary

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Tic Tac Toe

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Don’t Make a Triangle

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Rail Fence Cipher

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Twisted Path Cipher

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Shift Cipher

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Date Shift Cipher

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Pig Pen Cipher

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Polybius Checkerboard Cipher

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Cracking Ciphers

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$1 Word Search

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Isn’t that SUM-thing?

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Playfair Cipher

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Telephone Cipher

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Big Numbers

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Math at a Rock Concert

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Factorials

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Checkerboard Paradox

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Probability

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Three Doors

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Secret Math Code

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Freaky Fractals

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What is Math?

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Pantograph: Early Copy Machines

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Graphical Multiplication

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Water Drop

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How to Add and Multiply Quickly in your Head

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Easy Dice Game for Honing Math Skills

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Multiplying 2-Digit Numbers by 11

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Multiplying 3-Digit Numbers by 11

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Mental Mathemagic

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Squaring Two-Digit Numbers

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How to Square Bigger Numbers Faster in your Head

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Read moreThis neat little trick shortcuts the multiplication process by breaking it into easy chunks that your brain can handle. The

Read moreSquaring three-digit numbers is one of the most impressive mental math calculations, and it doesn’t take a whole lot of

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