Bob and GeorgeTracy, California, US,

July 27, 2007

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We love numbers. In this collection, we will put resources about numbers.<p/> Natural number, successor of a natural number, prime number, composite number, prime factorization, factors, proper factors, sum of factors, sum of proper factors, deficient number, perfect number, abundant number, square number, cubic number, triangular number, factorial number, Fibonacci number, palprime, emirp, atomic numbers of atoms (number of protons), et cetera, et cetera.<p/> As Gaia turns we will add alakazams about whole numbers, integers, rational numbers, real numbers, and other numbers.

- Mathematics > General

- Grade 1
- Grade 2
- Grade 3
- Grade 4
- Grade 5
- K
- Grade 6
- Grade 7
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- Grade 12

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We love numbers. In this collection, we will put resources about numbers.

Natural number, successor of a natural number, prime number, composite number, prime factorization, factors, proper factors, sum of factors, sum of proper factors, deficient number, perfect number, abundant number, square number, cubic number, triangular number, factorial number, Fibonacci number, palprime, emirp, atomic numbers of atoms (number of protons), et cetera, et cetera.

As Gaia turns we will add alakazams about whole numbers, integers, rational numbers, real numbers, and other numbers.

We collect and create tools and toys for learning and teaching. Been at it for a long time. Now we're stuffing old stuff and new stuff into Microsoft Word and Portable Document Format (PDF) files such as this one. You may make copies of this file to distribute free of charge. You may print this file and distribute paper copies at no charge. We hope you find this information interesting, useful, helpful, et cetera, et cetera. We’ll appreshiate it grately if you wil infrom us of any mistrakes.<p/>
THIS UNIT IS ABOUT: numbers, natural numbers, counting numbers, whole numbers, integers, odd numbers, even numbers, prime numbers, and composite numbers.<p/>
And "The First Computer" by The Dragon from People's Computer Company Nov/Dec 1976.</

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This reference unit consists of tables of information about the natural numbers 1 to 99. It is a companion unit to Natural Numbers 1 to 99. <p/>
Table 1 is a check list of characteristics: composite, prime, palprime, emirp, deficient, perfect, abundant, square, cubic, power of 2, factorial, and Fibonacci.<p/>
Table 2 lists prime factorization, factors, sum of factors, and sum of proper factors.<p/>
Down yonder below the numbers, there is a glossary.<p/>

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This is a unit for teachers about the set of natural numbers 1 to 99. More than 100 questions, activities, and conjectures about natural numbers 1 to 99. Odd numbers, even numbers, prime numbers, composite numbers, factors, sums of factors, and so on, Plus uphill numbers, flat numbers, downhill numbers, palprimes, and emirps. <p/>
This is the third unit in a set of three units. The other two units are the reference units:<p/>
Natural Numbers 1 to 99<p/>
Natural Numbers 1 to 99 -Tables

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This reference unit consists of tables of information about the natural numbers 1 to 99. It is a companion unit to Natural Numbers 100 to 199. <p/>
Table 1 is a check list of characteristics: composite, prime, palprime, emirp, deficient, perfect, abundant, square, cubic, power of 2, factorial, and Fibonacci.<p/>
Table 2 lists prime factorization, factors, sum of factors, and sum of proper factors.<p/>
Down yonder below the numbers, there is a glossary.

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CONTENTS: Two number factories and half-baked ideas for a third number factory.<p/>
The Digit Factory: Use the numbers 1, 2, 3, 4, and 5, the operations addition, subtraction, multiplication, and division, and parentheses to manufacture expressions whose values are decimal digits.<p/>
The Million Factory: Use decimal digits 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9, the operations addition, subtraction, multiplication, division, and exponentiation, and parentheses to manufacture expressions whose value is 1,000,000 (one million)

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A palprime is a palindromic prime number, a prime number that when reversed (read right to left instead of left to right) is the same prime number. 11, 101, 373, and 929 are palprimes.<p/>
An emirp is a prime number that is the reverse of a different prime number. The word 'emirp' is the reverse of the word 'prime'. Emirps occur in pairs: 107 and 701, 347 and 743, 769 and 967.

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Investigate a list of 484 Oregon Zip Codes. Find odd numbers, even numbers, prime numbers, composite numbers, deficient numbers, perfect numbers, abundant numbers, square numbers, cubic numbers, triangular numbers, powers of 2, powers of 3, factorial numbers, Fibonacci numbers, palindromes, downhill numbers, peak numbers, and wavy numbers.

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When my grandson Stevie was in third grade, my son Karl sent a copy of a letter from Stevie's teacher. The letter was accompanied by a life-size silhouette of Stevie's profile. <p/>
Dear Parents,<p/>
Let me introduce myself. I am Stevie A's shadow. My name is Flat Justin. I would really enjoy it if you would send me through the mail to one of your family members that lives out of town. Please ask them to take me to places of interest around their town, take pictures of me, and write about where I've gone and all of my adventures.<p/>
I thought that this was a terrific idea, so I invited some kids to go adventuring with Flat Justin. We walked along Santa Rosa creek and saw lots of birds. George Firedrake, who is a dragon, gave Justin a ride on his kite.<p/>
After the walk, Justin and the other kids all learned how to count in Japanese. Japanese words for numbers are like base 10 block numbers, so it is easy to learn how to say and write numbers. <p/>
We made lots of numbers, and played games with dice and base 10 blocks and dixie cups and lima beans and – but that's another story for another time.<p/>
Sayonara<p/></

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