### Folder Free eBooks by Bob Albrecht

#### document Anagrams Palindromes Semordnilaps 02

Here is our second eBook about anagrams, palindromes and semordnilaps – some of our favorite things. Our first anagrams, palindromes and semordnilaps eBook listed 3-letter permutations, anagrams, palindromes and semordnilaps from aaa to mzz.

In this eBook, we explore the whole shebang of 3-letter permutations, anagrams, palindromes and semordnilaps from aaa to zzz with much ado for your students.

This eBook is published under a Creative Commons license that allows you to give all or part of this eBook free to anyone, and use it in other ways. For example, you may snip a snippet from this eBook, paste it into your document, edit it, enhance it, make it the right stuff for your students - make it yours! Send your version to a publication of the state affiliate of the National Council of Teachers of Mathematics (NCTM), the National Council of Teachers of English (NCTE), or another publication.

Reality expands to fill the available fantasies.

#### pdf Play Together, Learn Together: Factor Monster

Factor Monster is our name for a classic game about natural numbers, composite numbers, prime numbers, factors and proper factors. The original game is called The Factor Game - you can find it on the Internet.

We have gone way beyond The Factor Game and built a system of games, including

Factor Monster Try for High Games

Factor Monster Go for Low Games

Factor Monster Tie Quest Games

Factor Monster Symmetric Games

Designing strategies for playing Factor Monster Games

This eBook also contains much ado about sequences, series and sums of consecutive natural numbers (triangular numbers).

Our friend Elucidatus Quadraticus demonstrates how to:

Derive the formula 1 + 2 + 3 + . . . + n = n(n + 1)/2.

Prove that the formula 1 + 2 + 3 + . . . + n = n(n + 1)/2 is true.

Determine if a natural number is or is not the sum of consecutive natural numbers (a triangular number).

Solve quadratic equations in various ways, including factoring and using the quadratic formula.

This eBook abounds with ideas for investigations by your students. Factor Monster is a never-ending source of enquiries yet to be done!

Reality expands to fill the available fantasies.

#### document Play Together, Learn Together: Factor Monster

Factor Monster is our name for a classic game about natural numbers, composite numbers, prime numbers, factors and proper factors. The original game is called The Factor Game - you can find it on the Internet.

We have gone way beyond The Factor Game and built a system of games, including:

Factor Monster Try for High Games

Factor Monster Go for Low Games

Factor Monster Tie Quest Games

Factor Monster Symmetric Games

Designing strategies for playing Factor Monster Games

This eBook also contains much ado about sequences, series and sums of consecutive natural numbers (triangular numbers).

Our friend Elucidatus Quadraticus demonstrates how to:

Derive the formula 1 + 2 + 3 + . . . + n = n(n + 1)/2.

Prove that the formula 1 + 2 + 3 + . . . + n = n(n + 1)/2 is true.

Determine if a natural number is or is not the sum of consecutive natural numbers (a triangular number).

Solve quadratic equations in various ways, including factoring and using the quadratic formula.

This eBook abounds with ideas for investigations by your students. Factor Monster is a never-ending source of enquiries yet to be done!

Reality expands to fill the available fantasies.

#### pdf The Incredible Doubling Lily Pad

**This eBook is a fantasy** about an old math problem involving a lily pad floating in a pond. The lily pad doubles in size each day or second or other time period and eventually covers the pond. Look for it on the Internet by using search keys such as 'lily pad pond double size'.

**Fantasy #1**. The lily pad doubles in size every day. In 30 days, the length of the lily pad's diameter grows to 27 times Earth's equatorial circumference, 2.79 times the distance of the Moon from Earth.

**Fantasy #2**. The lily pad doubles in size every second. In 60 seconds, the length of the lily pad's diameter grows to 7.7 million AU (astronomical units), 122 ly (light years), farther than stars Alpha Centauri, Sirius, Castor, Pollux, Vega, Altair, and the stars of the Big Dipper. Astronomically awesome! There are more fantasies in this eBook.

Reality expands to fill the available fantasies.

#### document The Incredible Doubling Lily Pad

**This eBook is a fantasy** about an old math problem involving a lily pad floating in a pond. The lily pad doubles in size each day or second or other time period and eventually covers the pond. Look for it on the Internet by using search keys such as 'lily pad pond double size'.

**Fantasy #1**. The lily pad doubles in size every day. In 30 days, the length of the lily pad's diameter grows to 27 times Earth's equatorial circumference, 2.79 times the distance of the Moon from Earth.

**Fantasy #2**. The lily pad doubles in size every second. In 60 seconds, the length of the lily pad's diameter grows to 7.7 million AU (astronomical units), 122 ly (light years), farther than stars Alpha Centauri, Sirius, Castor, Pollux, Vega, Altair, and the stars of the Big Dipper. Astronomically awesome! There are more fantasies in this eBook.

Reality expands to fill the available fantasies.