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Fractions Decimals Percents. Fractions, Decimals, Percents / Ratios and Proportions Suitability comments on Main Reader Page ► = Our family's favorites Y = for the youngest kidsTo print, click on the printer icon at the bottom of the list Fractions, Decimals and Percents Alice in Pastaland: A Math Adventure – Cute picture book, take off on the famous story but with math based storyline Apple Fractions Jerry Pallotta, better than average book on fractions Calculator Mania! Planet Dexter, fun! Delightful Decimals and Perfect Percents: Games and Activities That Make Math Easy and Fun by Lynette Long Eating Fractions by Bruce McMillan, nice illustrations, an introduction for very young children. Fractions Are Parts of Things (Young Math Books) by J. Fraction Action by Loreen Leedy, in the style of Mission Addition, we like this author a lot Fraction Fun by David Adler Fraction Jugglers: Game and Work Book and Math Game Cards by Ruth Alexander Bell – Game cards and book, not a reader, an excellent resource for fraction games Percentages.

Compare Estimate Average. Comparing and Estimating, Averages, Relative Sizes Suitability comments on Main Reader Page ► = Our family's favorites Y = for the youngest kidsTo print, click on the printer icon at the bottom of the list A Million Dots by Andrew Clements A Million Fish...More or Less by Patricia McKissack Actual Size (Blue Ribbon Nonfiction Book Award) by Steve Jenkins; also Hottest, Coldest, Highest, Deepest and Biggest, Strongest, Fastest Averages (A Young Math Book) by Jane Jonas Srivastava Bigger and Smaller (Young Math) by Robert Froman Counting on Frank by Rod Clement, unusual illustrations, relative sizes/amounts Estimation (A Young Math Book) Linn, Charles/Madden, Don.

Great Estimations and Greater Estimations by Bruce Goldstone Hello Math Readers / Marilyn Burns Activities Included: Slower Than a Snail (Level 2) (Level 2) by A. . ► by Sheila Keenan / The Fattest, Tallest, Biggest Snowman Ever (Level 3) by Bettina Ling How Big Is A Million? By Anna Milborne by Helen Nolan How Tall, How Short, How Faraway by David Adler. Reader Lists. Place Value Number Bases. Place Value, Groups of Tens / Hundreds, Number Bases Suitability comments on Main Reader Page ► = Our family's favorites Y = for the youngest kidsTo print, click on the printer icon at the bottom of the list 12 Ways to Get to 11 by Eve Merriam Alien Math by Marya Washington Tyler - number bases Base Five, (Young Math Books) by David Adler. Binary Numbers (Young Math Books) by Clyde Watson Counting Systems: The Familiar and the Unusual Luce, Marnie/Stenson, Charles - Lots of practice with number bases in this one.

Hello Math Readers: 512 Ants On Sullivan Street (Level 4) by Losi, L. – by Carol A. Skip-counting to 100 by 2s, 5s, 10s and 20's / Monster Math Picnic (level 1) Grace Maccarone The History of Counting by Denise Schmandt-Besserat How to Count Like a Martian (upper elem level) by Glory St. The King's Chessboard ► Birch, David/Grebu. Is a similar tale with beautiful artwork. MathStart Readers by Stuart Murphy: Earth Day--Hooray! Qualities of 100 Millions of Cats by Wanda Gag, this book is a classic. Place Value Number Bases. Place Value, Groups of Tens / Hundreds, Number Bases Suitability comments on Main Reader Page ► = Our family's favorites Y = for the youngest kidsTo print, click on the printer icon at the bottom of the list 12 Ways to Get to 11 by Eve Merriam Alien Math by Marya Washington Tyler - number bases Base Five, (Young Math Books) by David Adler. Binary Numbers (Young Math Books) by Clyde Watson Counting Systems: The Familiar and the Unusual Luce, Marnie/Stenson, Charles - Lots of practice with number bases in this one.

Hello Math Readers: 512 Ants On Sullivan Street (Level 4) by Losi, L. – by Carol A. Skip-counting to 100 by 2s, 5s, 10s and 20's / Monster Math Picnic (level 1) Grace Maccarone The History of Counting by Denise Schmandt-Besserat How to Count Like a Martian (upper elem level) by Glory St. The King's Chessboard ► Birch, David/Grebu. Is a similar tale with beautiful artwork. MathStart Readers by Stuart Murphy: Earth Day--Hooray! Qualities of 100 Millions of Cats by Wanda Gag, this book is a classic. Articles. Launch - Math Blaster. Complete a Numerical Sentence - Subtraction. MATH Educational Magazine Subscription | Scholastic Classroom Magazines | Scholastic.com. Math Spring 2011 Promo. 10 Easy Arithmetic Tricks. Technology Math can be terrifying for many people. This list will hopefully improve your general knowledge of mathematical tricks and your speed when you need to do math in your head. 1.

The 11 Times Trick We all know the trick when multiplying by ten – add 0 to the end of the number, but did you know there is an equally easy trick for multiplying a two digit number by 11? Take the original number and imagine a space between the two digits (in this example we will use 52: Now add the two numbers together and put them in the middle: That is it – you have the answer: 572.

If the numbers in the middle add up to a 2 digit number, just insert the second number and add 1 to the first: 1089 – It works every time. 2. If you need to square a 2 digit number ending in 5, you can do so very easily with this trick. 252 = (2x(2+1)) & 25 2 x 3 = 6 3. Most people memorize the 5 times tables very easily, but when you get in to larger numbers it gets more complex – or does it? 2682 x 5 = (2682 / 2) & 5 or 0 4. 5. PatrickJMT. NumberSpiral.com - Home. Why-couldnt-i-have-been-shown-this-in-maths-class.gif from themetapicture.com. Relplot: equation plotter. Relplot constructs high-resolution PostScript or PDF plots of the solutions to equations on two variables. Unlike most other plotters, it can handle general equations and inequations, not just functions, and it can plot multiple equations at once. What can you plot? Multiple equations/formulas separated by commas: ,Logical operators for combining formulas: && & ||Relational operators: = < <= > >=Binary arithmetic ops: + * - / ^ modUnary arithmetic ops: |x| sqrt floor exp ln sin cos tan asin acos atan atan2 sinh cosh tanhBuilt-in variables: x y r thConstants: pi e 2 -.5 1.4e5 .7e01 πUser-defined function applications: f(e1,..., en)User-defined variables: a-z x^3 + y^3 = 3xy, r^2 = 9/2 Some interesting equations to try: Got feedback?

Relplot was written by Andrew Myers at Cornell University. K-MODDL & Tutorials & Reuleaux Triangle. If an enormously heavy object has to be moved from one spot to another, it may not be practical to move it on wheels. Instead the object is placed on a flat platform that in turn rests on cylindrical rollers (Figure 1).

As the platform is pushed forward, the rollers left behind are picked up and put down in front. An object moved this way over a flat horizontal surface does not bob up and down as it rolls along. The reason is that cylindrical rollers have a circular cross section, and a circle is closed curve "with constant width. " What does that mean? If a closed convex curve is placed between two parallel lines and the lines are moved together until they touch the curve, the distance between the parallel lines is the curve's "width" in one direction.

Because a circle has the same width in all directions, it can be rotated between two parallel lines without altering the distance between the lines. Is a circle the only curve with constant width? How to construct a Reuleaux triangle. Linear format equations and Math AutoCorrect in Word 2010 - Word - Microsoft... To insert an equation using the keyboard, press ALT+=, and then type the equation.

You can insert equation symbols outside a math region by using Math AutoCorrect. For more information, see Use Math AutoCorrect rules outside of math regions check box. In this article Type equations in linear format You can type most equations quickly by using Math AutoCorrect codes. For example, to align an equation array, you can use @ and &, as in the following: \eqarray(x+1&=2@1+2+3+y&=z@3/x&=6)<space> which resolves to this: Here are some other examples: Note When an example is followed by two consecutive spaces, the first space resolves the typed text into the equation, and the second space builds it up.

Microsoft Office uses the linear format described in Unicode Technical Note 28 to build up and display mathematical expressions. Math AutoCorrect symbols Type one of the following codes followed by a delimiting term. Important The codes are case-sensitive. Use Math AutoCorrect rules outside of an equation. Www.touchtrigonometry.org from touchtrigonometry.org. Whats Special About This Number? What's Special About This Number? If you know a distinctive fact about a number not listed here, please e-mail me. primes graphs digits sums of powers bases combinatorics powers/polygonal Fibonacci geometry repdigits algebra perfect/amicable pandigital matrices divisors games/puzzles 0 is the additive identity . 1 is the multiplicative identity . 2 is the only even prime . 3 is the number of spatial dimensions we live in. 4 is the smallest number of colors sufficient to color all planar maps. 5 is the number of Platonic solids . 6 is the smallest perfect number . 7 is the smallest number of sides of a regular polygon that is not constructible by straightedge and compass. 8 is the largest cube in the Fibonacci sequence . 9 is the maximum number of cubes that are needed to sum to any positive integer . 10 is the base of our number system. 11 is the largest known multiplicative persistence . 12 is the smallest abundant number . 13 is the number of Archimedian solids . 17 is the number of wallpaper groups .

Magic square for any digit :: curiousmath :: math is an attitude. Cgi-bin Matrix Solver. Solving a linear equation system of up to 20 unknowns. If you need some help please scroll down to the example. If not, fill the 2 boxes below , then click on the "Go" button. Example As an example, let's say you have the following 3 equations to solve for the unknowns x , y , and z : 2x + 3y + 1/3z = 10 3x + 4y + 1z = 17 2y + 7z = 46 To enter the above system into the matrix solver you enter the number "3" into the small box for the number of unknowns/equations. Into the big box for the coefficients you enter the following numbers : 2 3 1/3 1.0e+1 3 4 1 17 0 2 7 46.0 Notice that each row represents one equation.

Note, that for the coefficients you may enter either whole numbers ( like 2 ), fractions of whole numbers ( like 1/3 ), numbers with a decimal point ( like 46.0 ), or numbers in scientific notation ( 1.0e+01 which is the same as 10 ). After entering all numbers click on the "Go" button. You may check the solution : Which checks out. Relplot: equation plotter.