 Adding Feet and Inches  NASA Lewis Learning Technologies Project
If Sally places a 3 feet 6 inch tall rocket atop a 1 foot 8 inch tall launch pad, how tall will the entire unit (rocket and launch pad) be when she is done? A detailed answer is provided. From NASA's 9th Grade Math Proficiency Test.
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 Adding Integers (SMILE)  John Charles Thomas, N. F. Simeon Vocational High School
A lesson designed to teach students to add and subtract integers, and define terms (additive inverse, identity element of addition, associative property of addition, addend, sum, magnitude). From the Arithmetic section of a collection of almost 200 single
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 Adding/Subtracting Fractions  Math Forum, Ask Dr. Math Common Question
A selection of answers to questions about adding and subtracting fractions, including how to find common denominators.
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 Addition Flashcards  A+ Math
Elementary online flashcards for practicing simple addition.
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 Add It Up  CleverMedia
Combine tiles that sum to the target number. Earn extra points for combining more tiles or consuming less time; win a bonus for using up all the tiles; lose points points for every tile left on the board. Requires the Flash plugin.
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 All About Addition (AAA Math)  John Banfill
Interactive math exercises, lessons, and games covering addition facts and
addition of whole numbers, decimals, and fractions.
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 ArithmaClick  J. D. Brown
Practice addition and multiplication while keeping score.
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 Big Daddy's Freeware  Vincent DiCarlo
Small, simple DOS programs to download for effective drilling of basic addition, subtraction, and multiplication.
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 Chance Encounters at ICME9  Cut the Knot!, Alexander Bogomolny
From the International International Congress on Mathematics Education held in Tokyo in August, 2000, impressions that came from personal, often unplanned, meetings with such mathematicians as N. P. Dolbilin (who outlined the history and the current state
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 Computer Solution Central
Shareware games for Windows machines and PDAs. Includes a free solitaire game, educational games focusing on addition and multiplication, and a date calculator.
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 Counting and Place Value (SMILE)  Carole Gills, Edward Coles School
A lesson for grade 1 designed to give first grade students a concrete understanding of place value by providing concrete opportunities to practice counting, adding, and subtracting, using a phenomenological approach. From the Arithmetic section of a collection
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 Count the Apples  simplyfluid.com
A free online learning tool that uses images of apples to help preschoolers
and kindergarteners learn to count up to 10 by both numbers and words. There are 4 levels of increasing difficulty for sequence and image patterns.
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 Daily Squares  Steven Pomeroy
Arrange the digits in the 4×4 grid so that each column, row, and diagonal adds up to 34. Visit every day for a new magic square puzzle; check the archive for past challenges.
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 DNA Adds Up  Ivars Peterson (MathLand)
Calculating that 0 + 0 = 0, 1 + 0 = 1, and 0 + 1 = 1 is normally no big deal. When the calculations are done in the lab using DNA molecules, however, these elementary manipulations look considerably more interesting. In the July 12 [1996] Science, a team
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 Dositey.com  Dositey Corporation
Interactive lessons, exercises and worksheets, educational games, openended questions in Math and Language Arts, and more.
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 Eggy's School
A math game for beginning addition: click on the chalk and find the answer to singledigit addition.
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 Equate: The Equation Thinking Game  Conceptual Math Media, Inc.
Have fun creating equations crosswordstyle. An arithmetic version of Scrabble, Equate is a math board game for family and classroom. Earn higher scores by using division or fraction tiles, or by playing tiles on premium board positions that double or
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 Extending Our Knowledge of Place Value (SMILE)  Angie Morris, Burnham School
A lesson designed to reinforce the knowledge of place value for first and
second graders by using their auditory, visual, and/or kinesthetic learning styles and the numbers 1099 only. From the Arithmetic section of a collection of almost 200 single
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 Famdays
A famday is a day on which the combined ages of family members add up to a whole number of years  in a sense, a family birthday, a reason for a celebration that contributes to strengthening family ties. Students can compute famdays for their families
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 A Fictional History of Place Value (SMILE)  Bette B. Jarrow, Goudy Elementary School
A lesson designed to teach students to rename a two or threedigit number in several different ways, including expanded form; and to perform addition and subtraction with the application of regrouping and the use of zero as a place holder. From the Arithmetic
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 Financial Literacy Math Quizzes  HowToSaveMoney.me
Quizzes for practicing addition and subtraction of dollar and coin amounts, presented with pictures of US currency or as numerical expressions. "Grade My Quiz" or generate new problems with the click of a button. The site also offers finance calculators,
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 Flash Cards for Kids  Donovan Follette
Currently, Flash Cards (shareware for Windows) supports addition, subtraction, and multiplication. The addition facts are enabled in the download file. The subtraction and multiplication facts can be enabled with a registration fee of $12.00. (Washington
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 Flash Games  ATK Solutions, Inc.
Flash applets and games include rotating 3d cube; mind boggle square, which challenges you to slide a square across a surface by sliding other quadrilaterals into the unoccupied spaces; Futoshiki, which involves positioning counting numbers on a grid
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 Games Using Multiplication (SMILE)  Amaechi Onyeali, Carter Elementary School
A lesson for the elementary grades in which students play two games to reinforce their multiplication facts and their addition skills. From the Recreational and Creative Math section of a collection of almost 200 single concept lessons by the Science
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 GoKidding  Sarveshwar Rao
Flash activities on counting, adding, subtracting, and naming shapes (polygons). Worksheets include circle mazes, fun with circles, and fun with triangles.
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 Halloween Math Word Problems  Patricia Taverna
Addition word problems with a Halloween theme, as illustrated and written by Mrs. Taverna's second grade students. Mrs. Rollman's second graders posted their own problems at http://www2.lhric.org/pocantico/rollman/04/math.htm. Click and hold down over
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 Hidden Variable Studios  Hidden Variable Studios, LLC
Makers of Tic Tactics, Threes, and other mathematical strategy apps for Android, iOS, Kindle Fire, and Nook HD.
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 How To Add Without Using Fingers  James Kent Murray
Teacher guide and student workbooks, designed to help students add faster and more accurately.
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 Javascript School Math Toolkit  Jeff LeMieux
JavaScript Pythagorean solver, proportion problem solver, percent proportion problem solver, chord to circumference calculator, denominator to repeating decimal checker, subtraction worksheet generator, addition worksheet generator, multiplication worksheet
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 Kids SyvumBook Series  Syvum Technologies, Inc.
Interactive educational software for English, Knowledge, and Math, targeted for kids ages 612. Each Kids SyvumBook offers multimedia strips and main activity frames. Four levels of Math SyvumBooks help improve arithmetic, algebra, and basic number skills
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 KRN Software
Free online games for Javaenabled browsers. Java Edutainment games require matching shapes and colors in Space Cargo and Cargo Bay, simple addition in Numeric Defenders, and odd and even number identification in Even Steven, Jr.
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 The Lighter Side of Dr. Paulsen  William Paulsen
A collection of online games and puzzles: blackjack, The NonZero Difference Game, No Alibi (a mystery detective game), a haunted mansion labyrinth, sliding tile puzzles, and The Prime Maze.
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 MATH DITTOS 2 (Arithmetic Software)  Wood
The MATH DITTOS 2 series is a factsupported approach to teaching computation designed for special learners by a career elementary schoolteacher. Each page in the series presents a limited number of problems with some workspace. The facts necessary to
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 Math Fun and Educational Gifts and Specials  24Hours7Days
Purchase Clever Catch Balls, Fraction Bars, Decimal Squares, Math Chase, and other board games and manipulatives for practicing addition, algebra, decimals, division, fractions, money, multiplication, patterns, subtraction, and time.
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 Math Game Using A TicTacToe Board (SMILE)  Gertrude Franklin, William Penn
A lesson for the elementary grades that introduces addition, subtraction and
multiplication by using TicTacToe methodology; introduces a new method in using the TicTacToe grid; and presents a new problemsolving method. From the Recreational and
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 Math Is Power Math Puzzles  National Action Council for Minorities in Engineering (NACME)
Six Shockwave games. CodeBreaker requires using trial and error to deduce the correct string of colored circles, given feedback on position and quantity. In Space Tag, two players take turns moving on a grid, one of them attempting to occupy the other's
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 Mathlets for Teaching Elementary Mathematics  Dave Posner
Animated JavaScript applets of visual models to seed elementary students' preendowed "imaginations with images tailored to evoke patterns that are the basis of the elementary mathematics curriculum": base ten counting (grouping by tens, grouping tens
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 MathMastery  MathMastery.com
Play CyberChallenge Shockwave addition, subtraction, multiplication, and division games. Test Your Skills with placement exams (online or printable) on adding, subtracting, multiplying, dividing, fractions, and decimals. My Math Class offers Shockwave
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 Math Pop
Sum to the starred number in the lower right by popping the numbered balloons that fly up. Reach the target without exceeding it, and Math Pop dynamically adds more time — while bumping up the target quantity.
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 Math  PrimaryGames.com
Games and drills for very young students: Two Minute Warning (drills addition and subtraction); One Little Ball (numbers 15); Sammy's Shapes (geometric shapes); Take It Away (subtraction); Add 'em Up (addition).
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 Math Run  Christian Strang
This Flash game presents you with a sum which may or may not be correct. As the equation scrolls up your screen, use the left and right arrow keys on your keyboard to indicate whether it is true or false  quickly, before a "run" of equations fills up
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 Maths Investigation Page: Hundred Words  Porter Croft Church of England Primary School, U.K.
If you give the letters of the alphabet values so a=1, b=2, c=3,......z=26, then any word has a total value. So Tim = 20+9+13= 42. What is the value of your name? Can you make a hundred word?
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 Math Stories.com: House of Math Word Problems for Children  MathStories.com, Inc.
Word problems for grades 16, singly and in interactive or printable worksheets. Problems cover all five major math strands, and include openended and critical thinking problems. Problems are aligned to state and NCTM standards, and available in English
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 Measuring Temperature, Adding Degrees  NASA Lewis Learning Technologies Project
From the thermometer reading below, about how many more degrees must the temperature rise to reach 50 degrees? A detailed answer is provided. From NASA's 9th Grade Math Proficiency Test.
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 Measuring with Two Containers  Math Forum, Ask Dr. Math Common Question
A selection of answers to questions about using two different containers to measure out a third quantity, such as "How can you measure 7 liters using only 4liter and 9liter pails?"
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 Money: Demonstrating Coin Values up to $1.00 (SMILE)  Camille Gales, Coles Elementary School
A lesson designed to teach students to use a variety of coins to make change up to the value of a dollar. From the Arithmetic section of a collection of almost 200 single concept lessons by the Science and Mathematics Initiative for Learning Enhancement.
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 My Rummy  MyRummy.com
A math card game designed to help math teachers develop their students' number sense and understanding of addition and subtraction, and also to promote reading, listening and quick decision making among the players.
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 NewMedia Project: Integers  MathStar, Los Angeles County Office of Education
The NewMedia Project area of MathStar offers resources in mathematics for middle school teachers and students. The Integers unit is comprised of three lessons: Introducing Integers, Adding/Multiplying Integers, and Subtracting Integers. Each of the three
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 A 'New Set of Numbers' (An Introduction of Integers) (SMILE)  Barbara Barlow, Caldwell School
A lesson for grade 6 designed to teach students to add and subtract positive and
negative integers. From the Arithmetic section of a collection of almost 200 single concept lessons by the Science and Mathematics Initiative for Learning Enhancement.
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 Number Addition Race (SMILE)  Janice Schaults, Randolph Magnet School
A lesson for elementary students designed to teach addition: students solve addition word problems relevant to their experience and participate in an addition game that uses a phenomenological approach. From the Arithmetic section of a collection of almost
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