98|0|odell6rivera|02/28/2012|08:22:29|pumpedcacti|a wrong solution on this website|I guess I%27ll start by being honest. I%27m not a mathematician. In fact I%27m barely a beginner. But%2C I have some skills.  %0A%0AI was presented wi||60||5
96|0|Polar|08/22/2010|14:30:24|Polar|Can anyone check a result|%0A%0AHello%21%0A%0ACan anyone check a result for me%3F %0A%0AIt wrote a program to multiply big numbers and I have diffiulties to check the results b||3||2
81|0|Kenneth|06/27/2010|23:30:14|albert1950|try this puzzle %3F%2F%3F%3F %2B %3F%2F%3F%3F %2B %3F%2F%3F%3F %3D1|ALBERT FROM TAIWAN%0AI don%27t remenber Where I have found this puzzle %0Ait goes like this%3A%0A%3F%2F%3F%3F %2B %3F%2F%3F%3F %2B %3F%2F%3F%3F %3D1%0||105||6
95|0|alexb|12/28/2009|09:15:12|Steven|What is a number%3F|I read Professor Bogomolny%27s %22What%27s a Number%3F%22 but it is not clear to me what a number is.  I suppose a number is a relative quantity.  I s||1||1
85|0|alexb|03/11/2009|16:40:10|kathleen styer (Guest)|error found|Pythagorean Theorem Proof %2344 has an error in the second sentence beginning with%2C %22Start with ...%22  It states that %22A%22 is %22the midpoint ||1||1
76|0|alexb|03/11/2009|16:35:08|rao|wisdom of calling irrational numbers real|At the URL http%3A%2F%2Fwww.cut-the-knot.org%2Fdo_you_know%2Fnumbers.shtml%23deficient%0Ait says%2C%0AIan Stewart questions the wisdom of calling irra||141||3
84|0|Jutta|02/13/2009|07:56:34|albert1950|Is this a mathematical theorem %3F|A few days ago%2C I did a geometric question %2Cand found a very interensting result as below%3A%0A%A1%BCABCD is a square%2C and P is a randomly chose||23||5
83|3|alexb|12/01/2008|16:40:06|viking1|Grade 4 math%3F%3F%3F|My son came home today and said that he had to use %22front end and compensation %22to solve a math problem   523%2B2150%0AI have never heard of this%||1||1
80|0|alexb|07/09/2008|08:01:04|albert1950|Can anyone proves the following question%3F|ALBERT FROM TAIWAN%0ACan anyone proves the following questions %3F%0A%281.%29A negative number multiplied by a negative number the result will%0A    b||1||1
79|0|alexb|06/17/2008|10:42:36|albert1950|calculator suitable for high school students %3F|ALBERT FROM TAIWAN%0A  Hi everybody%3A%0A     I teach mathematics in a junir high schhool%2Cafter each test I %0Amust grade students%27 paper%2Ca few ||7||1
78|0|albert1950|06/14/2008|16:27:18|albert1950|A math puzzle|ALBERT FROM TAIWAN%0A     As below it is a math puzzle%3A%0AA father %2Cwho was a mathematician%2C %22send%22  some amount of  dollars to his son %28w||10||2
75|0|leonsotelo|04/15/2008|06:56:47|Laura (Guest)|Math|My child was quized at school to come up with the number 24 using only four numbers.  They are 7 5 3 1.  They can each be used only once and you can u||84||2
39|0|quintopia|01/15/2008|08:08:41|Laocon|Can%27t reply to %27stumped%27 ...|This is in response to Jack...%0A%0AI think the situation you propose%2C uniquely using the digits 0 to 9%2C combined into decimal or integers to form||1484||9
68|2|manish|06/23/2007|11:23:24|Geoff Egarr (Guest)|Algebra|Can someone please tell me what the line between the two numbers in a fraction is called eg in the fraction 2%2F7%2C the line between the 2 and the 7%||149||7
65|3|Kevin|01/30/2007|07:44:03|tennyson (Guest)|probability|I%27m an adult but stumped by the answer to this 5th grade test problem%3A%0ASam spins the spinner 18 times with the following results -%0AGrape %3D 5||215||14
74|3|mpdlc|12/06/2006|10:40:51|hthr hgugl|black-scholes equation|hi every body %0A%0Ai%27m asking if any body knows about black-scholes equation... ||49||2
63|4|Gino|08/01/2006|08:29:44|elgr53|algebraic opertations|years ago i read in a math puzzle book%2C the name of which i forgot%2C that was translated from russian that if you choose any positive integer great||191||7
70|4|mvml|05/10/2006|14:12:18|Ms. C (Guest)|Math Questions in addition %28 I Stumped%29%21%21%21|I%27m a parent %26 I%27m stumped I%27m trying to get some help for my 3rd grader. What two odd numbers added together equal an odd number%3F %26 What ||33||4
22|0|Warjat|05/11/2005|11:51:24|TWere|Kurdish%2FTurkish method of teaching maths|Does anyone have information of a technique of teaching adding%2C subtraction%2C multiply and divide using the knucles joints on a persons hand%3F I h||738||2
66|0|K-tie|04/01/2005|00:13:13|K-tie (Guest)|maty|I don%27t know%0A||0||0
61|3|Andrew|03/14/2005|23:01:22|nina (Guest)|is math easy %3F|I%27m teacher in elementary school. I confuse because some of my students always said %22 I don%27t want to do it%22 or %22it is difficult%22. So what||155||6
58|0|alan66scot|01/17/2005|20:35:56|DoubleE (Guest)|Just For Fun%21 Magic Y|Another fun%2C first grade %22challenge%22 problem.  We%27ve already solved this one%2C can you%3F%3F%3F%0A%0A%0AMagic Y%0A%0AX--------X%0A--X-----X%0||115||5
55|0|alexb|12/06/2004|00:35:46|Double E (Guest)|Just For Fun%21 Magic C|Another fun%2C first grade math %22challenge%22 problem.  We%27ve already solved this one%2C can you%3F%3F%0A%0A%0AMagic C%0A%0AUse the numbers 1 - 8 ||71||3
57|0|alexb|09/06/2004|23:13:55|DoubleE (Guest)|Just For Fun%21 Magic Mini-Triangles|Another fun%2C first grade %22challenge%22 problem.  We%27ve already solved this one%2C can you%3F%3F%0A%0A%0AMagic Mini-Triangles%0A%0AX----X----X%0A||32||2
60|4|alexb|03/01/2004|15:34:19|1mathworld24|Math Glossary on CTK website|I would like to obtain a printed copy of the Math Gloosary but I have ony been able to print a listing of the index.  It seems that I must open every ||1||1
56|0|ECON|02/12/2004|08:51:41|DoubleE (Guest)|Just For Fun%21 Magic T|Another fun%2C first grade %22challenge%22 problem.  We%27ve already solved this one%2C can you%3F%3F%3F%0A%0AMagic T%0A%0AX X X X X%0A----X%0A----X%0||16||4
54|0|Jeff|01/22/2004|14:47:15|DoubleE (Guest)|Just For Fun%21  Magic Square|Another fun%2C first grade %22challenge%22 problem.  We%27ve already solved this%2C can you%3F%3F%0A%0A%0A                            Magic Square%0A%||10||5
53|0|alexb|01/09/2004|11:45:32|DoubleE|Just For Fun%21 Magic I|My first grade son is working on a series of math %22challenge%22 problems that others may find fun and interesting to solve%21  We%27ve already solve||1||1
31|3|alexb|01/08/2004|21:16:20|Victorious-Not|pentagon addition| Using numbers 1-10 place the numerals on each corner with one numeral in the midline. use each numeral 1 time%2C make the 3 numerals on each side add||542||11
52|2|alexb|12/31/2003|08:42:51|t3h84|Cryparithmic Puzzle|Dear friends %2C%0A  i lokked around for solving these type of puzzles.%0Ai could not find any idea to solve %0Aspiro %2A 7 %3D agnew %0A%0Ahow to sol||1||1
47|0|deat|12/29/2003|08:35:16|tom spallone|correct answer%3F%3F%3F%2F|My 3rd grader had the following quetion%3A%0A%0A%0A       Abe wants each person at his party to have about 1 cup%0A  of punch. If he invites 18 childr||230||3
51|3|CSpeed0001|12/28/2003|21:58:45|goodmanlois|binary numbers or different bases|Iam looking for teachng materials for a brilliant fourth grader. Want to teachher about binary numbers and different number bases. Does anyone know of||9||2
38|3|sfwc|12/24/2003|19:12:11|Rich (Guest)|stumped|Years ago when I was in college%2C our professor gave us a %22brain teaser%22 and I cannot recall the answer. I hope you can help. It was something li||763||6
50|0|Aly|12/21/2003|11:33:51|someguy (Guest)|0%2F0|does 0%2F0 equal anything%3F some people said it equals some constant %3AS||26||6
18|0|Hogwish|10/01/2003|19:43:14|Cherie (Guest)|Countdown sequence of numbers|My ten year old son asked for help w%2Fsome math homework.  It is called countdown-and asks for the final number in the following sequence%0D%0A%0D%0A||1213||10
49|2|alexb|07/15/2003|19:19:23|nugget307|Re - A baffling predition|I have tried this several times and it just does%27nt work. Any help%3F%0A||1||1
48|2|alexb|02/19/2003|09:05:13|Stuart Carduner (Guest)|embedding applets|I was wondering if we could embed applets such as the geoboard java applet into classroom web pages%2C so that we can include on the same page problem||3||1
33|0|Katy|01/10/2003|22:58:25|Amy|how come...|Hello. %0D%0AHow come most famous mathematitians and scientists are all males and none of them are females. Why are males always better than females i|on|2624||34
10|0|RicBrad|12/11/2002|09:58:29|Sal0218|Integers|As a parent of a kid who thinks you know nothing%2C please tell me the answer to this problem%3A%0D%0A%0D%0A    14-27%3D   %3F%0D%0A%0D%0AI say it%27s|on|2417||18
14|0|jman_red|10/09/2002|17:01:33|Li Guorong|What A Child Says about Infinite|My four-year-old son told me recently that the positive infinite and negative infinite meet at a point which is also a zero. I was amazed about what h|on|2338||15
44|0|alexb|10/02/2002|09:46:04|Peter (Guest)|teaching sets|Dear Math Interest Group%2C%0A%0AMy children%27s school doesn%27t teach sets until middle school %286th grade or above.%29  What can I do to teach the||39||4
43|0|Michael Klipper|08/12/2002|21:24:07|phil (Guest)|question you can%27t answer|i recently found this site and was reading though some of the stuff. one thing in particular was a question you can%27t answer.%0Athe question %22is n||9||4
40|2|Apparition|05/06/2002|13:14:03|loucasa|Splitting a square|Hello all%2C%0A%0AThis problem was an exercise at a recent %22math night%22 designed for 3rd graders%2C and one solution has all of us parents %28gene||193||10
37|5|alexb|01/14/2002|17:03:48|alexb|Gender Differences|%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%0A%0AFrom the The News %26 Observer %2F NewsObserver.com%2C  %2C ||0||0
36|0|Tempjac|01/13/2002|13:14:20|Tempjac (Guest)|relative of A. F. Moebius|Hi%2C I am a relation of A.F.Moebius. My name is Jacqueline Moebius and I am an elemantary school teacher in CT. I found your web sight while looking ||0||0
35|2|Amanda|01/11/2002|08:20:17|Davey Gravy (Guest)|Newton Smewton|Hi I%27ve been told that Newton%27s 3rd law says that every action has an equal and opposite reaction. How then does anything move%3F I mean that if s||64||4
34|3|alexb|11/30/2001|20:57:20|Ginger|Relatively prime numbers|Hello - I have a problem.  I am a student in elementary eduducation and I have come across a problem that I don%27t understand.  Please help if you ca||43||5
32|0|alexb|11/13/2001|14:36:44|ajr123|Getting to 100|Here%27s a number puzzle for early math that should be easy but is it%3F%0D%0A%0D%0AUse all the digits 1 to 9 only once either as single integers or c||57||1
24|2|KBug|10/17/2001|21:09:14|Kathy|Math puzzles and games books%3F|Hi%2C I appreciate the math puzzles and games on the web site but my computer is very slow.  Could you suggest some fun math puzzles and games books o||119||2
16|0|cathrine (Guest)|03/11/2001|23:15:29|Sue (Guest)|Math|I am a third grade student. I had a math problem%2C I got all the way to the last part of the question and was confused by the word %22gross%22 can an||548|5.48955223880597|3
15|0|Ed Wall (Guest)|11/13/2000|22:44:30|alexb|Pestallozzi on number words|Following is a copy of my post to the Numeracy listserv%3A%0D%0A%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3||445|5.51051051051051|1
11|0|alexb|10/18/2000|21:40:27|Glenn and Sher MacDonald|counting at 4|Hi There%3A%0D%0A %0D%0AI just found your web site and was looking for ideas on teaching my four year old %28she will be five in May%29  math.  She se||484|5.48072562358277|1