Introduction about mathematics homework help tutorial
In this article you will get help on maths homework with the help of the tutor through online. Online help will be easier for the students to their homework problems in mathematics. Students can get instant help from any part of the world. This tutorial also include word problems. Below are some of the mathematics homework problems.
Help on Homework Problem in Mathematics:
1. Add 324 + 261
Tutor Solution
3 2 4 Add the ones digit 4 + 1 = 5
2 7 1 + Add tens digit 2 + 7 = 9
---------- Add hundred’s digit 3+ 2 = 5
5 9 5
---------- This could also help us on formula! for circumference
Keep reading may be in the next lesson let me help you with Algebra 2 Calculator
math homework online help
Tuesday, August 31, 2010
Telegraph TOI : IIT JEE 2010 Cut-off Raises Brows
Telegraph ::
IIT cut-off raises brows
CHARU
The concerns were dismissed by a top IIT-JEE official as “tilting at windmills”. But the fact that the aggregate cut-off did not change much in 2010, suggesting that the difficulty level of questions was similar to previous years’, offers legitimacy to these concerns.
The IIT-JEE this year was ravaged by errors in instructions given in question papers. One of the major errors involved instructions, which erroneously switched the labelling on physics and math answer scripts, which are read by an optical mark reader (OMR) machine.
Instructors at all test centres announced the error once it was recognised, but many students had already started marking answer scripts by that time — and these answer scripts were not replaced with fresh ones. Amid fears that many students might have marked physics answers where they were to mark math answers and math instead of physics for no fault of theirs, the IITs announced a “corrective measure”.
The OMR machine would mark answer sheets meant for physics (or math) for both subjects and award students the higher ! score. This way, the institutes argued, a student who followed! the ins tructions and marked correct physics (or math) answers on the math (or physics) answer sheet would not lose out.
But in an affidavit before
A handful of such questions — where an incorrect answer matched the correct answer of the other subject — would suffice to clear the average cut-off in that subject, he argued.
Kumar’s concerns have now triggered a debate within the IITs and among IIT-JEE observers over whether his arguments need a relook, following ! the hike in subject cut-offs announced by the IITs on Saturday! .
The IITs first shortlist students who clear subject cut-offs in each of the three subjects tested — physics, chemistry and math. An aggregate cut-off of total scores across the three subjects is set next, based on the total number of seats available to finalise selected candidates.
The subject cut-offs in physics, chemistry and math this year are 19, 19 and 17 respectively as opposed to 8, 11 and 11 in these subjects last year, according to data released on Saturday by the IITs. The sam! e formula — the average marks of all students in a subject is set as the subject cut-off — was followed both in 2009 and 2010.
The hike could normally be explained by easier questions — or better average performance — this year. But such a scenario would also mean much higher aggregate scores of students on average — 55 as opposed to 30 last year. This, in turn, would translate into a correspondingly higher aggregate cut-off.
The aggregate cut-off in the 2010 JEE, according to the IITs, was 19! 0 as opposed to 178 last year — a difference statistical! ly much smaller than the variation between aggregate averages in 2009 and this year. In other words, while the average scores of students improved, the toppers performed almost similar to their counterparts last year — suggesting the question papers were overall not much easier in 2010 compared with 2009.
Some candidates scoring higher than they deserved, because of the corrective measure, would offer a possible explanation for the hike in subject marks without a corresponding jump in the performance of qualified candidates.
Times of
IIT JEE average mark almost doubles but question remains
Akshay Mukul, TNN,
Is the increase in cut-off — calculated on the basis of average performance of candidates — a case of improved standards or is it due to the corrective measures applied by IITs to neutralise errors in the JEE question paper as pointed out by TOI?
In order to paper over its mistakes, IIT-JEE, for the first time, evaluated each answer sheet in two ways — sequential question numberwise and subject headingwise. The higher score of the two systems was taken as a candidate’s score. This strategy wa! s adopted to offset the interchange of subject headings of mathematics and physics in question paper and Optical Response Sheet. IIT is not disclosing the marks scored by both ways of evaluation. Now, IIT insiders are pointing out faults with this method.
Normally, IITs evaluate the JEE question paper by the sequential method. A senior faculty member of IIT-Delhi said, “Sequencewise evaluation is how evaluation should be done. But subject ! heading-wise evaluation leads to going through mathematics ans! wers on the basis of instructions which was for physics. A similar thing happened in case of physics answers. The second way of evaluation may give higher score to candidates who performed poorly.” JEE is a traditionally low-scoring examination.
The cut-off for general category candidates this year is 190, a slight improvement from last year’s 178. However, this year’s average marks for mathematics, physics and chemistry is 17, 19 and 19 respectively, making the average marks 55 out of 489. The same procedure was applied for deciding cut-off in 2009 and 2010. If we compare the average marks of 2009 and 2010, it is clear that cut-off of physics this year is almost 2.4 times last year’s cut-off. Mathematics cut-off is 1.5 times more than last year.
This is much higher than the subject average of 2009 that was 11 (mathematics), 8 (physics) and 11 (chemistry). The average marks last year was 29 out of 489. Thus, the overall performance in 2010 is 1.9 times better than last year. The marginal increa! se in cut-off — 178 to 190 — is indicative that th! e perfor mance of the selected candidates has marginally improved. However, the overall performance is almost double. “A clearer picture,” a source said, “will emerge only when IITs reveal both ways of evaluation.”
math answers
Word Problems and Unit Conversions
For some people, working with variables that have different units is very easy. They can conceptualize the relationship between the different variables in a way that seems natural to them, yet remains very difficult to explain to others. There are even more people who cannot do this type of math so automatically, and often struggle to solve problems... myself included. However, there is a trick to solving these questions, and the solution lies, quite simply, in keeping track of the units. I will try to demonstrate.
help with math word problems
I will start simply, with multiplication and division. You know that if one number is on the top and on the bottom of a division line, you can cancel them out to reduce things:
You also know that you can do this when you are working with variables, like x and y:
So then, it's only natural that you can do this with units as well!
Now, here is the trick. If you are struggling with the concept of a word or other problem that deals with units, change the way that you are looking at it, to focus on the units involved. They will guide you towards the final solution.
Let's try a basic physics problem: How far will an object travel in 10 seconds if it is moving at a constan! t speed of 25 meters/second? This one might not be too di! fficult to conceptualize, but it demonstrates my point. Watch what I do with the units at the start, if you are not familiar with this part.
As you can see, the units cancel out to leave just the 'meters.'
Let's try one that is a bit more complicated: If a force of 10 N pushes a 10 kg block along a flat, frictionless surface for 5 seconds, what is the block's average velocity? This one is undoubtedly more difficult to do in your head, but if you keep track of the units (what you have, and what you need), then you should be able to do it. For those who aren't in physics, it is easier to know that the uni! t Newton, N, is equal to (kg) x (m) / (s)^2... blogger is still terrible with superscripts and equations. :(
As you can see, we wanted velocity (m/s) in the end, and so I just worked with the units until I got what I wanted. From a physics point of view, I used Force = Mass x Acceleration, and Velocity = Acceleration x Time.
Currency conversions are a common everyday example of where you can use this trick. If I say that the exchange rate is 0.985 $US / $CAN, and I want to know how much $US I can exchange for $232 CAN:
Naturally, it's best to try to understand the concepts of the questions, and the more complex questions won't be quite so easy to muddle through just by tracking the units. However, hopefully you can see the benefit of looking at these types of problems from this angle, and it will help you to solve them. I learned this technique in high school, and I still benefit from it. As always, feel free to drop me a line if you would like me to clear anything up. :)
help with math word problems
Fall Problem Solving
- Candy Corn presents a triangular numbers problem using a candy corn pattern. Younger students might use candy corn to model the problem. A sample solution shows how older students might use an input-output table to model the pattern and find the solution without the use of manipulatives.
- Younger students will enjoy analyzing and completing Fall Patterns. They should then classify the pattern and explain their reasoning as part of the class discussion. It is possible that students will see different patterns in some of the items so their explanation and justification are very important mathematical discourse.
- Annual Fall Parade challenges students to use the triangular pattern to figure out how many students are in the fourth grade. Given the number of full rows, students must apply the pattern and use effective recording (picture, table, etc.) to explain their reasoning.
- See more Problem Solving Resources from the Mathwire collections. All problems are classroom-ready in PDF format. Many contain a sample solution for teacher use.
graphing coordinates to make a picture
Online Statistics Tutorial
We had our 3rd Parent Teacher Conference last Sunday. The conference helps analyze the students performance in the class. All parents were given at least ten to fifteen minutes time to talk with respective teacher/adviser regarding the performance of students in the class. Honestly, even without seeing my daughter's report card, I already knew how she responds in the class. My daughter got a superior grade in IQ Test and English and I'm just so proud of her but not with this subject, statistic. I didn't bother to blog about her superior grade in other subjects because I'd focussed on the subject where she got an average grade. I'm looking for Statistics help for her. I'll be happy and contented with above av! erage grade if ever she did not achieve superior grade in Statistic and so we're now actually looking for Statistics tutor.
My two girls have a hard time understanding Statistic. As early as today I already know that they will encounter harder Statistics problems later. My older daughter has been asking me what course in college she will take without any Statistics questions. But I told her that everything now can be learned online. I told her there's free Statistics help to run to! . I en couraged her to take a course that she loves even with Math or Statistic. Everything is available online and Statistics answers can be found at Tutor Vista. Over four million are now depending on online tutorial and everything is right there at the comfort of your home with unlimited tutoring session. Free Demo Session is given to first time user and so everything is just made easy with online tutorial.
free statistics tutor
Comprehensive Online Math Tutoring By TutorVista.com
! Students nowadays are finding it harder and harder to come to grips with their math lessons in school and they have nowhere to turn to for help. Luckily, there is TutorVista.com to provide them online tutorial help for all their Math questions in school whether they are in k-12 or college.
They can also seek expert advices and tutorial services for all their needs in Geometry help or Chemistry help which have caused many students sleepless nights and untold worries.
Even in the very hard and complicated subjects like their problems in Physics, TutorVista.com will enable them with great Physics help in all their home works and Physics problems in schools. Now, these students can relax and overco! me their fear of math and other related subjects because Tutor! Vista.co m is there online to provide them with valuable services 24/7 at very affordable prices.
free online math tutoring
Subscribe to:
Posts (Atom)