Arrays are an important part of javascript. There are situation where you may want to add more items to an array at run time. In order to add a new item to the end of an Array, we use the push()
function.
.push() takes one or more parameters and pushes them to the end of the array
e.g
var arr = [1, 2, "three", 4, "hello"];
arr.push("good");
The resulting arr will now contain:
[1, 2, "three", 4, "hello", "good"]
You can also pass multiple item to .push(), e.g:
arr.push("best", 4, "amazing");
I hope you now are now familiar with .push() function. In the next blog post, I will explain the
pop() function.
Task: Consider the following array
var fruits = ["apple", "banana", "orange"];
Add two more fruits to the fruits array...

Thank you for respecting my time as much as I respect yours. Effective February 12, 2020, I will be implementing the following policies:
Cancellation Policy:
Out of respect for your time, if I need to cancel a lesson less than two hours from the start of your lesson, your next lesson will be free.
If you cancel in less than two hours from the start time of our lesson, you will be charged a 50% cancellation fee.
If you cancel after I am in my car to travel to your location or within 30 minutes of your lesson time (whichever comes first), you will be charged 100%.
If you have a standing lesson with me and you cancel more than two times in an eight week period, all future cancellations will be charged at 100%. This policy will be applied on a rolling basis.
Late Policy:
Out of respect for your time, if I am late for a lesson by more than fifteen minutes, your next half-hour of tutoring will be free.
If I arrive...
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In English we have 5 vowels orthographically(in spelling), but phonetically(in terms of speech sounds) there are 14 different vowel sounds! Spanish only has 5 vowel sounds! This can make it rather difficult for Spanish speakers to pronounce English words. For English speakers learning Spanish, this means that we have to narrow down our vowel pronunciations.
When it comes to pronunciation, I always tell my students to practice their vowel pronunciation in Spanish:
a-e-i-o-u is pronounced, in Spanish, "ah"-"ay"-"ee"-"oh"-"oo"
The good news is that these vowels never change in Spanish pronunciation. Once you get those down, you can pronounce any Spanish word with confidence.

As much as I respect your time, I also expect you to respect mine. When scheduling a session, I reserve that time for you and I lose both money and time if you provide an abrupt cancellation. In general, if you:
Cancel within 2hrs of the lesson, then you will be charged for 75% of the scheduled time.
Cancel within 2-8hrs of the lesson, then you will be charged for 50% of the scheduled time.
Cancel at least 8hrs before the lesson, then the cancellation fee will be waived.
If you are late to a lesson, then you will be charged for the time that you missed. If you are 15 or more minutes late, then you will be charged for the full time of the lesson, and the lesson will be cancelled.
I reserve the right to cancel lessons as I see fit, however you will never be charged for lessons cancelled in this way.
If I am
5 minutes late to a lesson, then you will get a 25% discount on the first hour.
15 or more minutes late, then...
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We all heard about the simplification to use a t-distribution when sample size is small (n<30) and Z-distribution when n is large (n>30); indeed, with increasing n, the distribution of the sample
means will converge to the normal distribution thanks to the CLT. But what truly happens when n is not large enough?
The requirements for a Z-distribution are:
1) The sample mean is normally distributed
AND
2) The population standard deviation σ is known (in order to use σ for our statistic test)
The requirements for a t-distribution are:
1) The sample size is large (n>30)
OR
2) The sample is normally distributed (may require separate normality tests)
OR
3) The population is known to be normally distributed but with standard deviation σ unknown (so we must use s instead).
So really, when the sample size is small (n<30), AND when the population from which the sample is taken is known to be normally distributed with...
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I value my time as much as I value yours. Thus, the following Cancellation and No Show policies are in place:
All cancellations must be made at least 12 hours prior to our scheduled lessons (via Wyzant’s messaging system). If a cancellation occurs 12 or more hours before the lesson’s start time, you will not be charged any cancellation fees.
Any cancellations that are made between 2 and 12 hours in advance may be charged for up to 50% of the lesson’s cost. Any cancellations made <2 hours in advance may be charged for up to 100% of the lesson’s cost.
If a student does not show up within 30 minutes of the lesson’s start, the lesson will be considered canceled and will thus be charged in full.
If any family or personal emergencies come up, I will take them into consideration and excuse the cancellation at my discretion.

Here's a sample of some of my latest work for Digital Tutors:Sneak Peek, Nested Families and Shared Parameters The full course goes live on March 2nd.

I am a new tutor so a few days ago when l received a response to one of my first applications, l was very excited.
This "student" requested that we talk on phone to finalize the arrangements for date and time. I told him since l was home on spring break, he could call me on my land line but he wrote back requesting my cell telling him that when l am at home reception is very poor on my cell phone. He kept insisting on getting my cellphone instead, l was puzzled why. I never heard back from him. A day later l got an email from Wyzant that they had determined this not to be a true student inquiry. I have not figured out yet what this fake student was after. Can anyone tell me? Just be aware.
Christine M.

In math or science we come across terms such as inverse proportion and direct proportion. When two variables are directly proportional an increase in one variable causes an increase in the other variable. When two variables are inversely proportional an increase in one variable causes a decrease in the other variable.
Inverse Proportion:
To illustrate inverse proportionality, I will use a common physics problem. Two golf balls are thrown down from a tall building at the same time and one ball has twice the velocity of the other ball. Which ball hits the ground first assuming only velocity is different?
We already know that velocity is approximately equal to distance / time.
Let the velocity of the slower ball be v. Assuming only the velocity of the two balls is different, we can say approximately v = d / t. We can eliminate wind force, atmospheric force, and force of gravity since both balls will be affected equally.
If you increase v,...
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My Cancellation Policy
I value my time spent teaching, and your time spent learning. To facilitate the scheduling of lessons, I use the following cancellation policy:
Cancellation Policy for Students:
If a student wishes to cancel the lesson, she/he must provide notice at least 8-24 hours prior to the beginning of the lesson.
If a student cancels the lesson between 8 and 4 hours in advance, a cancellation fee of up to 35% of the lesson cost may be assessed.
If a student cancels the lesson between 4 and 2 hours in advance, a cancellation fee of up to 50% of the lesson cost may be assessed.
If a student cancels less than 2 hours in advance, a cancellation fee of up to 85% of the lesson cost may be assessed.
If a student arrives to a lesson late, the lesson cost will include the time missed by the student.
If a student arrives to a lesson more than 15 minutes late, I may consider the lesson cancelled without prior...
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In working with other company's QuickBooks records, I have noticed that many users record all sources of income as Customers and all payees of expenses as Vendors. Although that method may seem to be sufficient, QuickBooks has a feature that is often underutilized - the Other Names List.
First, let's consider Vendors. QuickBooks was designed so that when a company receives a Bill from a Vendor, the bill can be recorded against the vendor and QuickBooks will track unpaid Bills as Accounts Payable. When the Bill is paid, then the balance in Accounts Payable is reduced. This is especially helpful for businesses that want to track their outstanding liabilities.
But there are often many expenses that a business may incur that it will never receive a Bill for. For instance, an employee on a business trip may use a company credit card to purchase gasoline for a rental vehicle, pay tolls and parking, eat meals in various restaurants, and stay overnight in a hotel. A sole...
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I don't know how every one is doing on tutoring, but I am getting no student referrals from the many questions I have answered over a very long time. The purpose of answered questions is to help students and to create leads for future tutoring. Nothing of that is happening with me. I feel that the students are taking advantage of the system and our generous conduct. Every time they want a question answered or a problem solved they post it and they get what they need from the many tutors responding to them. Once they get what they need then bye bye. They don't need me or you anymore. They are getting all their questions answered and problems solved, so why would they need you or me for a lesson. This is not creating leads for the tutors, but is creating a way to get free tutoring for the students. I am testing to see how you feel about that. I feel that Wyzant policy is not working for the tutors, but working well for the students. If you think that the student is going to contact you...
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Here are a short list of CTRL shortcuts you can use in Excel to speed up your navigation.
CTRL A = SELECT ALL RANGE OR TABLE
CTRL C = COPY
CTRL X = CUT
CTRL V = PASTE
CTRL O = OPEN
CTRL W = CLOSE
CTRL HOME = GOES TO CELL A1 (HOME)
CTRL END = GOES TO END (LAST EDITED ROW AND COLUMN of WORKSHEET)
CTRL Z = UNDO LAST
CTRL Y = REDO LAST
CTRL S = SAVE
CTRL T = CREATES TABLE FROM RANGE
CTRL : = INSERT TIME (NOW)
CTRL ; = INSERT DATE (TODAY)
CTRL SPACEBAR = SELECT ENTIRE COLUMN
SHIFT SPACEBAR = SELECT ENTIRE ROW
CTRL PAGEUP = GOES TO PREVIOUS WORKSHEET
CTRL PAGEDOWN = GOES TO NEXT WORKSHEET
Do you have one which is not listed? post it below in the comment section :)

My wife is worried about me because I was tutoring in my dreams last night.

So, your instructor asks you to complete research to use in writing your essay. You pull some journal articles, grab a few books on your essay topic and start reading. You've taken some notes, but what do you do next?
If you are unsure of how to effectively use research materials to support your thesis, there are some useful methods for summarizing, paraphrasing, and using direct quotations in your essay.
Let's start with summarizing, since that is what you should be using most often in your paper. When you summarize, you want to share some of the author's main points. Choose explanations and examples from the text that support your arguments. When you summarize, you are looking to capture the main points of a few paragraphs or pages in one or two sentences. In your own words, you highlight what the author said and then explain how it relates to your own ideas.
Maybe you agree with the author, and...
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One question I just received on a different blog was how to handle the 4-star ratings that come up. No matter how good you are, someone will not be satisfied. I personally have received two 4-stars here on WyzAnt, one when I was just starting out, and one just today.
For the 4-star early on, it was from a weekly student who only rated the very first meeting as a 4-star. When I learned it was him (either WyzAnt didn't let us see ratings back when I began or I just hadn't figured out how), I approached him about it at the end of our next meeting. One thing I've learned in life is to ask questions instead, so I simply inquired as to why the first lesson was a 4-star to him. He thought back and couldn't really remember why; the session had gone well to him, and he couldn't remember anything in particular that went wrong; he simply thought that 4-stars was still "good". When I explained to him that it wasn't really how things worked on WyzAnt, how only 5-stars is "good"...
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Many of my students dread conjugating verbs. They dread it even more when the verbs are irregular and have the same meaning!! The verbs
ser and estar both mean
"to be", so what is the difference between the two?? Ser is used to describe things that are permanent or often unchangeable. For example, Yo soy de Estados Unidos.(I am from the United States). The form of ser used in the sentence is soy. You can not change where you are from. Ser is also used to describe characteristics, professions, religions and nationalities.
Estar is used to describe things that are temporary. For example,
Yo estoy en Florida para las vacaciones(I am in Florida for vacation).
I am vacationing in Florida, but I am not from there. There is a little rhyme that is printed in the textbook,
Realidades, which helps you remember when to use the verb, estar. The rhyme goes,
For how you...
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The two rules for rounding numbers are
Round your numbers only once (in one step), and
Round 5's to the nearest even digit -- up or down as needed.
Below I explain why.
In school they usually teach you to round all 5's up to the next digit. For example, 1.45 is rounded to 1.5, 1.65 is rounded to 1.7, 3.225 is rounded to 3.23, etc.
This is wrong because it introduces what we call "systematic error": an error consistently wrong in one direction. In rounding all 5's up, you end up with an average that is too high. ("Random error" goes high or low of the true value randomly, so the average is close to the real value.)
The reason is that 5 is directly in the middle of the digits we round, so we must round it up half the time, and down half the time.
To make this more clear, look at the digits we round to another number: 1, 2, 3, 4 we round down. 6, 7, 8, 9 we round up. (0 we just truncate,...
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Well, okay, it's not incorrect, but it's flawed and by a mathematician's standards: morally wrong.
I'm sure at one point you boringly learned the order of operations. These are the set of rules that tell you whether you should do multiplication before division or addition before subtraction to get the correct answer on your math problem.
1) Parentheses (brackets)
2) Exponents x^x
3) Multiplication 2*2
4) Division 2/2
5) Addition 2+2
6) Subtraction 2-2
7) Get the right answer :)
Except, you don't always get the right answer.
For example: 8-2+1. Is it 5 because 8-3=5? Or is it 7 because 6+1=7?
Is 6/3/3 equal to 2/3 or 6/1?
The issue here is that focusing on the order of operations can lead to ambiguity and obscures the real beauty of mathematics.
A mathematician will tell you that 8-2+1 is actually 8+(-2)+1, which is unambiguously equal to...
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In my experience with elementary level students, I am constantly amazed by these kids imagination. However when it comes to math i find myself frustrated that their minds wander so much. Sometimes i want to just be like, "Super man and unicorns are not a part of math! pay attention!!!!" Reality is, that just doesn't help. I began trying to revamp my ways of teaching so that super man could join us in our lessons. I found that using examples that incorporate the child's imagination works wonders. They being to laugh and enjoy themselves when I am tutoring them and the best part is....THEY PAY ATTENTION! The fun examples also help them to remember math concepts when they go to take their tests. It is a win win for everyone. A basic example could be "superman already saved 4 people last week but this week he saved 5 more people from a burning building! So how many people has he saved?" We have taken a basic 4+5=9 math problem and made it fun for them. Sometimes...
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