I bet that most people would be confused if I told them that we do a lot of writing in math. Most of the time we write in core and calculate numbers in math. We write blog posts about math every Monday. This has really helped me. We have to really understand what we are learning about to write our blog post.
Next year we will have to write a lot more than usual. We will be having to write essays in math. We will be writing summaries about the math skill. Which to me sounds really difficult. I have to do enough writing in all of my other classes and now math too! But this format will replace most of the CST's. I would rather do the CST's than to this kind of writing tests. Blogs have helped me to prepare for this.
We have learned many things this year in math. Some have been hard, and some were easy. I think that the most challenging thing from this year has been surface area and volume. They are both a part of chapter 10, and to me are very challenging.
The biggest thing for me has really be memorizing the formulas. There is like a million for that chapter and i get them all mixed up. Even when I use the right formula I still manage to get the wrong answer. What has really help for me (I sound like a big nerd) but has been going in and getting help for the teacher. For me this helps a lot. You don't have any distractions and the teacher can focus on your problem. Mrs. Moon and eventually got me to understand it ,but it still isn't my strongest area.
- You are probally thinking that science and math have nothing to do with each other . They are taught by different teachers and are at different times of the day. Well you better think again. Sceince is connected with math. You need math to do science.
In many experiments, you need to do some calculations before you do the experiments. After you are done with the experiment you might need to graph your finding to fully see the information that you found during the experiments. You may need math in other subjects besides science, such as drafting or even art.In these ways science and math are truly connected
- We all know what a positive or, regular number is but what about a negative number? Postive numbers on a number line fall on the right side and negative numbers fall on the left. A negative number is less than zero.
Why do you need negative numbers in real life? One why that is very common is when you have a debt. Meaning that you owe money. Lets say that you have a credit card ,and you want to buy a new house. The house cost 20,000 ,but you only have 10,000 in you bank account but you buy the house anyways. At this point you have a negative amount of money in your account- meaning you have less than zero dollars.
- Last Monday I wrote about changing fractions to decimals. This week we are writing about how to change Decimals into fractions. Fractions are really easy and simple to learn. Today I will teach you how to do my favorite way of converting decimals into fractions.
Let's say that you have the decimal .25 ,and you need to have it in fraction form. The first thing that you need to do is remove the decimal point. So you now have the number 25. You now need to put 25 over 100. You need to either have 10, 100, or 1000 as your denominator- It has to be larger. After you would have to divide by 5. So you would have 5/25. Reduce it again and get 1/4. .25 equals 1/4.
Lets say that you have a problem that requres you to convert a fraction into a decimal. I personally like working with decimals better than with frations so it is important that we know how to do this. It is very simple when you know how.
There are many ways that you can do this but for me- the way that I was taught- the simple division problem. Lets say that you have the fraction 1/2 and you need it in the form of a decimal. For me I don't have to do the math for this one because you will eventually memorize them. To convert 1/2 in to a decimal you will have to devide the bottom into the top. At first this might seem a little wierd because the bigger number is in the inside.
Lets imagine that we own a resturant and we have to order food regularly. We always want to find the best deals. We have run out of bread and we have to order 20 loaves of bread. At Billy's Food Supply, you can get 10 loaves for 15 and at Jack's Food you can get 20 loaves for 35$ whict buy would bet better and how would you find this out?
I think that the easiest way is to set up a ratio. So this ration you wuld have to fin the unit rate for each buy. the first one would be 10/15 and the second would be 20/40. You would need to simplyfiy these the first would be 2/3 and the second would be
The slope is the rise over the run. What is the rise? What is the run? The rise is the change from one point to another on the Y axis. The run is the change in the X axis. The slope is usually in the form of a fraction. Lets say that you have the ordered pairs (2,5) and (3,7) what is the slope?
TO find the slope you start on the first pair. (2,5) then you count how much change is in the X axis in this example there is a change of 1. So one goes on the bottom of your fraction. Now you want to find the change in the Y axis which in this example is 2 ,so your fraction is now one over two. That is the slope.
Lets say that you are at the store buying soda. lets also say that you are trying to decide which is the better buy- a six pack of Mountain Dew or a liter. The six pack costs about 3.50 and has 72 ounces of soda and the liter costs 1.59 and has 33 ounces. Which would be the better buy?
First you would have to find the price to the ounce ratio. Then you would have to find the closes amount of soda. Since the liter has a smaller amount of ounces you have to buy at least two liter bottles to be about the same amount of soda as the six pack. If you bought two liters you would have 66 ounces and that would cost 3.10 and then you still would have less soda than in the six pack. I think that the better buy would to get the six pack rather that the liter bottles because even thought it is cheaper to buy two liters you get less soda.
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