Sixth Grade
Today, we practiced writing numbers in expanded notation with exponents a little more and then the class showed me that they are pretty good at rounding! The homework is more rounding practice. On the worksheet, it has a number on the left and two blanks to the right. At the top of the page it tells you to round to the 10's and then to the 100's. First, round the number on the left to the 10's and put that in the first blank. Then, round the number to the 100's and put that in the second blank. You will do the same thing for the bottom except round to 1,000's and 10,000's. Here is an example:
Round to the tens' place Round to the hundreds place
1. 672 670 700
First, the number in the tens place is a 7. The number to the right is a 2 and a 2 doesn't make it go up, so we round to 670. Then, to round the hundreds, you see that the 6 is in the hundreds place. The 7 is to the right of the 6 and a 7 makes it round up 1, so you round to 700.
As always, send me an email if you have questions!
Seventh Grade
Math - Today, the class learned how to write numbers in scientific notation. Remember, the point is to write really big numbers more efficiently (quickly and without taking up much space on the paper). Here are a few examples:
The key is to first put a decimal after the first digit (this will make your number between 1 and 10). It can't be 10 or bigger and it must be at least 1. Then, you will always write "times 10" to some exponent. You know what the exponent is by counting the number of places the decimal moved. That is shown with the arrows above. In the first example, the decimal moved 6 places and in the second example, it moved 7 places.
Do #1-10 only on the worksheet I passed out this afternoon. We will discuss how to do the second half tomorrow.
Geography - We read Chapter 1, Section 3 today. Define and identify the words and people from the Section Assessment. Then, finish the Atlas Activity worksheet "Getting To Know Your Atlas" 1A and 1B.
Eighth Grade
Pre-Algebra
Today, we continued working on scientific notation. Most of the class completed another handout practicing the skill in class. Then, we did some mental math exercises and took notes on how to multiply in scientific notation.
Algebra I
We went over how to multiply in scientific notation some more and then took notes on dividing in scientific notation. Finish the back side of the worksheet from yesterday as well as the 5 extra multiplying problems I wrote on the board today. I didn't bring home the MimioPad today so I can't make up any examples. I'm sorry! Remember that to divide in scientific notation, you first divide the base numbers. Then SUBTRACT the exponents - top - bottom. Pay attention to the signs. Then, check to see if the new base number is between 1 and 10. If not, you will need to move the decimal over one place to the right. That's a -1 in exponents, so add -1 to the exponent and you are done.
Email me if you have any questions!
See you tomorrow,
Mrs. Swickey
