Thursday, August 20, 2009

Thursday

6th Grade

Lesson 6 - Fractional parts. Remember, to find 1/2 of a number, divide the number by 2. To find 1/3 of a number, divide it by 3. To find 1/5 of a number, divide the number by 5. The lesson is due tomorrow!


7th Grade

Spelling - Challenge Page. Be sure you are studying for the spelling test tomorrow! The entire unit is due so make sure the whole thing is finished.


Vocabulary - Unit 1 is due on Tuesday. Cards are due Monday. Don't wait until the last minute!


Literature - Today, we finished reading "The Third Wish". There is no homework.


Grammar - Capitalizing Geographic names and names of other things. You are doing Exercise B & C and DWS. pgs. 276-281. Follow the directions!


Math - Lesson 1-3. #2-44 evens. Remember the two rules:


If the signs are the same, add the numbers and keep the same sign. For example:

(-3) + (-7) = -10

(+5) + (+8) = +13 (This is just a basic addition problem!)


If the signs are different, subtract the numbers and use the sign of the bigger number. For example: (-7) + (+5) = -2. Because the signs are different, you would subtract 7-5 and because seven is bigger than five, you use seven's sign to get -2.

Remember how we used the tiles. If it isn't making sense, you could use colored pencils and draw yellow and red squares like I did on the board to help visualize the problems.


8th Grade

Lesson 1-4. #2-20 ALL. Remember, to find the LCM of two numbers, you can use factor trees. For example, if you were to factor the numbers 40 and 70, you would get 2x2x2x5 and 2x5x7. Then you look at both of those and list everything that each has. Since one of them has three 2's, you would write 2x2x2. Then, there is one 5 in both, so add a 5 to that: 2x2x2x5. Then, there is also one 7, so you need a 7: 2x2x2x5x7. Now, you have everything that is listed in both factorizations as least once. Multiply that out to see what the LCM is: 280.

If you have variables with them, you would just make sure to include the variables that are in both. For example: 25xy and 40xyz. First, you would do the numbers just like above: 5x5 and 2x2x2x5 would give you 2x2x2x5x5 = 200. (You included the 5x5 from the first factorization as well as the three 2's from the second. Since you have two 5's, you don't need to add another one.) Now, they both have "xy", but the second also has "z" so you have to have all three. The final LCM is 200xyz. If there were exponents, you would just make sure you write the exponent for each variable that is greater. If x squared is part of one term and x to the fourth is part of the other, you would have to have x to the fourth in the LCM.

I hope this helps!

(Hey, Kendall! Try writing again. I got it to work for me finally.)

See you tomorrow!
Mrs. Swickey