Archive for the 'Rational Numbers' Category

Oct 01 2009

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Ms. Hess

October 1 – Order of Operations

Filed under Rational Numbers

We worked on a worksheet involving solving problems that required using the order of operations to get the answer correct. These were checked during class so the students could continually self correct.

No Homework

Tomorrow – Absolute Value                                                   UNIT TEST NEXT WEEK

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Sep 27 2009

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Ms. Hess

Multiply and Divide Integers

Filed under Rational Numbers

We started Friday with multiplying and dividing integers. The rules are simple: if the signs are the same – it’s positive. If they are different the answer is negative. We learned a song to help remember.notes song mult integers

On Tuesday we will have a quiz over adding, subtracting, multiplying and dividing.  We will practice on Monday reviewing all of these concepts.

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Sep 24 2009

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Ms. Hess

Sept 24 – Subtracting with Integer quiz

Filed under Rational Numbers

Today we reviewed subtracting integers and took our quiz. I hope to post the grades this evening.

We start multiplying and dividing integers tomorrow.

NO HOMEWORK.

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Sep 21 2009

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Ms. Hess

Subtracting Integers – Sept 17…

Filed under Rational Numbers

On Friday the 17th, we reviewed subtracting integers in rotating centers. First we did a warm up to see if we understood the concept. Those that did, we allowed to begin a center. The rest worked problems on the board. Then they went to a center. The classes were shorter due to testing, so centers were mostly introduced.

Centers:

Dice:roll red and green dice. Red is negative and Green is positive. Subtract the numbers they roll.

Spinner: Spin two spinners that have mixed positive and negative numbers. Then subtract the numbers the spinner lands on.

Cards: Using a deck of cards, red are negative and black are positive. Subtract the value of the cards.

On Monday, I was out, and it was a shortened day, so I am unsure whether they were able to do the practice worksheets.

Tuesday – No School :)      Have them play their own games to practice subtracting integers.

Wednesday: Rotating Centers. Practice for Quiz (or possible quiz).

Thursday: Quiz on Subtracting Negative Numbers. Begin multiply and divide negatives.

Friday: Continue multiply and divide with integers practice.

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Sep 17 2009

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Ms. Hess

September 17 – Subtracting Integers

Filed under Rational Numbers

We continued to work on subtracting integers. Based on the warm up, this concept is still being learned.

HW: different from the agenda. Only Practice A worksheet that we started in class.

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Sep 16 2009

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Ms. Hess

September 16 – Subtracting Integers

Filed under Rational Numbers

Today we used a number line to learn how to subtract integers. It is the same as adding negative integers. The only exception is if we are subtracting a negative number. Then it becomes adding a positive. I used the example on the number line of doing a “u-turn” since we have to move to the left to subtract, but then we are still supposed to go to the left for the negative.

Please have them use a number line for the homework. It will make it easier. They can draw one on the paper to use.

3-4 = 3 + -4 = -1          5- (-7) = 5 + (+7) = 12

HW: Worktext page 34

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Sep 15 2009

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Ms. Hess

Sept 15 – Quiz on Adding Integers

Filed under Rational Numbers

Today we reviewed the homework and checked for our errors. Then we took a quiz on adding integers and order of integers.

No Homework. We did not have time to start a new topic because of shortened schedule due to testing.

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Sep 14 2009

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Ms. Hess

September 14 – Adding Integers

Filed under Rational Numbers

Today we used tokens to represent positive and negative numbers. We used these to represent our addition problems. We then worked on a worksheet in class. Most of the errors are when the students add a negative number and a positive. They remember to subtract, but forget to follow the rule on whether the answer is negative or positive. “Different signs, subtract – and keep the sign of the bigger number.”

example:  2 + -7 = -5          -3 + 1 = -2       5 + -6 = -1

HW: Worksheet pg 12    Several students did this in class.

Quiz tomorrow

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Sep 11 2009

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Ms. Hess

September 11 – zero pairs and adding integers

Filed under Rational Numbers

Today we used visuals to show how a positive and negative can add together to become zero. They “cancel each other.” We then see how many are left over from the positive or negative. We reviewed using the number line to also “see” adding positives and negatives. We then began a worksheet involving larger numbers with integers using our rules for adding integers. Everyone was given a bright pink study guide with the rules.

We discussed how the grading system works for this nine weeks. The first standard (data collection – box n whiskers)counts for 49% of their grade. This new standard will count for 49%. That means that even if they had difficulty with the first unit, their grade can still increase as they show how well they can do on the Rational number unit. They were also encouraged to turn in any work that is incomplete. Pinnacle is updated with current grades.

HW: to enjoy the weekend

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Sep 10 2009

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Ms. Hess

September 10 – Adding Integers

Filed under Rational Numbers

Today we began adding negative and positive numbers. We used number lines to help in moving from one number to the next. To the left is negative, and to the right is positive. We also learned the rules for adding with integers. This was set to the tune of “Row,Row, Row Your Boat.”

“Same Signs, add and keep. Different signs subtract. Keep the sign of the larger number, and it will be exact.”

HW: Finish page 34 in worktext

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