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- The word integer comes from the Latin word for "untouched."
- Integers include all zero, all positive numbers (1, 2, 3, etc.) and negative numbers (-1, -2, -3, etc.).
- Integers can be traced back to Babylonian times (almost 4,000 years ago).
- Integers were introduced in 1563 by Abermouth Holst. He was conducting experiments with bunnies and elephants and realized he needed a way to keep track of the bunnies (they kept growing in numbers). He spent 15 years working on developing the number system.
- In 1890 Japanese mathematicians developed the system of integers (However zero was not included).
- Zero had been developed by early Babylonians, Mayans and Indians. It is believed the Indians were the first to "officially" recognize zero and use it in mathematical formulas and equations.
- Before the introduction of zero, mathematicians used black spaces in equations. The black space represented "nothing being there."
- Negative numbers were adopted into the number system in 1800's.
- Before integers, people used rocks, sticks and even their fingers to count. Some things never change.
Students go to SECTION 1.
Source: http://463431396329892656.weebly.com/history-of-integers.html

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"Addition and Subtracting Positive Integers Worksheets." Super Teacher Worksheets - Thousands of Printable Activities. N.p., n.d. Web. 20 Sept. 2016.
Giraffe, Miss. "First Grade Math Unit 7." Teachers Pay Teachers. TeachersPayTeachers.com, 2014. Web. 01 Oct. 2016.
"History of Integers." Integers. N.p., n.d. Web. 15 Sept. 2016.
"I'm DONE, a New Math Station and a Freebie." Teach With Laughter:. N.p., 10 June 2013. Web. 02 Oct. 2016.
"K-2 Mathematics." Arizonas College and Career Ready Standards. N.p., n.d. Web. 20 Sept. 2016.
Lobello, Karen. "How We Can Help First Grade Students Understand Addition & Subtraction." Our Everyday Life. N.p., n.d. Web. 15 Sept. 2016.
"Understanding Number Sense." Math Solutions. N.p., n.d. Web. 18 Sept. 2016.
"Using Manipulatives." TeacherVision. N.p., n.d. Web. 18 Sept. 2016.

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Parents: Math (as well as the other sujbects your child will learn) is a very important subject, not only because of testing, but it supports critical life skills for all children. The exercises in this lesson support not only state standards, but fundamental concepts that will help your child as they get older and develop critical thinking skills. I am including a few links that I think you will find usefull in understanding the importance of learning mathematical concepts. Remember, together we will prepare the children for the future!
http://mathsolutions.com/making-sense-of-math/number-sense/understanding-number-sense/
http://oureverydaylife.com/can-first-grade-students-understand-addition-subtraction-11887.html
https://www.teachervision.com/pro-dev/teaching-methods/48934.html

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Class you all did great work! You worked hard and made it to the end! Here is your certificate for a job well done!

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This is the last section for the lesson. You have one minute to do as many problems as you can. So get your pencils and erasers ready to go!
Parents time your child for one minute, no counters this time.
I will time you in class as well. Get Ready, Get Set...GO!!!

Source: www.superteacherworksheets.com

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You all did a great job in Section 2! Now for the Math Mad Minute! Go to SECTION 3.

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WOW!!! What a great job you did in Section 1. You can now move on to SECTION 2.

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Hi  students, parents. In this section we will be working with adding and subtracting integers. We will positively have a GREAT time!
Students go to History of Integers.

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In this section you have to really put on your thinking caps.  You will have to be extra careful, pay attention so you don't get confused solving the problems. Follow the instructions on the practice sheet. I know you will do great!
You will need your pencils, eraser, and counters.
Source: https://www.teacherspayteachers.com/Product/First-Grade-Math-Unit-7-1066638

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Class, here you will work on addition and subtraction of positive integers. Click on the worksheet below to open it. Follow the instructions on the work sheet. You can use your counters to help solve the problems. You can do it!
You will need your pencils, erasers, and counters.

Source: http://teachwithlaughter.blogspot.ca/2013/06/im-done-new-math-station-and-freebie.html

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I encourage you to work together with your child at home. Together we will strengthen their skills and encourage them to do their very best! The work is not hard so do not be affraid. You can always reach out to me for help. I am including a link to the AZ Standards homepage where you can access all of the materials you will need to help you with your students learning experience. Source: http://www.azed.gov/azccrs/mathstandards/k-2/

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Arizona’s College and Careers Ready Standards, 1st Grade Math

“What’s missing?” and “True or False” Exercises

Operations and Algebraic Thinking (1.OA.A.1)

- Represent and solve problems involving addition and subtraction.

- Understand and apply properties of operations and the
relationship between addition and subtraction.

- Add and subtract within 20.

- Work with addition and subtraction equations.

True or False Exercise (including the above 4 standards)
Mathematical Practices (1.MP.1)

- Make sense of problems and persevere in solving them.

Source: http://www.azed.gov/azccrs/mathstandards/k-2/