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# Take Notes

What’s arithmetic?  Here’s the complete answer—as it exists in one good source at present. (It will be different later.)

It’s an answer neither Sam nor Jessica’s mom could possibly have provided.

What’s arithmetic?  Here’s the complete answer—as it exists in one good source at present. (It will be different later.)

It’s an answer neither Sam nor Jessica’s mom could possibly have provided.

Here is the first paragraph from Wikipedia’s article, “Arithmetic”:

Arithmetic or arithmetics (from the Greek ἀριθμός arithmos, “number”) is the oldest and most elementary branch of mathematics. It consists of the study of numbers, especially the properties of the traditional operations between them — addition, subtraction, multiplication and division. Arithmetic is an elementary part of number theory, and number theory is considered to be one of the top-level divisions of modern mathematics, along with algebra, geometry, and analysis. The terms arithmetic and higher arithmetic were used until the beginning of the 20th century as synonyms for number theory and are, sometimes, still used to refer to a wider part of number theory. (http://en.wikipedia.org/wiki/Arithmetic

Here is the definition from the Oxford English Dictionary:

The science of numbers; the art of computation by figures. (This dictionary also tells us that the first occurrence of the word “arithmetic” in written English took place in the year 1305!) http://public.oed.com/about/free-oed/ https://en.wiktionary.org/wiki/arithmetic#:~:text=Used%20in%20English%20since%2013th%20century

### TAKE NOTES

• How well did these definitions fit with the understanding of “arithmetic” you had before you read them?
• What was useful?
• What do you think about the fact that arithmetic has been used for thousands of years?

Then, either alone, or with an interested friend or co-worker, create a description of “arithmetic” in just two sentences that you could share with one of your students.  Remember: you’re creating this description to help a child get some idea of what arithmetic is! If you are working in a group, discuss your descriptions.

Some of the interesting things to talk about might be:

• What is it about the child you’re thinking of that influenced what you wrote?
• What do you want the child to take away from what you say about arithmetic?
• How does your description differ from the two descriptions listed above?

#### Module: Helping Students Do Math

• Unit 1: What is Math?
• Unit 2: Experiences with and Attitudes Toward Math
• Unit 3: Math Instruction: The Big Picture
• Unit 4: Learning from a Math Textbook
• Unit 5: Math and Technology
• Unit 6: Asking Questions That Help Students Think
• Unit 7: Problem Solving
• Unit 8: Math and the Common Core
• Unit 9: Number Sense (Math Facts, Memorization, and Practice)
• Unit 10: Visual Math
• Unit 11: Putting it All Together for Paraprofessionals
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