Vocabulary 6 Lesson

Vocabulary 6 Lesson

by Christine Kovacs

​What does round mean in math?

• ​Actually, there is more than one definition!

• ​It could be used to describe shapes. Circles are round.

• ​That's awesome, but we are not talking about that definition today.

• ​Speaking of circles, this number on the right is pi. We use it to find the area of, and distance around a circle. It goes on forever, literally forever. In order to use it, we need to round it.

Poll

So, what does round mean?

• Your belly after Thanksgiving dinner.

• The process of replacing a number by another number of approximately the same value but having fewer digits.

• Not approximated in any way; precise.

• A process in which you determine if one number is equal, smaller or bigger than the other number.

​Round

​The process of replacing a number by another number of approximately the same value but having fewer digits.

​Here are some number lines that go in different directions. The one that goes up and down can help us understand how to round.  How would you describe it? 

Poll

What does vertical mean?

• In an up-down direction or position

• in a side to side position

• a point where two or more line segments meet

• the color green

​vertical

​In an up-down direction or position

​Decomposition

​Remember decomposers? What do they do? They break down all the dead things in nature! Using what we already know to figure out what we don't know can be VERY helpful!

Poll

In math, what does decomposition mean?

• draw as a logical conclusion

• subtract or take away (an amount or part) from a total

• to add all the numbers together

• to break down numbers into parts

​decomposition

​to break down numbers into parts

​Midpoint

​Okay, use what you know... middle, midnight, midpoint. Look at the number line below. Which number do you think is the midpoint?

Poll

Midpoint means...

• precisely half way between two numbers

• the point to the right of the decimal

• the numbers at the end points on a number line

• The point on a number line closest to the 

​midpoint

​precisely half way between two numbers

​What is an endpoint? Well, a picture is worth a thousand words, right?

Poll

So, which one describes what an endpoint is?

• the numbers at the ends of the number line

• the number you write after the = sign

• the point in the middle of the number line

• when the teacher cancels recess because everyone is too loud

​An endpoint is...

​the numbers at the ends of the number line.

​

​That's it-easy!!

​​I've heard of minimum wage.

​

​I've heard of the bare minimum.

​

What about minimum coverage?

Poll

What does minimum mean?

• tiny, little answers

• the greatest common factor

• the least or smallest amount or quantity possible

• as great, high, or intense as possible or permitted.

​Minimum is...

​

the least or smallest amount or quantity possible

​

​So, don't just give minimum effort in math class!

​Let's flip the switch:

​maximum

​take it to the max

​maximum speed

​maximum capacity

​maxed out

Poll

What does maximum mean?

• as great, high, or intense as possible or permitted

• the least or smallest amount or quantity possible

• the dog on The Little Mermaid

• where you stream all the shows on HBO

​Maximum means:

​as great, high, or intense as possible or permitted

​

​This is the kind of effort we want to see in math class!

Poll

What does demonstrate mean?

• when the demons come strate to you at Halloween

• describe or explain by examples

• to pay attention carefully when the teacher explains something

• when you forget to show your work

Poll

What does describe mean?

• depict in words, tell in your own words

• copy the answer straight from Wikipedia

• when you forget to show your work

• when you tell your friend how much you like their haircut

Poll

What does approximation mean?

• a word problem where you can add or

• when the answer is a very long number

• an exact amount

• anything that is similar, but not exactly equal, to something else

​Approximation is:

​anything that is similar, but not exactly equal, to something else