Nonstop Number Fun!

Mrs. Ranney's new class has been exploring number sense!

The symbols 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9 are digits.

The even digits are 0, 2, 4, 6, and 8.

The odd digits are 1, 3, 5, 7, and 9.

Standard form: A way of writing numbers using digits


Expanded form: A way to write numbers by showing the VALUE  of each digit


Word form:  A way to write numbers using words


To practice with forms of a number, we found that we could use 
the Clustr Map on our Blog!

We have had 25,968 visitors to the blog since October 2009. 
We showed that number in all three forms!

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We have reviewed skills with the hundred chart and odd and even digits by playing some games!

To practice with the hundred chart, several students played

Digital Dog Bone!

Other students played manual Dog Bone!

Many students played Odd and Even with a partner.

The object of this game of strategy is to get 5 in a row, 
vertically, horizontally, or diagonally.

A player who rolls an even number on the number cube 
must cover any even number on the board.

A player who rolls an odd number on the number cube 
must cover any odd number on the board.

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Have you played Dog Bone? If so, how many bones could you place in one minute? 

Which numbers are easy to place and why?

What are some strategies you use to place your number quickly?

Mathletics Marvels - Exciting Update!

Our school is using Mathletics on a free trial basis until June 12th, 

the last day of school.

It is a great site for practicing the 3rd grade standards and for competing against

 students all over the world!

We were so excited that our class recently achieved 

a place in the Top 50 Classes

 in the U. S. A.

This morning we were even more excited and astonished that we made it to
30th place out of 50!

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Have you been using Mathletics?

What have you worked on?

What certificates have you received?

Remarkable Round Numbers!

 This week, Mrs. Ranney's class has been working very hard at learning to round numbers!

 

 Here are some basic rules to help you remember what to do:

 

 

How to Round Numbers

• Decide which two round numbers the number you are working with is between
• Choose the lower number if the digit next door to the place you are rounding is less than 5
• If the digit next door is 5 or more, round up!

Example: Round 74 to the nearest 10

• 74 is between 70 and 80
• The digit next door to the tens place is 4, so round down to 70

Answer: 70
(74 gets "rounded down")

Example: Round 86 to the nearest 10

• 86 is between 80 and 90
• The digit next door to the tens place is 6, so round up to 90

Answer: 90
(86 gets "rounded up")

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Watch the slide show and try the quiz to practice 
your rounding skills!

Rounding Numbers! on PhotoPeach

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How did you do on the rounding quiz?

How about asking a rounding question in your comment?

Once others write comments, look for question you can answer!