## Tuesday, March 15, 2011

## Tuesday, February 22, 2011

### Finding Fair Shares

We are so excited to share with you the closing meeting from our very first fraction lesson this year. Check out the great thinking below!

Fraction Fun from Melissa Ross on Vimeo.

Literature Connection: Here are some suggestions of children's books that contain relevant math ideas about fractions. Look for these books at your local library:

The Doorbell Rang by: Pat Hutchins

Fraction Action by: Loreen Leedy

Eating Fractions by: Bruce McMillan

## Wednesday, January 12, 2011

## Wednesday, December 15, 2010

### Multiplication and Division Strategies

Multiplication and Division Strategies from Melissa Ross on Vimeo.

## Sunday, December 5, 2010

### Arrays Make Math Easy to Visualize

This week in math, we are exploring the use of arrays** **to help us with multiplication and division. It is imperative that students develop strong visual images of multiplication as they develop strategies for solving multiplication problems. If a student can clearly visualize how the numbers they are multiplying are related, they can develop flexible, efficient, and accurate strategies for solving multiplication problems. One way for students to visualize these relationships is through the use of arrays. An **array** is an arrangement of an equal number of items in rows and columns. Arrays can helpful when solving more “difficult” multiplication situations. Being able to visualize how to break multiplication problems into parts becomes even more important as students solve multi-digit problems in Grades 4 and 5.

**product**. (In case you have forgotten, a product is the answer to a multiplication problem.)

Another way students can help lay a strong foundation for multiplication is to practice skip counting by multiples of numbers 2-12. The goal is for students to be able to skip count fluently (within 3 seconds) from one multiple to the next.This task can be practiced at home, between commercial breaks, or even in the car. Being able to skip count fluently will undoubtedly help students in their work with multiplication and division. Check out this website that helps with skip counting.

Thank you to our guest author this week, Miss Russell. :)

## Thursday, November 25, 2010

### Comparing Arrays

**composite number.**You probably noticed that 17 only has two arrays. This is because 17 is a

**prime number.**Any number that has only two factors, one and itself, is a prime number. The factors of 17 are 17 and 1.

**square number.**(ex: 3x3=9 Nine is a square number. 5x5=25 Twenty-five is a square number.) Sometimes math vocabulary can be confusing! For a reminder of the meaning of some math words that you may have forgotten, visit this great online math dictionary.