Double Digit Multiplication!!!!

                              2 X 8

                      4 X 8
                     10 X 8
                     40 X 8
                     42 X 8
How can you solve these cluster problems?  Turn with your close neighbors and share how you could solve each problem. Work on your dry erase board to show how you solved this cluster. Are there any multiplication pairs that help you?  Do you need to use a strategy such as skip counting?  Do you "just know" the facts that can help you? 

Take a look at the problem 42 X 8.  Which of the problems in this cluster helped you figure out the solution to this problem?  Were there other problems that were not included in this cluster that might have helped you with the solution to 42 X 8?

Let's try another one!

       3 X 7
     5 X 7
    10 X 7
    50 X 7
    53 X 7
Try this cluster by yourself on your paper.  Write about how you solved each problem.

          74 X 6
What cluster of problems could help you solve this multiplication expression?

Now let me show you the traditional way to solve this problem.

                                              74

                    X   6

Why is it important for us to know more than one way to solve a problem?

                  

How Many People in a Family?

Today you are going to learn to:

*define the way data will be collected
*make quick sketches of data
*describe the shape of data
*summarize what is typical of data

I called City Hall today and asked Mayor Clifton what the typical family size is in Nixa.  He told me the typical size family is about 3.  What do you think he means by that?

Do you think the typical size for our class might be the same as it is for our town?

Let's take a look at the data for our class.  If we're going to study family size for this class, how would we count who is in a family?

Today you are going to use snap cubes to build a tower to represent your family, one cube per family member.  Then we will arrange the towers in a sequence and then make a line plot of the data.  Will this data be quantitative or qualitative? 

What did you notice about our data?  What did you choose for a typical family size?  Why?

How would you compare our data to other classes in our school?  Are there some types of families that are not represented in our data?  How do we compare to the rest of Nixa?

Now we will work in our math stations.  Please listen to the directions of where you will be working today.

Arrays and Shares

Today we are going to be finding factors of numbers, recognizing prime numbers, using an array as a model for multiplication. 

When a group of people need to sit down, we often arrange chairs in an array that fits the space.  Can you think of some places this might happen?

How could we arrange chairs in a rectangular array for a group of 18 people? What other ways could you arrange them?  You will work with a partner and cubes to make all the arrays you can for 18.  You will choose one array to share with the class on the SmartBoard.

How can you count the squares in the array?  Turn to your shoulder partner and share your ideas.

Now you will work with your partner again!  I am going to give you a number and you are going to find all the possible arrays for that number.  You will work in Microsoft Word.  Save your poster in the math folder.   If you finish early, come up for another number to work on.  I will print them and hang them in our room.  We will take a gallery walk tomorrow.

Place Value, It's All About the Numbers!

Here are some great websites to help you learn about place value.
Fun Brain Place Value
Place Value Game
Number Sense Puzzle
One False Move Game
Toon University Place Value
Spell the Number Game
Remember, place value is all about the number!