Monday, September 12
1. Write homework in your planner
- Math Boxes 1-7(don't do # 1 or 3)
- Study Link 1-7
2. Today you will need:
- Journal
- Study Link
- Folder
- Notebook
Mental Math
3*7
6*4
8*8
3*9
9*9
Mental Math
4*8
8*3
7*8
8*4
6*7
Mental Math
9*6
8*9
7*6
9*7
6*9
8*7
Which number makes this kind
of array?
Use counters to try and make a rectangular
array with an equal number of rows and
columns for each number 14, 16, and 18.
Answer to Math Message
16
?
16 has can have the same number of rows and
the same number of columns in an array
4 by 4
When an array has the same number of
rows and columns, it is shaped like a square
and is called a square array.
Finding other Square Numbers
Draw an array for number 1
Is the number 1 a square array?
YES
Why is the number 1 a square array?
How many objects are in an array? 1
How many rows are in the array set? 1
How many columns are in the array set? 1
Write the multiplication number model that
represents this array 1 * 1 = 1
Numbers that can be represented by square
arrays are called square numbers.
The first square number is 1. (1 * 1)
The second square number is 4. (2*2)
What is the third square number? 9 (3*3)
?
9
3 by 3 array
What is the value of 3 squared?
2
3 means 3 x 3
3x3=9
2
3 =9
Find The Perfect Square numbers on your Hundreds Chart
What are the next two perfect squares?
2
11 = 11 x 11 = 121
2
12 = 12 x 12 = 144
2
2 = _______
2
3 = _______
2
4 = _______
2
5 = _______
What is the fourth square number?
16?
Draw the array
Investigating the Properties of
Square Numbers
Math Journal Page 20 - independently
Investigating the Properties of
Square Numbers
Math Journal page 21
Exponentatial notation
For square numbers
What is the difference between doubling
a number and squaring a number?
What do you get when you double 10? 20
What do you get when you square 10? 100
What is the number model for doubling 10?
10 + 10 or 10 * 2
What is the number model for squaring 10?
10 * 10 or 10
2
Homework Study Link 1-7
http://resources.oswego.org/games/SplatSquares/splatsq100.html
Play a game of splat! Splat out all the squared numbers on the chart.
e
m
Ga
Multiplication Top it
SRB - pp 333 and 334