Unit 2 Vocabulary
What is area?
The number of square units that cover a flat shape without gaps or overlaps.
What is one way to find area?
Square tiles, length x width, grid,
PPT Slide 3 - Explain or show how the expression 3 x 5 represents the area of this rectangle in square units
There are 3 rows of 5 squares in the rectangle.
What is a bar graph?
A) A way to show how many in each group or category using the pictures.
B) A way to show how many in each group or category using the length of rectangles
B
16 square units
What is a square foot?
A square with side lengths of 1 foot.
When using tiles to find the area of a shape, what do we need to make sure the tiles do?
No gaps or overlaps
PPT Slide 3 --- Explain or show how the expression
(3 x 2) + (3 x 3) also represents the area of the rectangle.
The rectangle can be divided into 3 rows of 2 and 3 rows of 3 so thats (3 x 2) + (3 x 3)
What is the difference between an expression and an equation?
An expression has at least 2 numbers and one operation
An equation has the same but includes the = sign and the answer
Sing the 6's song!
Sung to Cheerleader: Oh I think that I found a way to count by 6, 12, 18, 24, 30 and 36, 4-2, 48, 54, and then 60, get out of your seat and sing it with me!
What are parentheses ( ) used for?
Symbols that are used to group parts of equations or expressions together.
PPT Slide 1 - Which rectangle has an area of 15?
C and D
PPT Slide 4 - Find the area of the figure. Explain or show your reasoning.
43 square inches
What is a factor?
The numbers you multiply to get a product
Find the value of each expression. Which expression has the greater value?
a) 4 x 8
b) 3 x 10
a) 32
b) 30
A (4x8) has the greater value.
A square with side lengths of 1 meter.
PPT Slide 2 - What is the area of this figure in square units? Explain or show reasoning.
25
PPT Slide 6 - Layla is putting tiles in her bedroom. Each tile is 1 foot by 1 foot.
What are the lengths of the two missing sides?
A = 1 feet
B = 2 feet
What is a product?
The result of multiplying numbers together.
What are 3 things you could measure the area of in this classroom?
(Any flat surface, answers depend)
What is the commutative property?
When two numbers can be added or multiplied in either order
A rectangle has an area of 16 square inches. What could be the length and width of the rectangle?
a) 8 and 8 inches
b) 8 and 2 inches
c) 4 and 5 inches
d) 7 and 9 inches
e) 4 and 4 inches
b and e
PPT Slide 6 How many tiles will Layla need to cover the floor? Explain or show your reasoning.
58 square feet
What is a key used for? Is it used for a picture graph or a bar graph?
A key is the part of a picture graph that tells what each picture represents.
What is it called when you break apart a figure into multiple rectangles?
decompose