slideshow

1. Warm Up

2. Vocabulary
Variables Solve One-step equation
Distributive property Solution term
Like terms infinitely many solutions
Algebraic expression inverse operation two-step equations
constants no solution unique solution coefficients
Linear equations in one variable
Addition property of Equality additive inverse
Cube root Decimal expansion exponent
Exponential notation irrational
Multiplication Property of Equality multiplicative inverses
perfect square radical rational scientific notation
significant digits Square Root

3. Learning Targets
EQ: What vocabulary words will we learn during
Unit 2?
Today I will receive vocabulary words and
definitions for Unit 2 because this will allow me to
speak and understand the language of the
standards.
I can:
Define one vocabulary word using my own terms.

4. Variable: A letter or
symbol used to
represent a number.
Define
Memory Cue
X + 3= 10

5. Define
Solve: Identify the value
that when substituted
for the variable makes
the equation a
true statement.
Memory Cue
X + 6 = 16
- 6 - 6
x = 10

6. Define
One Step equation:
equations that can be
solved in one step
Memory Cue
x + 3= 10
-3 = -3
x = 7

7. Define
Two Step equation:
equations that can be
solved in two steps
Memory Cue
7x + 3= 10
- 3 = -3
7x = 7
7 7
x = 1

8. Define
Distributive Property:
The distributive property
lets you multiply a sum
by multiplying each
addend separately and
then add the products
Memory Cue

9. Term: Parts of an
expression or
equation separated
by +, =, or – signs
Define
Memory Cue
3x + 6x – 2 = 75

10. Define
Solution - the set of all
values which, when
substituted for
unknowns, make an
equation true.
Memory Cue
x2 = 16
x= 4 or x=-4

11. Define
Like Terms: Monomials
that have the same
variable raised to the
same power. Only
the coefficients of like
terms can be different.
Memory Cue
3x + 6x – 2 = 75

12. Infinitely many
solutions: This occurs
when expressions on
both sides of the
equation are the
same.
Define
Memory Cue
-18a + 3 = 3 – 18a

13. Define
Algebraic Expression: A
mathematical phrase involving
at least one variable.
Expressions can contain
numbers and operation
symbols.
Memory Cue
4x+10

14. Inverse Operation: Pairs of
operations that undo each
other, for example, addition
and subtraction are inverse
operations and multiplication
and division are inverse
operations.
Define
Memory Cue
+6
-6
0
3x
3

15. Define
Constant- a number on
its own
Memory Cue
4x+10

16. No solution: an
equation in which the
variable will cancel out
and the constants are
not equal
Define
Memory Cue
-7x + 7 = 19 – 7x

17. Unique solution: an
equation in which the
variable will not cancel
out and the constants
are not equal
Define
Memory Cue
6x + 9 = 19 – 7x

18. Define
Coefficient: A number
used to multiply a
variable.
Memory Cue
8x

19. Linear Equation in One
Variable: An equation
that can be written in
the form
ax + b = c where a, b,
and c are real numbers
and a ≠ 0
Define
Memory Cue
6x + 9 = 19 – 7x

20. Define
Addition Property of Equality:
For real numbers a, b, and c, if a = b,
then a + c = b + c.
In other words, adding the same
number to each side of an equation
produces an
equivalent equation.
Memory Cue
x + 19 = 19 + x

21. Additive Inverses: Two
numbers whose sum is 0
are additive inverses of
one another.
Define
Memory Cue
3/4 and – 3/4 are
additive inverses of one
another because 3/4 +
(– 3/4) =
(– 3/4) + 3/4 = 0.

22. Define
Exponent: The number of
times a base is used as a
factor of repeated
multiplication.
Memory Cue
x2

23. Define
Memory Cue
2
휋
8.9876098………………
Irrational: A real number
whose decimal form is
non-terminating and non-repeating
that cannot be written as
the ratio of two integers

24. Define
Memory Cue
16
1/2
8.98989898…
8
Rational: A number that
can be written as the ratio
of two integers with a
nonzero
denominator.

25. Define
Memory Cue
5.86 x 10
Scientific Notation: A
representation of real numbers
as the product of a number
between 1 and 10 and a power
of 10, used primarily for very
large or very small
numbers.

26. Define
Perfect Square: A number that
has a rational number as its
square root.
Memory Cue
16 100
-9 36

27. Define
Square Root: One of two
equal factors of a
nonnegative number.
Memory Cue
For example, 5 is a
square root of 25 because 5 • 5 = 25.
Another square root of 25 is -5
because
(-5) • (-5) = 25.
The +5 is called the principle square
root of 25 and is always
assumed when the radical symbol (√)
is used.

28. CLICK LINK FOR VOCABULARY
ACTIVITIES
http://www.cobblearning.net/8thgrademathconnections/vocabulary-activity/