How to evaluate an expression using substitution

1.1   Introduction to fractions

1.2   Identifying fraction parts

1.3   Numerator and denominator of a fraction

1.4   Plotting basic fractions on the number line

1.5   Figuring out how much pizza is left

1.6   Exponentiation warmup

1.7   Introduction to exponents

1.8   Exponent example 1

1.9   Exponent example 2

1.10   Raising a number to the 0 and 1st power

1.11   Patterns in raising 1 and -1 to different powers

1.12   Powers of fractions

1.13   Powers of zero

1.14   Decimal place value

1.15   Decimals: writing it out in words

1.16   Decimals: writing it out in words 2

1.17   Decimals: expanding out place value

1.18   Decimals: writing it out as a number

1.19   Decimals: comparing place values

1.20   Decimals: choosing a number to represent place value

1.21   Number sets 1

1.22   Number sets 2

1.23   Number sets 3

1.24   Introduction to ratios

1.25   Ratios as fractions in simplest form

1.26   Simplifying rates and ratios

1.27   Ratio word problem: boys to girls

1.28   Ratio word problem: centimeters to kilometers

1.29   Proportion validity example

1.30   Solving ratio problems with tables example 1

1.31   Solving ratio problems with tables example 2

1.32   Solving ratio problems with graph

1.33   The meaning of percent

1.34   The meaning of percent over 100

1.35   Converting percent to decimal and fraction

1.36   Converting decimals to percents

1.37   Converting decimals to percents example 2

1.38   Converting percents to decimals

1.39   Converting percents to decimals example 2

1.40   Finding a percentage

1.41   Percent word problem example 2

1.42   Percentage of a whole number

1.43   Number sets

1.44   What is a variable?

1.45   Why aren_t we using the multiplication sign?

1.46   How to evaluate an expression with variables

1.48   Evaluating exponential expressions 2

1.49   Expressions with two variables

1.50   Example: Evaluating expressions with 2 variables

1.51   Examples of evaluating variable expressions

1.52   Evaluating an algebraic expression in a word problem

1.53   Introduction to negative exponents

1.54   Thinking more about negative exponents

1.55   More negative exponent intuition

1.56   Products and exponents raised to an exponent properties

1.57   Negative bases and exponents classification example

1.58   Capstone exponent properties example

1.59   Why we do the same thing to both sides of equations

1.60   How to represent a relationship with a simple equation

1.61   Intuition for solving one-step equations

1.62   How to use the one-step equation intuition exercise

1.63   How to solve one-step equations

1.64   How to divide from both sides of an equation

1.65   Solving two-step equations

1.66   Why we do the same thing to both sides: Multi-step equations

1.67   Why we do the same thing to both sides basic systems

1.68   Variables and equations word problem: Putting them to work for Super Yoga

1.69   Variables and equations word problem: Which Super Yoga plan is best?

1.70   Super Yoga plans: Plotting points

1.71   Super Yoga plans: Solving systems by substitution

1.72   Super Yoga plans: Solving systems by elimination