How to calculate discounts

Scientific notation for large numbers (8th grade math)

Laws of exponents, part 3: recap of exponent laws (8th grade math / algebra)

Power of a power - exponent law (8th grade/algebra)

More on negative exponents

Laws of exponents 1: product of powers

Zero and one in multiplication

Multiplication as an array (3rd grade math)

Meaning of multiplication: Many times the same group (2nd/3rd grade math)

Volume word problems (7th grade math)

Volume of prisms and cylinders

Comparing fractions: the same kind of parts or the same amount of parts

Regrouping with zero tens, part 2 (3-digit subtraction)

Regrouping with zero tens, part 1 (3-digit subtraction)

How to use rounded numbers to estimate the answer to word problem (3rd grade math)

Rounding two-digit numbers to the nearest ten

How to check addition problems

Write an equation with an unknown for a word problem, part 2

Choose a number sentence with unknown to match a word problem (3rd grade math)

Mental math strategy: use an easier problem

Mental subtraction strategy: use basic subtraction facts

Strategies for mental math: add in parts & use a known fact

Learning about quarters (1st grade math lesson)

Practice problems for making money amounts with cents (1st grade math)

Practice problems with quarters, dimes, nickels, and pennies (1st grade math)