Enjoy learning math -- or learning HOW to teach math! I always emphasize conceptual understanding & number sense, because I feel that is how students learn math best. Check out also the accompanying Math Mammoth books at my site www.mathmammoth.com.

Significant digits - introduction and usage
11:21
Significant digits - introduction and usage
Classifying quadrilaterals, part 2
5:57
Classifying quadrilaterals, part 2
Classifying quadrilaterals, part 1 (5th grade math)
6:56
Classifying quadrilaterals, part 1 (5th grade math)
What are polygons and regular polygons? (5th grade math)
8:08
What are polygons and regular polygons? (5th grade math)
Review of basic angle concepts for 5th grade math
7:15
Review of basic angle concepts for 5th grade math
Scientific notation for large numbers (8th grade math)
6:06
Scientific notation for large numbers (8th grade math)
Laws of exponents, part 3: recap of exponent laws (8th grade math / algebra)
5:50
Laws of exponents, part 3: recap of exponent laws (8th grade math / algebra)
Power of a power - exponent law (8th grade/algebra)
4:21
Power of a power - exponent law (8th grade/algebra)
More on negative exponents
5:33
More on negative exponents
Zero and negative exponents (8th grade/algebra lesson)
9:04
Zero and negative exponents (8th grade/algebra lesson)
Using a number line to find elapsed time (3rd grade math)
4:54
Using a number line to find elapsed time (3rd grade math)
Elapsed time: time intervals to the minute (3rd grade math)
4:11
Elapsed time: time intervals to the minute (3rd grade math)
Using till and after in telling time (3rd grade math)
5:36
Using till and after in telling time (3rd grade math)
Partial products or how to break a multiplication problem into two (3rd grade math)
6:39
Partial products or how to break a multiplication problem into two (3rd grade math)
Powers with negative bases (exponents are positive; 8th grade math)
6:43
Powers with negative bases (exponents are positive; 8th grade math)
Laws of exponents 1: product of powers
6:04
Laws of exponents 1: product of powers
Zero and one in multiplication
3:40
Zero and one in multiplication
Order of operations - multiplication, addition, subtraction (3rd grade math)
4:21
Order of operations - multiplication, addition, subtraction (3rd grade math)
Multiplication as an array (3rd grade math)
4:29
Multiplication as an array (3rd grade math)
Meaning of multiplication: Many times the same group (2nd/3rd grade math)
4:27
Meaning of multiplication: Many times the same group (2nd/3rd grade math)
Volume word problems (7th grade math)
4:27
Volume word problems (7th grade math)
Volume of prisms and cylinders
4:18
Volume of prisms and cylinders
Surface area word problem: Cover a box with wrapping paper
1:42
Surface area word problem: Cover a box with wrapping paper
Surface area word problem: Painting a water tank
3:40
Surface area word problem: Painting a water tank
Surface area basics: tetrahedron and prism
3:59
Surface area basics: tetrahedron and prism
Comparing fractions: generic practice (3rd grade math)
4:00
Comparing fractions: generic practice (3rd grade math)
Comparing fractions: the same kind of parts or the same amount of parts
5:22
Comparing fractions: the same kind of parts or the same amount of parts
Comparing fractions: are the wholes the same size?
3:26
Comparing fractions: are the wholes the same size?
Regrouping with zero tens, part 2 (3-digit subtraction)
2:57
Regrouping with zero tens, part 2 (3-digit subtraction)
Regrouping with zero tens, part 1 (3-digit subtraction)
4:02
Regrouping with zero tens, part 1 (3-digit subtraction)