06:10

Volume of spheres (8th grade math)

06:15

Volume of pyramids and cones (8th grade math)

07:18

Volume of prisms and cylinders (8th grade math)

08:49

Angles in similar triangles (8th grade math)

04:58

Exterior angles of a triangle plus unknown angle problems (8th grade math)

04:17

The angle sum of a triangle - proof and exercises (8th grade math)

02:26

Alternate interior angles and alternate exterior angles (8th grade math)

03:09

Corresponding angles (8th grade math)

07:24

Review of basic angle relationships (7th/8th grade math)

09:14

Similar figures: scale factor and scale ratio, how to set up proportions

06:02

Equivalent fractions visually (3rd grade math)

06:02

Understanding fractions (3rd grade math)

07:29

Multiplying by multiples of ten (3rd grade math)

05:51

Similar figures, part 1 (8th grade math)

08:58

Polygons (3rd grade math)

08:42

Word problems with four-digit numbers (3rd-4th grade math)

07:36

Dividing evenly into groups - sharing divisions (3rd grade math)

07:06

Comparing four-digit numbers (3rd / 4th grade math)

07:21

Subtract four-digit numbers with regrouping (3rd-4th grade math)

01:26

Add four-digit numbers in columns

04:18

Dilations in the coordinate grid (8th grade math)

05:17

Geometric transformations: the basics of dilations (8th grade math)

05:12

Translations in the coordinate grid (8th grade math)

03:13

Translations and reflections (8th grade math)

06:30

Sequences of geometric transformations (8th grade math)

04:08

Reflections in the coordinate grid (8th grade math)

03:46

Geometric transformations and congruence, part 2

05:41

Rotations in the coordinate grid (8th grade math)

08:48

Geometric transformations and congruence, part 1

05:17

How to use mental math to figure out change

03:33

How to count up to make change (3rd-4th grade math lesson)

06:38

Scientific notation: small numbers (8th grade math)

07:20

Using scientific notation in calculations, part 2 (8th grade math)

06:20

Using scientific notation in calculations, part 1 (8th grade math)

05:04

Finding the total and the change (3rd-4th grade math)

04:04

Using mental math to solve money problems (3rd-4th grade math)

11:21

Significant digits - introduction and usage

05:57

Classifying quadrilaterals, part 2

06:56

Classifying quadrilaterals, part 1 (5th grade math)

08:08

What are polygons and regular polygons? (5th grade math)

07:15

Review of basic angle concepts for 5th grade math

06:06

Scientific notation for large numbers (8th grade math)

05:50

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

04:21

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

05:33

More on negative exponents

09:04

Zero and negative exponents (8th grade/algebra lesson)

04:54

Using a number line to find elapsed time (3rd grade math)

04:11

Elapsed time: time intervals to the minute (3rd grade math)

05:36

Using till and after in telling time (3rd grade math)

06:39

Partial products or how to break a multiplication problem into two (3rd grade math)

06:43

Powers with negative bases (exponents are positive; 8th grade math)

06:04

Laws of exponents 1: product of powers

03:40

Zero and one in multiplication

04:21

Order of operations - multiplication, addition, subtraction (3rd grade math)

04:29

Multiplication as an array (3rd grade math)

04:27

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

04:27

Volume word problems (7th grade math)

04:18

Volume of prisms and cylinders

01:42

Surface area word problem: Cover a box with wrapping paper

03:40

Surface area word problem: Painting a water tank