This lesson introduces the concept of absolute value as the distance of the number from zero. [Developmental Math playlist: Lesson 128 of 196]
This lesson shows the importance of lining up the decimals when adding decimals. [Developmental Math playlist: Lesson 86 of 196]
This lesson shows how to add different units for weight by converting them to a common unit. [Developmental Math playlist: Lesson 114 of 196]
This lesson shows how to add different units of length by converting the measurements to a common unit of measurement. [Developmental Math playlist: Lesson 111 of 196]
This lesson uses a number line to demonstrate adding fractions with different signs. [Developmental Math playlist: Lesson 137 of 196]
This lesson shows how easy it is to add fractions with similar denominators. [Developmental Math playlist: Lesson 67 of 196]
This lesson reviews how to create fractions with like denominators so that they can be added. [Developmental Math playlist: Lesson 70 of 196]
This lesson uses a number line to clarify how to add integers with different signs. [Developmental Math playlist: Lesson 135 of 196]
This lesson presents strategies for adding mixed numbers with like denominators. [Developmental Math playlist: Lesson 71 of 196]
This lesson presents word problems that require adding mixed numbers. [Developmental Math playlist: Lesson 73 of 196]
This lesson shows how to add mixed numbers that have different denominators.[Developmental Math playlist: Lesson 72 of 196]
This lesson reviews absolute value and uses a number line to show what happens when negative numbers are added. [Developmental Math playlist: Lesson 134 of 196]
This lesson uses a number line for adding numbers with different signs. [Developmental Math playlist: Lesson 136 of 196]
This lesson begins a 4 lesson review about adding whole numbers, carrying in addition, and place value. [Developmental Math playlist: Lesson 10 of 196]
This is the second lesson that reviews the addition of whole numbers, carrying in addition, and place value. [Developmental Math playlist: Lesson 11 of 196]
This is the fourth lesson that reviews the addition of whole numbers, carrying in addition, and place value. [Developmental Math playlist: Lesson 12 of 196]
This is the fourth lesson that reviews the addition of whole numbers, carrying in addition, and place value.[[Developmental Math playlist: Lesson 13 of 196]
This lesson presents the concept of subtraction as exactly the same as adding the negative of a real number. [Developmental Math playlist: Lesson 141 of 196]
This lesson solves word problems on a number line to demonstrate adding and subtracting real numbers that represent temperature change. [Developmental Math playlist: Lesson 141 of 196]
This lesson solves a word problem that involves weight in different units. Also discussed is the importance of knowing that a ton is 2000 pounds for reference. [Developmental Math playlist: Lesson 115 of 196]
