Counting Numbers 1  10Grade: K  2 Preschool math lesson  Practice counting to 10. 1:10 

Let's Count to 30!Grade: K  2 Preschool math lesson  Practice counting to 30. 1:15 

The Number LineGrade: K  2 The lesson explains all about the number line. Number lines are a way of visualizing numbers. 2:00 

Even and Odd NumbersGrade: K  2 The math lesson shows how to determine if a number is even or odd, and what you can do with even and odd numbers. 2:15 

Whole Numbers  An IntroductionGrade: K  2 An Introduction to whole numbers. Whole numbers are numbers that you can count with and include zero. Whole numbers must be positive and cannot be represented like a fraction or decimal. 1:50 

Whole Numbers and Place ValueGrade: K  5 The math lesson explains whole numbers and place values. When looking at a number, locate the ones position, tenths position and hundreds position. The position of the digit affects the value of the number. 2:30 

Expanded FormGrade: K  5 The math lesson explains how writing a number in expanded form can be used as another way of determining the value of that number. 2:40 

Prime and Composite NumbersGrade: 2  6 The math video shows the difference between prime and composite numbers, and a test to see which groups any number belongs to. 2:55 

What are Fractions?Grade: 2  6 Introduction to fractions. The lesson shows how to find the numerator and denominator. 5:15 

Fractions as Parts of a WholeGrade: 2  6 The lesson explains fractions as parts of a whole number. 2:05 

Decimals  An IntroductionGrade: 3  6 Introduction to the concept of using decimals. A decimal is any number that contains a decimal point and a value before or after it. Decimals are related to powers of ten, fractions and percentages and are very useful for the numbering system. 1:50 

Prime NumbersGrade: 3  6 Learn how to identify prime numbers. 8:15 

Number SetsGrade: 3  6 Learn about Number Sets in this lesson. 5:15 

Negative NumbersGrade: 3  6 The math lesson provides an introduction to negative numbers. 9:40 

Binary, Decimal and Hexadecimal Number SystemsGrade: 5  8 Conceptualizing different number systems  binary, decimal, hexadecimal. 11:30 

Rational and Irrational NumbersGrade: 5  8 Learn to identify, order, and graph rational and irrational numbers. 6:00 

Complex Numbers, part 1Grade: 5  8 The math lesson introduces complex numbers, and explains how to add, subtract and multiply complex numbers. 10:10 

Complex Numbers, part 2Grade: 5  8 In this lesson, learn how to divide complex numbers. 9:00 

Complex Numbers  Algebra LessonGrade: 5  8 A lesson on complex numbers. In this lesson, learn that a complex number is the sum or difference of a real number and an imaginary number and can be written in a + bi form. 2:05 
