Saxon Course 2: Lesson 4 (Slides)

Lesson 4

• Number Line and Sequences

​Number Line

• Integers: all numbers (negative, positive, and zero) like on a number line.

• (Notice that negative numbers are less than zero!)

​Using a number line to add or subtract:

​Comparison Symbols

• Examples: - 5 < 4 3 + 2 = 5 5 > -6

​negative five is less than 4

​three plus two is equal to five

​five is greater than negative negative six

​Sequences

• A sequence is an ordered list of terms that follows a certain pattern or rule.

• Listing even or odd numbers is a sequence!

  evens: 0,2,4,6,8,...

  odds: 1,3,5,7,9,...

  (The pattern is simply adding 2)

• Sometimes we multiply or divide for a sequence!

  Example: 1,2,4,8,16,...

  Can you figure out the pattern?

• In this sequence, the pattern is adding the next odd number:

  1, 4, 9, 16,...

  1 + 3 , 4 + 5 , 9 + 7 , 16,...

• Notice how sometimes the pattern isn't always adding or subtracting the same number every time!

​Daily Challenge!
Create your own sequence and then switch with another classmate to see if they can figure it out!

Here's mine:
9, 22, 35, 48,...

Can you guess the pattern?

​Still confused about the lesson?

​Here's the whole lesson on youtube!