Page 14 - Practicum 5_Buku Digital Flip pdf_Grace Margareth_Arithmetic Sequence and Series Grade XI

Mathematics Teaching Material Sequence and Series Grade XI

Arithmetic Sequences and Series

A. Learning objectives
After learning activity 2, you are expected to be able to:
1. Understand arithmetic sequences,

2. Determine the nth element of an arithmetic sequence,

3. Understand arithmetic series,
4. Determine the sum of the first n terms of an arithmetic series.

B. Animated Videos

Watch the following video as a medium to help understand the material.

C. Material Description

1. Arithmetic Sequence

Finding Arithmetic Sequence Concepts

Illustration 1

The amount of your pocket money for grade 1 elementary school is 5000, then your pocket

money when you're in grade 2 elementary school increases to 7000, then your pocket money
when grade 3 elementary school increases to 9000, and so on. If you pay attention, your pocket

money increases every year, which is 2000. The order is 5000, 7000, 9000,…

Now, the order of the amount of pocket money that always increases constantly (has a

constant pattern of increase) is what represents the concept of an arithmetic sequence.

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