# Descending arithmetic sequences

In this lesson, we will learn to find the nth term rule for descending arithmetic sequences using tables.

Quiz:

# Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.Which column has the position-to-term rule 4n + 1?

1/5

Q2.Which column has the position-to-term rule 4n - 1?

2/5

Q3.Work out the position-to term-rules for column a.

3/5

Q4.Work out the position-to term-rules for column b.

4/5

Q5.Work out position-to-term rules for the sequence 3, 7, 11, 15, 19, ...

5/5

Quiz:

# Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.Which column has the position-to-term rule 4n + 1?

1/5

Q2.Which column has the position-to-term rule 4n - 1?

2/5

Q3.Work out the position-to term-rules for column a.

3/5

Q4.Work out the position-to term-rules for column b.

4/5

Q5.Work out position-to-term rules for the sequence 3, 7, 11, 15, 19, ...

5/5

# Video

Click on the play button to start the video. If your teacher asks you to pause the video and look at the worksheet you should:

• Click "Close Video"
• Click "Next" to view the activity

Your video will re-appear on the next page, and will stay paused in the right place.

# Worksheet

These slides will take you through some tasks for the lesson. If you need to re-play the video, click the ‘Resume Video’ icon. If you are asked to add answers to the slides, first download or print out the worksheet. Once you have finished all the tasks, click ‘Next’ below.

Quiz:

# Descending Arithmetic Sequences Quiz

Don’t worry if you get a question wrong! Forgetting is an important step in learning. We will recap next lesson.

Q1.What do we mean if we describe a sequence as "descending"?

1/5

Q2.Which of the following is an example of a descending sequence?

2/5

Q3.What is the nth term of 10, 8, 6, 4, 2, ...?

3/5

Q4.What is the nth term of -4, -7, -10, -13, ...?

4/5

Q5.Find the first 5 terms of the sequence -5n + 2.

5/5

Quiz:

# Descending Arithmetic Sequences Quiz

Don’t worry if you get a question wrong! Forgetting is an important step in learning. We will recap next lesson.

Q1.What do we mean if we describe a sequence as "descending"?

1/5

Q2.Which of the following is an example of a descending sequence?

2/5

Q3.What is the nth term of 10, 8, 6, 4, 2, ...?

3/5

Q4.What is the nth term of -4, -7, -10, -13, ...?

4/5

Q5.Find the first 5 terms of the sequence -5n + 2.

5/5

# Lesson summary: Descending arithmetic sequences

## Time to move!

Did you know that exercise helps your concentration and ability to learn?

For 5 mins...

Move around:
Walk

On the spot:
Chair yoga