Lesson Example Discussion Quiz: Class Homework |
Step-3 |
Title: The arithmetic progression of the terms |
Grade: 9-a Lesson: S4-L4 |
Explanation: Hello Students, time to practice and review the steps for the problem. |
Lesson Steps
| Step | Type | Explanation | Answer |
|---|---|---|---|
1 |
Problem |
Find the 9th term for the given AP: 7, 13, 19, 25, …. |
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2 |
Step |
Given AP: 7, 13, 19, 25, …. |
|
3 |
Clue |
Given |
\$ a = 7, n = 9\$ |
4 |
Formula: |
Common difference |
\$ d = a_2 - a_1 = 13 - 7 = 6\$ |
5 |
Formula: |
The Arithmetic Progression formula |
\$ a_n = a + (n-1)d\$ |
6 |
Hint |
Substitute \$a,d,n\$ values in formula |
\$ a_9 = 7 + (9 - 1)6\$ |
7 |
Step |
After simplification we get |
\$ a_9 = 7 + 8 \times 6\$ |
8 |
Step |
After simplification we get |
\$ a_9 = 7 + 48\$ |
9 |
Step |
After simplification we get |
\$ a_9 = 55\$ |
10 |
Answer |
C |
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Tutor: Questions
| Seq | Type | Question | Audio |
|---|---|---|---|
1 |
Problem |
What did you learn from this problem? |
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2 |
Clue |
What did you learn from the clues? |
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3 |
Hint |
What did you learn from the Hints? |
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4 |
Step |
What did you learn from the Steps? |
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5 |
Step |
How can we improve the Steps? |
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