In this lesson, students explore decreasing arithmetic sequences in which the common difference is a decimal number.
The task is to investigate whether the sequence includes zero, and if not, which term of the sequence is closest to zero.
There are opportunities for students to generalise their findings and much routine practice of subtracting decimals is embedded in the task.
Why teach this>
Decimals are all around us, and yet to many people are a bit of a mystery. This lesson aims to help students become more confident using them.
Key curriculum links
- Extend understanding of the number system and place value to include decimals
- Understand and use place value for decimals
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KS3 Maths Lesson Plan – Investigate Patterns using Sequences of Decimals
