Patterns and Sequences

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This Key Stage 3 Patterns and Sequences scheme of work brings together the lessons I use when I want students moving confidently from describing patterns and finding rules to working with position-to-term formulae and graphs. The page sets out what I expect students to bring from earlier algebra and number work, the ideas I keep coming back to in class, and how this unit fits the wider KS3 algebra strand.

Use it as a departmental reference: sequence the lessons below in the order that matches your scheme, adapt timings to your cohort, and cross-link to other units when you need extra practice on linear functions or substitution. Everything here describes the unit at a glance—the individual lesson pages hold the presentations, worksheets and tutorials.

Nth Term of Picture Sequences

For more schemes and topic routes across KS3, GCSE and A-Level, browse the Mr Mathematics Curriculum Hub.

How to use this scheme

Read the four summary cards first so you know the prior expectations and the language you want students to hear consistently. Then work through the lessons in the order below unless your department timetable needs you to split content across terms—if you do, keep term-to-term description and position-to-term rules clearly linked so students do not treat the nth term as a trick separate from the sequence itself. Jump straight to the lesson list when you are ready to open resources or set cover.

Mr Mathematics membership

Presentations, worksheets, question generators and video tutorials for the lessons in this unit are available to members. Explore Mr Mathematics membership if you need full access to the library and schemes of work.

Prerequisite knowledge

Students should arrive with these ideas secure enough to apply them when describing sequences and using formulae.

  • Use simple formulae.
  • Generate and describe linear number sequences.
  • Express missing-number problems algebraically.
  • Find pairs of numbers that satisfy an equation with two unknowns.

Key concepts

These are the ideas I keep explicit while teaching this unit.

  • A sequence or number pattern is an ordered set of numbers or diagrams that follow a rule.
  • A term is a number or diagram in a sequence.
  • A sequence can be described on a term-to-term basis or position-to-term.
  • A formula can be used to calculate the term of a sequence when given its position number. n is often used to represent the position number for any term of the sequence.
  • Linear sequences will appear as straight lines when drawn as a graph.

Working mathematically

How this unit supports fluency, reasoning and problem solving in Key Stage 3.

  • Develop fluency
    • Select and use appropriate calculation strategies to solve increasingly complex problems.
    • Develop algebraic and graphical fluency, including understanding linear functions.
  • Reason mathematically
    • Identify variables and express relations between variables algebraically and graphically.
  • Solve problems
    • Begin to model situations mathematically and express the results using a range of formal mathematical representations.
    • Select appropriate concepts, methods and techniques to apply to unfamiliar and non-routine problems.

Subject content

National curriculum links this unit supports at Key Stage 3 (Algebra).

  • Substitute numerical values into formulae and expressions, including scientific formulae.
  • Understand and use standard mathematical formulae.
  • Recognise, sketch and produce graphs of linear functions of one variable with appropriate scaling, using equations in x and y and the Cartesian plane.
  • Generate terms of a sequence from either a term-to-term or a position-to-term rule.
  • Recognise arithmetic sequences and find the nth term.
  • Recognise geometric sequences and appreciate other sequences that arise.

Frequently asked questions

How do I use this scheme page in practice?

Use it as the map, not the lesson. Check prerequisite knowledge with your classes, align the key concepts with your department’s vocabulary, then teach the lessons in the order that fits your timetable—opening each lesson from its own resource page when you need the presentation or worksheet.

What should students already know before this unit?

They need to be comfortable with simple formulae, describing linear sequences in words, basic substitution and finding pairs that satisfy simple equations—so moving to nth-term rules and graphs is a development of structure, not a fresh start.

Where are the lesson presentations and worksheets?

Each lesson in the list below has its own page on Mr Mathematics with downloadable resources and, where available, an online lesson and question generator—access depends on your membership level.

Can I change the order of the lessons?

Yes, if your scheme requires it—keep an eye on dependency: students usually need fluent term-to-term description and a clear idea of position number before the nth term and graph work feel connected. If you reorder, re-check the key concepts card so term, rule and formula language stay consistent across the unit.

Lessons in this Patterns and Sequences scheme of work

Lesson titles as listed on the scheme—open each from the site navigation or search when you are ready to teach.

  • Describing Number Patterns
  • Finding the nth Term of a Sequence
  • Creating a Sequence using Formulae
  • Describing Picture Sequences
  • Plotting Sequences on a Grid

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