KS3 natural numbers worksheets and teacher-led PowerPoint covering factors, multiples, primes, bounds, consecutive numbers and mathematical language. This Cogwins pack uses a fixed 1–15 bead number line throughout, so students can focus on the mathematics and the wording of each question rather than learning a new visual format from page to page. New elements are introduced one at a time and then combined gradually. Closely matched questions change one element while the rest stays the same, making the pack suitable for teaching, consolidation, intervention, catch-up, homework and revision. Includes: 31 printable worksheets in Student and Teacher versions Matching teacher-led PowerPoint presentation Worked examples before new ideas are combined Completed Teacher answers Topics include: Multiples and factors Common factors and highest common factor Odd and even numbers Common multiples Prime and composite numbers At least, at most, more than and less than Inclusive and strict bounds Consecutive numbers Letters standing for numbers Exclusions and exception language Reading completed number lines Mixed review Designed primarily for ages 11–14 / KS3, while remaining usable across different curricula. Want to try the approach first? View the Free Natural Numbers Sampler.

Free KS3 natural numbers sampler with two printable worksheets, answer pages and a matching teacher-led PowerPoint. The sampler uses the same fixed 1–15 bead number line and teaching approach as the full Cogwins pack. Students practise mathematical language and number properties while keeping the visual structure constant from question to question. Want the complete resource? View Natural Numbers: Properties, Bounds & Rules. This free sampler includes: 2 printable Student worksheets Completed answer versions A4 and US Letter PDFs Matching teacher-led PowerPoint The sample questions include: At least, at most, more than and less than Factors and multiples Odd and even numbers Inclusive bounds Consecutive numbers Simple number-to-letter rules Exclusions and mixed practice The two worksheets contain their own questions rather than extracts from the paid pack, so they can be used directly in class while giving you a clear view of the Cogwins layout and progression. Designed primarily for ages 11–14 / KS3.