Potentially 3 lessons worth of content.
Includes interesting facts of Lowest Common Multiples in nature. Uses the "factorpillar" method to teach factors and highest common factors.
Introduces prime numbers using Sieve of Eratosthenes
and shows how to calculate whether large numbers are prime. Also demonstrates the prime factor tree method to show prime factor decomposition. Teaches how to use Venn Diagrams with Prime Factors to calculate the HCF and LCM of larger numbers.
Includes quick speed game called Optimus Prime to help with prime factors and has a slide on Goldbacks Conjecture which talks about the million dollar reward for disproving a simple problem involving prime numbers.
Over 50 extra questions and answers at the end on HCF, LCM and PF if required.