Number Explorer Select a number and investigate its factors, prime factors, divisibility etc. Great way for upper KS2 to investigate number
100 Square Spots. Interactive 100 square used for examining number facts and series up to a hundred Choose a colour, then start clicking on numbers. Click a number again to remove a spot. Hold down a menu colour to remove Read More …
Sieve of Eratosthenes Named after the Greek Mathematician. This classic method of finding prime numbers is also great for teaching about factors and multiples. The visnos sieve allows for multi colored squares this allows identification of any numbers prime factors.
100 Square A tablet friendly 100 square with the ability to investigate multiples, primes etc.
GOT IT! – NRICH http://www.mathszone.co.uk/images/thumbimg-69l.jpg Add numbers to reach exactly the target number – before the other player or computer
Mend the number square – BBC http://www.mathszone.co.uk/images/thumbimg-65B.jpg Put the missing numbers back in the number square. Yr R/1/2