random.org

random.org is a great numeracy resource which generates random numbers. It’s not just a simple random number generator; it has lots of useful applications, such as random dice, random playing cards and a random time generator.

The dice and playing cards came in very handy for demonstrating arrays to learners, ideas which are explained in these websites:

22 hands-on ways to teach multiplication

How to teach arrays (Miss Giraffe’s blog)

The times table grid from BBC Skillswise is great for practising and visualising arrays.