A message for parents and children when accessing these lessons:
The 'harder' challenges are based on the year 5 curriculum. The children have either learnt this before when at school or it may be new learning which they would be completing in year 5. The 'easier' challenges should be completed if it is too difficult for the children to access as these are easier or more recap lessons.
Please make sure to look at both lessons if you are unsure and choose the one that is more suitable for your child.