For every level of challenge, your tasks this week focus on circles. We spent a short amount of time earlier in the year looking at the different parts of circles and finding out about them. This might seem like a long time ago now so the following lesson and video would be a really good place to start for everyone before completing the tasks for day 1:
https://www.bbc.co.uk/bitesize/topics/zvmxsbk/articles/z8c7qty
To help you with Day 2 and Day 3 challenges, the following lesson will help you as it focuses on solving problems about circles:
In the Day 2 and Day 3 PDFs, you will find the Bronze, Silver and Gold challenges.