Please take a look at the links below to access the "White Rose" maths activities for this week as well as "BBC Bitesize" for follow up worksheets.
. You will see there is a short video for you to share with your child on White Rose Maths and then BBC bitesize has some worksheets available to explore the concept further:
https://whiterosemaths.com/homelearning/year-1/
https://www.bbc.co.uk/bitesize/tags/zjpqqp3/year-1-and-p2-lessons/1
Enjoy!