Someone who works with younger members in my previous parish kindly sent me some activity sheets she has prepared for the Sacred Triduum. You might like to print them for your children/grandchildren and spend some time with them thinking and praying about what we are celebrating during these holy days.
A number of parishioners use Magnificat , a monthly publication which contains all the readings at Mass for every day, morning and evening prayers, information about the saints being celebrated, and much more. You can subscribe at the link above.
Congratulations to St Charles Catholic Primary School. Following a short inspection of the school on February 20, Ofsted's report states, "This school continues to be good." You can find the report on the school website here. I am in school at least once a week, and can strongly recommend St Charles to Catholic parents and their children.