7 & 9 year olds are the perfect age for learning how to cook / bake.
Make biscuits or fairy cakes. Or teach them how to boil an egg? Kids love cooking, and teach them how to wash-up and dry the dishes whilst you are at it.
Exactly this. You can build a camping stove before they start too. I had a great morning building a penny stove with a mate's daughter, for which you need 2 soft drinks or beer cans, a sharp tool (eg nail) and normal household scissors. And a penny. Coat hangers or bike spokes make a pot stand. The little girl in question, who might have been 9 or 10, then boiled an egg which she pronounced delicious.
In the afternoon, nature table. What are worms, where do they live, what do they eat? What eats them?
Tomorrow, write a story about a worm or other small animal that has an adventure.
Older children - Science: Action of surfactant chemicals, including soap, on microorganisms including viruses.
Personal and Social Education: The nature of society's response to threat, at an individual and group level, and the role of popular media.
History: The Great Plague of London. Causes, effect and resolution.
Write on both sides of the paper. You may consult the internet. Extensive copying and pasting of Wikipedia pages can and will be detected, such sections will not count towards your final mark unless evidence of independent thought is shown.
That should work.