Hi, a warm welcome to the site. Activity planning helps to demonstrate what you know about child development and planning for individual and group needs.
If you looked at the hour between 10am and 11am each morning that you're in the setting what happens? how many activities would you say a child engages in during that time?
Consider what you know about the children you'll be planning the activity for eg. their stage of development and any specific interests - walking, language, food. Does play happen inside and outside?
What resources/toys do you have available?
The development matters guidance can be helpful -
download on this page
Sensory activities for exploration could be a bowl of balls, basket of books, a floor tray of dried pasta, cups and spoons. A box of fruit and veg.
Remember interaction is as important as you being there observing and supporting the children when necessary.
Activities for problem solving could be match & slot/shape sorting, tower building/block stacking, hat wearing - all manner of items that can sit safely on a head! noise toys such as
button pressing and rattles,
pop up and peek-a-boo type toys
What does it mean to be one by Jennie Lindon
The 8-10 month old development checklist on USA fisher price.com may be useful to see how you might plan an activity around expected stages.
Hope this helps a little xx