General Knowledge/Fun:
* Easy: What's your favorite animal? What's your favorite color? What did you do today?
* Medium: What is something you are good at? What is your favorite book? If you could have any superpower, what would it be and why?
* Harder: If you could travel anywhere in the world, where would you go and why? What's a problem in your community and how could we solve it?
Math:
* Easy: What is 2 + 2? How many fingers do you have? Which number is bigger, 5 or 10?
* Medium: What is 15 - 7? If you have 3 apples and I give you 2 more, how many apples do you have?
* Harder: If you have 12 cookies and want to share them equally with 3 friends, how many cookies does each person get? What is half of 24?
Science:
* Easy: What is the name of our planet? What do plants need to grow? What is the sun?
* Medium: What are the different states of matter (solid, liquid, gas)? Why is the sky blue? How do plants make their food?
* Harder: What is the water cycle? How do animals adapt to their environment? Explain how a shadow is formed.
Reading/Language Arts:
* Easy: What is your name? Can you read this word: [simple word]? What is a sentence?
* Medium: Can you tell me a story about a [animal/object]? What is the main idea of this story? Can you write a sentence about your favorite thing?
* Harder: What is the difference between a noun and a verb? Can you identify the subject and predicate in this sentence? What is the author trying to say in this passage?
Social Studies:
* Easy: What is your address? What is your favorite holiday? What country do you live in?
* Medium: What are some rules at school? What are some things that make your community a good place to live? Who is the President of the United States? (Or equivalent for their country)
* Harder: What are some important events in history? What are some different cultures around the world?
Remember to adjust the difficulty based on the student's age and grade level. It's also important to make the questions engaging and encourage them to think critically and creatively. Open-ended questions are often better than those with simple yes/no answers.