I've begun a "Question of the Day" (QOTD) contest in my grade 8 class where I post a problem solving question on the wall each day and students are challenged to answer it in their own time. I need more ideas for good questions.
Question: Where (either online or in print) can I go to find a long list of short and simple problem solving questions for my students?
Here are my criteria for QOTD questions:
1) Non-routine questions for grade 7-9 students, most often based upon content in the syllabus. Questions can range widely from easy to difficult.
2) Very important: Questions should be short and easily understood so that they fit on an A4 paper with large font and I don't have to spend time explaining what the question means.
3) Questions should have clear, concise solutions.
Here are some examples of questions I've given in the past that have worked reasonably well:
What is the measure of an interior angle of a regular decagon?
How many pairs of parallel edges does a rectangular prism have?
If I flip a coin 3 times in a row, what is the probability of getting heads all 3 times?
Find the next number in the pattern: $1, 1, 2, 3, 5, 8, 13, 21, ...$