1. Act it out.
2. Make a model.
3. Break problem in to manageable parts.
4. Guess cheek and improve.
5. Look for and describe with pattern or rule.
6. Write a sum or number sentence .
7. Make a table or list.
8. Have I seen a similar problem.
9. Draw a diagram or graph.
10. Test all possibilities.
11. Work backwards.
12. Find an exception.