Explain and justify answers on the basis of mathematical properties, structures, and relationships

(0306.1.8)

Links checked 1-25-10

1. Extended Explanations - Many activities to select. Go over the problem, then select the extended response button at the bottom for details on how to solve the problem - video lesson
2. Figure this Math Challenge - How long do you have to stand in line?
3. Estimate the Difference between the two Numbers . - Online quiz
4. Giving Reasons - You can explain and give reasons for your answers.
5. Reasoning Problems - Answer each question. Then explain your reasoning..