Lesson 2.7 Try, Test, and Revise

1. Lesson 2.7Try, Test, and Revise

2. 4 Steps to Problem Solving • _______________________ • _______________________ • _______________________ • _______________________

3. Conjecture • We need to remember the meaning of this word: A conjecture is a ________________ ____________. It is then __________ ______________ to be more accurate. Possibly, it may be shown _________.

4. Let’s look at a problem. On vacation, your family spent ______ driving ________ across a state. Part of the time you drove on a scenic state highway at _____________. The rest of the time you drove on an interstate at ______________. How long did you drive on each type of highway?

5. Step 1: Understand the problem • ___________________________ • ___________________________ • ___________________________

6. Step 2: Make a plan

7. Step 2: Carry out the plan

8. Step 4: Check the answer. • Think about this: if the whole trip was taken at the higher speed, that would be _________________ ___________. We want just a bit less…so _______________ seems reasonable.

9. Tonight’s Assignment • GPS Worksheet 2.7