1. IC: Decimal WPs…again! HW: Extra Credit #6 Materials
Friday, 9/23/16
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IC: Decimal WPs…again!
HW: Extra Credit #6
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Materials
Pencil & grading pen
Slate, Marker, Eraser
Ch. 2 Math Folder
p.70(3-4, 6, 9, 13-16) 1 1 1

2. Write an expression that matches this situation
1) The temperature was degrees when Bob the Bear woke up in Alaska. At lunch time, the thermometer showed -5 degrees. What was the change in temperature from when Bob the Bear woke up until lunch time?
Write an expression that matches this situation
Solve.
High – Low
-5 – (-27.2)
The change in temp. was 22.2°

3. 2) Solve. 3) Solve. 9.41 – (-7) -2.38 + 4.7 9.41 + 7 2.32 9.41 + 7.00
4.70 -
2.38
9.41 + +
2.32
7.00
16.41
16.41

4. 4) Find the distance between -8 and -17.5 on a number line.
Expression:
High – Low
17.5
-8 – (-17.5) -
8.0
9.5
Solve:

6. A D C B Level 2: Partial Command Level 3: Moderate Command
Level 4: Strong Command
Level 5: Distinguished Command
Incomplete
Complete
Based on conjecture and/or stated or faulty assumptions
Based on conjecture and/or stated assumptions
Incomplete or illogical steps
Logical steps but incomplete
Logical steps
Major calculation errors
Minor calculation errors
Calculation precision
Limited vocabulary, symbols & labels
Some vocabulary, symbols and labels
Correct vocab., symbols & labels
Correct vocabulary, symbols and labels
Partial justification of conclusion
Justification of conclusion
Evaluates the validity of other approaches and conclusions
Evaluates, interprets and critiques the validity of other approaches
Evaluates, interprets and critiques the validity and efficiency of other approaches and reasoning and provides a counter-example where applicable.
Efficiently solved/explained Generalization of an argument or conclusion A D C B
Really good explanation of WHY…

7. 5) Find the distance between 4.2 and -10 on a number line.
Expression:
High – Low
4.2
4.2 – (-10) +
10.0
14.2
Solve:

8. How far does the dolphin travel?
6) A dolphin is at -5.6 feet. It swims up and jumps out of the water to a height of 9 feet.
Write a subtraction expression for the vertical distance the dolphin travels.
How far does the dolphin travel?
High – Low
9 – (-5.6)
14.6 feet
9.00 +
5.6
14.60