Tuesday, December 11, 2012

Third 6 Weeks Math CBA

Our Math CBA for the 3rd 6 weeks will be on Wednesday, December 19th.  The following concepts will be covered:
  • pictographs
  • metric and customary length
  • perimeter
  • area
  • temperature
  • range (example below)

Here are some activities to review each concept.

Pictographs
Graphs Practice
Graphs With Questions
Pictographs Quiz
Pictograph Quiz 2
Pictograph video
Pictograph Video 2
Pictographs Video 3

Customary and Metric Measurement
Measuring in Centimeters
Measuring in Inches
Measurement Test
Choose the Best Metric Unit
Choose the Best Customary Unit
Choose the Best Metric Unit
Choose Customary Measurement

Perimeter and Area
Perimeter and Area
Basketball Perimeter
Shape Surveyor
Adam Ant Perimeter
Area
Perimeter
Perimeter Word Problems
Measure the Perimeter


Temperature
Reading a Thermometer 
Textbook Chapter Quiz on Perimeter, Area, and Temperature


Range Explanation for Parents
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Example Problem:
Matthew bought 6 Wii Games with his Gift Cards that he got for his Birthday. The least expensive game he bought was $14. The most expensive game was $40. What is a reasonable amount that Matthew could have spent on all 6 games? Mark your answer.
Common Error: Multiply 6 times 14 and 6 times 40. The problem states that he at least bought one game for $14, and one for $40. Therefore, we need to find the very least price by adding $14 5 times and $40 once. Then $14 once and $40 5 times, to find very highest cost. The answer will be somewhere in between.
Have students write #’s for the number of items purchased.
Least Expensive                                                          Most Expensive
1)    $14                                                           1)   $14
2)    $14                                                           2)   $40
3)    $14                                                           3)   $40
4)    $14                                                           4)   $40
5)    $14                                                           5)   $40
6)    $40                                                           6)   $40
      $110                                                               $214
Therefore, the games must cost somewhere from $110 to $214.
Next, check choices.
A)   Less than $84
B)   Between $84 and $109
C)   Between $110 and $214
D)   More than $214
C) is the correct answer.
You may want to start with lower numbers and only 3 to 4 items. Change number of items each problem.

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