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Now it's time for some
computational thinking... |
Directions: Add all of the numbers from 1 to 200 in your head.
By the way, you will have 30 seconds to complete this task using mental math. I will use a timer.
By the way, you will have 30 seconds to complete this task using mental math. I will use a timer.
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Was anyone able to figure out the answer?
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Answer: 20,100
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Did anyone think it was so hard that you weren't even going to bother trying to figure it out?
Did anyone start to try to figure it out and then give up because you thought it was just too difficult to compute using mental math?
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What if we could break down the math problem into smaller, more manageable pieces? Do you think we could solve it quicker then?
Lets take a number from each end of 1 to 200 and add them together. 1 + 200 = ?
Now lets add 2 and 199. 2 + 199 = ?
Next, add 3 and 198. 3 + 198= ?
Remember: The process of breaking a problem into smaller pieces is called DECOMPOSITION.
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Are you starting to see a PATTERN?
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What is the last pair of numbers we will have to add together if we finish this pattern?
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How many pairs of numbers will we have when we are done at the end?
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| code-course3-activity1-computationalthinkingworksheet-students.pdf |
