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Friday, May 8th
Friday, May 8th
Background Information:
Background Information:
An algorithm is a detailed step-by-step set of instructions for solving a problem or completing a task. In computing, programmers write algorithms that instruct the computer on how to perform a task. There is usually more than one way to solve a problem or complete a task, but some of these ways will be better than others. The same is true for algorithms. When programmers write algorithms, they need to think about the solution that takes the least amount of time (efficiency) and uses the least amount of code (file size). They also need to think about things like sequencing (order of events), repetition, and conditional logic (if __ is true, then do ___).
An algorithm is a detailed step-by-step set of instructions for solving a problem or completing a task. In computing, programmers write algorithms that instruct the computer on how to perform a task. There is usually more than one way to solve a problem or complete a task, but some of these ways will be better than others. The same is true for algorithms. When programmers write algorithms, they need to think about the solution that takes the least amount of time (efficiency) and uses the least amount of code (file size). They also need to think about things like sequencing (order of events), repetition, and conditional logic (if __ is true, then do ___).
Learn more about algorithms:
Algorithm Facts for Kids (Kiddle Encyclopedia)
How to Explain Algorithms to Kids (Tynker)
Computer Programming (BrainPop Jr.)
Learn more about algorithms:
Algorithm Facts for Kids (Kiddle Encyclopedia)
How to Explain Algorithms to Kids (Tynker)
Computer Programming (BrainPop Jr.)
Challenge #1 "Monster Exchange"
Challenge #1 "Monster Exchange"
- Write out an algorithm, a set of step-by-step instructions, for someone else to recreate your drawing. Think about the best sequence (order) of your instructions. Be clear and detailed.
- Give your algorithm to a family member and ask them to follow the steps. Don't let them see the original drawing!
- Compare the two drawings. How close are they? Did you have any "bugs" in your algorithm? Could you have been more clear?
Challenge #2 "Pixel Art Algorithm"
Challenge #2 "Pixel Art Algorithm"
Background: One way that pictures are represented and stored in a computer or digital camera is as a grid of squares. Each square is called a pixel (Picture Element) and is assigned a code representing that pixel's color.
Background: One way that pictures are represented and stored in a computer or digital camera is as a grid of squares. Each square is called a pixel (Picture Element) and is assigned a code representing that pixel's color.
- Print out a color by number activity sheet. Pixel Puzzles (scroll about half-way down the page) or Megapixel coloring (categories on the left hand side, be cautious of advertisements)
- Pick one of the algorithms below and color your paper. Was it efficient? Try another one!
- Algorithm #1: Start with the top left corner. Color each pixel in order from left to right across the row. Move down to the next row. Repeat until the whole picture is done.
- Algorithm #2: Pick a color, then work along the rows from left to right, coloring pixels of only that color. When you get to the bottom of the page, pick the next color and start again. Repeat until the whole picture is done.
- Algorithm #3: Pick an uncolored pixel and color it. Then, color all pixels around it that are the same number, moving outwards until there are no more adjacent pixels with that number. Then pick a new uncolored pixel and repeat until the whole picture is done.
The Chambers' Family Solutions ...
The Chambers' Family Solutions ...
Evan's Original Monster
Evan's Original Monster
Redrawn by Mrs. Chambers
Redrawn by Mrs. Chambers
Ian's original Monster
Ian's original Monster
Redrawn by Evan
Redrawn by Evan
This one had problems with both the algorithm and the instruction following! But, it gave us a really good laugh. :)
Mrs. Chambers' Original Monster
Mrs. Chambers' Original Monster
Redrawn by Ian
Redrawn by Ian
Ian's Pixel Art
Colored with Algorithm #2
Ian's Pixel Art
Colored with Algorithm #2
Evan and I each did 3 pixel art papers that fit together to make a larger picture. We used all 3 algorithms. We both agreed that #2 was quicker than #1, but sometimes hard to find all the numbers we were looking for and we missed a few that we had to come back to. We also thought that #3 was satisfying and fun to do.
Evan and I each did 3 pixel art papers that fit together to make a larger picture. We used all 3 algorithms. We both agreed that #2 was quicker than #1, but sometimes hard to find all the numbers we were looking for and we missed a few that we had to come back to. We also thought that #3 was satisfying and fun to do.
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