Egypt Run length Encoding Pixel Puzzle

Colour in this pixel puzzle with a twist and learn about the way images are shrunk (or “compressed” to make them take up less space or allow them to be sent over a network faster. Learn about different ways images are represented.

Instructions: Run length Encoding Puzzles

We give these puzzles in two forms, one slightly harder where everything is numbers and the other easier to follow where the colours are given explicitly. Each pair gives the number of pixels to colour and the colour to use. Colour the pixels following the instructions in order.

The Image Key

35 Blue.
35 Blue.
21 Blue, 4 Yellow, 10 Blue.
20 Blue, 6 Yellow, 9 Blue.
19 Blue, 8 Yellow, 8 Blue.
19 Blue, 8 Yellow, 8 Blue.
19 Blue, 8 Yellow, 8 Blue.
19 Blue, 8 Yellow, 8 Blue.
20 Blue, 6 Yellow, 9 Blue.
21 Blue, 4 Yellow, 10 Blue.
13 Blue, 1 Black, 5 Blue, 1 Black, 15 Blue.
12 Blue, 1 Black, 1 Brown, 1 Black, 3 Blue, 1 Black, 1 Brown, 1 Black, 14 Blue.
11 Blue, 1 Black, 3 Brown, 1 Black, 1 Blue, 1 Black, 3 Brown, 1 Black, 13 Blue.
10 Blue, 1 Black, 5 Brown, 1 Black, 5 Brown, 1 Black, 7 Blue, 1 Black, 4 Blue.
9 Blue, 1 Black, 7 Brown, 1 Black, 5 Brown, 1 Black, 5 Blue, 1 Black, 1 Brown, 1 Black, 3 Blue.
8 Blue, 1 Black, 9 Brown, 1 Black, 5 Brown, 1 Black, 3 Blue, 1 Black, 3 Brown, 1 Black, 2 Blue.
4 Blue, 1 Black, 2 Blue, 1 Black, 5 Brown, 1 Black, 5 Brown, 1 Black, 2 Brown, 1 Black, 2 Brown, 1 Black, 1 Blue, 1 Black, 5 Brown, 1 Black, 1 Blue.
3 Blue, 1 Black, 1 Brown, 1 Black, 6 Brown, 1 Black, 1 Brown, 1 Black, 6 Brown, 1 Black, 1 Brown, 1 Black, 2 Brown, 1 Black, 7 Brown, 1 Black.
2 Blue, 1 Black, 3 Brown, 1 Black, 4 Brown, 1 Black, 3 Brown, 1 Black, 4 Brown, 1 Black, 3 Brown, 1 Black, 2 Brown, 1 Black, 7 Brown.
1 Blue, 1 Black, 5 Brown, 1 Black, 2 Brown, 1 Black, 5 Brown, 1 Black, 2 Brown, 1 Black, 5 Brown, 1 Black, 2 Brown, 1 Black, 6 Brown.
1 Black, 7 Brown, 1 Yellow, 1 Black, 7 Brown, 1 Black, 1 Yellow, 7 Brown, 1 Black, 8 Yellow.
35 Yellow.
35 Yellow.
35 Yellow.
35 Yellow.

Computational Thinking Hint

The way data (here of images) is represented affects the amount of storage needed. Raster graphics involves treating an image as a grid. You then store a number to represent the colour at every point (or pixel) in the grid. Run-length encoding cuts how many numbers you need to store by counting the runs of numbers.

Resources: Run length Encoding Puzzles

Here are some Run length Encoding Pixel Puzzle Picture sheets and solutions that you can download. The version without a colour key is easier to follow so suitable for younger students.

Sheets to download