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There are many possible solutions to Jakub's code problem. Students may choose to ignore Jakub's code entirely and figure out their own code. They can build their 3x2x4 tunnel from the red square by having their agent turn either left or right when breaking through the tree, or by destroying left or right if they choose to work out a more complicated code sequence.
Solution Notes:
Solution Notes:
For this code to work as outlined here, students will need to use the environmental clues to make sure their agent is facing in the right direction (south).
Turning the agent to return though the tunnel isn't mandatory. Students may choose to have their agent destroy backward through the charred tree and their code will succeed. It does require an additional layer of spatial thinking to figure out how to do everything backward.
Talking to Jakub will give the students the button option to reset the challenge and fix any holes in the tree.
Students can document their final working solution by resetting the challenge and using screen capture to document their code and its result.
The ROM Intern's faulty code is missing the agent's return through the tree.
Solution 1
Solution 1
This solution uses Jakub's code and fixes the problem -- the Intern forgot to have the agent return after drilling through the tree and turning around -- by nesting everything inside a "repeat 2 times" block.
The principle at the heart of Solution 1 and Solution 2 in both cases is "and then we tell the agent to do all that again."
If students recognize that an extra move-and-turn won't change the coding outcome or prevent them from passing through the tunnel, they can just use another nested repeat loop to have the agent do everything again and finish on the red square where it started.
Solution 2
Solution 2
This solution uses the Jakub's code and fixes the problem -- the Intern forgot to have the agent return after drilling through the tree and turning around -- by duplicating the first "repeat 4 times" block and adding it to the end of the code block.
It's not as clean a code as Solution 1, and does not show as much mastery and understanding of loops and repeats, but is perfectly effective. You may wish to remind them that in coding we try to do it in as few blocks as possible to reduce the places where errors can creep in.
The students are free to use whatever chat command will work best for them.
Museum Math Solutions - charred tree.mp4
Solution 3
Solution 3
This solution is one that students may come up with on their own, if they're not basing their code off the ROM Intern's.
This solution is perfectly effective, though it doesn't show mastery of nested coding in the way that the preceding solution does.
Students may come up with additional repeating solutions. For example, students may have their agent destroy forward, move forward, destroy up, move up, destroy up, and move up again. This solution will also be effective, though students must anticipate an extra step on the end in order to clear all of the blocks effectively.
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