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Co-authored-by: Marianne Corvellec <marianne.corvellec@ens-lyon.org>

Author: JeremyPike

episodes/02-image-basics.md

@@ -896,7 +896,7 @@ Execute a similar command on the tree JPEG file: `zip tree.zip tree.jpg`
 (`Compress-Archive tree.jpg tree.zip` with PowerShell).
 
 Having created the compressed file,
-use the `ls -al` command (`dir` with PowerShell) to display the contents of the directory.
+use the `ls -l` command (`dir` with PowerShell) to display the contents of the directory.
 How big are the compressed files?
 How do those compare to the size of `ws.bmp` and `tree.jpg`?
 What can you conclude from the relative sizes?

episodes/03-skimage-images.md

@@ -187,10 +187,10 @@ Don't forget to use `fig, ax = plt.subplots()` so you don't overwrite
 the first image with the second.
 Images may appear the same size in jupyter,
 but you can see the size difference by comparing the scales for each.
-You can also see the differnce in file storage size on disk by
+You can also see the difference in file storage size on disk by
 hovering your mouse cursor over the original
-and the new file in the jupyter file browser, using `ls -l` in your shell 
-(`dir` with Windows PowerShell), or the OS file browser if it is configured to show file sizes.
+and the new files in the Jupyter file browser, using `ls -l` in your shell 
+(`dir` with Windows PowerShell), or viewing file sizes in the OS file browser if it is configured so.
 
 :::::::::::::::  solution