That review doesn't say much. The game was not intended as an education game. This idea was completely random. I woke up one morning and bam! I had the idea for this game. And it is literally meant as a simple puzzle/thinking game, education was not the goal at all.
Unfortunately, I had the game idea at the FINAL DAY before submission time, this is why it is so incomplete. It's a miracle this game is even playable!
I plan a post-game jam version 2.0 which will be (hopefully) much better and more complete because I am NOT happy how the game jam version turned out.