fixes typo in whymusicblocks.md

WhyMusicBlocks.md

@@ -56,7 +56,7 @@ Music, like computer science, offers a rich environment for exploration and prob
 
 Music Blocks and Curriculum
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-While Music Blocks is largely agnistic about curriculum design, it is inspired by the work of Seymour Papert. Papert used the term “Microworld” to describe the world of geometry explored when children used Logo. A microworld is a “subset of reality or a constructed reality whose structure matches that of a given cognitive mechanism so as to provide an environment where the latter can operate effectively. The concept leads to the project of inventing microworlds so structured as to allow a human learner to exercise particular powerful ideas or intellectual skills.” (Papert 1980) 
+While Music Blocks is largely agonistic about curriculum design, it is inspired by the work of Seymour Papert. Papert used the term “Microworld” to describe the world of geometry explored when children used Logo. A microworld is a “subset of reality or a constructed reality whose structure matches that of a given cognitive mechanism so as to provide an environment where the latter can operate effectively. The concept leads to the project of inventing microworlds so structured as to allow a human learner to exercise particular powerful ideas or intellectual skills.” (Papert 1980) 
 
 In a microworld, an individual is able to use a technological tool for thinking and cognitive exploration that would not be possible without the technology. But not just any technology. “The use of the microworld provides a model of a learning theory in which active learning consists of exploration by the learner of a microworld sufficiently bounded and transparent for constructive exploration and yet sufficiently rich for significant discovery.“ (Papert 1980)