What are some good suggested resources for learning about blocks and GCD in Mac OS X and iOS
Blocks help children learn to take turns and share materials, develop new friendships, become self-reliant, increase attention span, cooperate with others, and develop self-esteem. — Kathleen Harris. Development in all areas. Block play requires fine and gross motor skills.
MORE TIPS TO ENCOURAGE BLOCK PLAY:Hang the photos around the block area to inspire your child. Add a small basket of people and a small basket of cars to the block area. See how it changes the play. Encourage your child to make signs for his or her buildings with a basket containing small pencil and papers.
A learning block aka block to learning is a temporary or permanent limiting belief that can hinder students in their learning process. Typical learning blocks include I don't know what to do, I can't do it and I don't want to do it.
I would start with Apple's Blocks Programming Topics document or with Programming with Blocks on Apple Devices. As gs mentioned, also check out Mike Ash's articles (and also subscribe to his RSS feed, as I'm sure more blocks-related posts will come up):
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