Old NYC and Old SF are two great websites featuring thousands of historical photographs of New York City and San Francisco. The images are sourced
A couple of months ago the producers of the popular Crash Course channel on YouTube started a Crash Course for Kids channel. Crash Course for
On Friday afternoon I wrote about Silk.co‘s updated tools for creating data visualizations. The first time that you use Silk the account dashboard can be
A teacher’s tool that turns the printed pages of any classroom into engaging digital activities.
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