Users of's bigchalk Library now have access to more than 3,000 three-dimensional animations from Working Stock, a provider of nontraditional visual stock content and a division of Knight Ridder Tribune Information Services. These animations, which will be updated daily, aim to help students better understand how a device or process works and help them visualize complex concepts.

"Visual aids are so critical to student comprehension. Animations, such as these, can often...

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