Why do hyenas laugh?

Ever wonder why hyenas laugh? Find out why from Smithsonian video!

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Love this app! Great for Sign Language. This is the first app I found that breaks down sign language in the way it should be learned. By topic and with individual videos of the words. Love it!!

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Now parents can learn ASL while standing on line at the grocery line, while sitting at the doctor’s office, anytime. Same thing with the students. They can practice it on the bus, in the car. It’s jus...

Joan Krasnisky Superintendent, Marie Katzenbach School for the Deaf

I needed something to help with metrology. It was simple and easy, just what I needed.

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Build Confidence Through Practice with FactSumo!

Sharpening Your Skills

Start with the building blocks of knowledge: skills. Take things slow, or conquer concepts at the speed of FactSumo.

Reaching Your Goals

Practice is key. Every day you'll practice something new, and apply it to tomorrow. There's no limit to what you can accomplish.

Igniting Your Curiosity

Learn like never before. Combine the elements of sound, picture, video, and text for a unique learning experience.