sciencing.com的 10 大竞争对手

livescience.com

The first vagina-on-a-chip replicates the cellular environment of the vagina.

brainly.com

Brainly is your AI Learning Companion that empowers students to thrive academically. Brainly creates responsive learning environment for students, parents, and teachers. Explore a world of questions and answers, test prep, and instant support from our AI Tutor, helping you learn smarter and do homework collaboratively for better grades.

bio.libretexts.org

The LibreTexts libraries collectively are a multi-institutional collaborative venture to develop the next generation of open-access texts to improve postsecondary education.

wikihow.com

You want to meet people, make friends, and share yourself with the world, but social interactions can be especially intimidating for people who struggle with social anxiety. While many people feel nervous before a presentation or speaking...

monticello.org

A database of information on all known enslaved individuals at Thomas Jefferson's plantations

studentsofhistory.com

An overview of the videos and resources we have for using a flipped classroom approach to your social studies lessons!

biologyinsights.com

Explore the environmental conditions and biological changes that cause solitary locusts to form vast, mobile swarms with significant ecological consequences.

edpuzzle.com

Easily create beautiful interactive video lessons for your students you can integrate right into your LMS. Track students' progress with hassle-free analytics as you flip your classroom!

ixl.com

IXL is the world's most popular subscription-based learning site for K–12. Used by over 17 million students, IXL provides personalized learning in more than 17,000 topics, covering math, language arts, science, social studies, and Spanish. Interactive questions, awards, and certificates keep kids motivated as they master skills.

unabridged.merriam-webster.com

merriam-webster's unabridged dictionary is the largest and most comprehensive dictionary available online or in print. join now for unlimited access to over 700000 definitions, uses, quotes, and more.