Study and test knowledge of the 20 standard acids through customizable quizzes. Topics include names, structural formulas, 1-letter and 3-letter codes, codons, and side chain classes. Quizzes are available for free. Remove ads with an in- purchase.
Read daily verses from all books, Psalms, and Gospels. Access multiple translations including English, Spanish, French, and others. Follow canonical, historical, or chronological reading plans for one year, 180 days, or 90 days.
With interactive lessons featuring native speaker audio. Practice listening, speaking, and writing. Complete short, daily lessons designed for quick integration into your routine. Track progress and engage with a community of learners.
Learn up to 14 languages with options for English, Chinese, Korean, Russian, German, French, and Spanish. Choose from three skill levels. Personalize learning with custom word lists. Practice vocabulary through interactive lessons and quizzes.
Listen to native phrases and practice pronunciation
Common phrases through native speaker recordings. Listen to daily conversations and practice pronunciation. Translate between languages. Access offline audio content. Use for travel or business communication.
Stream award-winning movies and series on-demand from any device. Watch live content and browse upcoming titles. Create custom playlists of favorite shows and films.
Explore exhibits from home with expert commentaries
Access expert commentaries on over 250 highlight objects. View 65 gallery introductions with , video, text, and images. Explore self-guided tours of the . Purchase or use headphones for content.
Grammar through 69 lessons and exercises. Track progress with self-evaluation. Take notes per lesson. Access vocabulary resources. Complete exercises for practice.
Manage a village by planting crops, raising animals, and building structures. Trade resources with friends, upgrade buildings, and complete tasks to improve productivity. Customize layouts and unlock new items through progression.
Explore galleries with guided tours in 12 languages, including American Sign Language. Access audio described tours for visual impairments. Learn facts about life. Navigate exhibits at your own pace. Retrieve exhibit details and multimedia content.