Curiosity - Where does oxygen come from?

is the world’s smartest learning program for 3-10 year olds! Skoolbo is trusted by over 100,000 teachers as the program they choose to use with their students and their own families. In fact, together their students have answered over 1.5 billion problems! The Skoolbo Learning Algorithm crafts the perfect program for each child. The Daily Challenge draws from the thousands of learning activities to give just the right mix of new concepts along with revision. Smart reports help highlight areas coming up which their child may be likely to have difficulty with and suggest great ways parents can help. The Skoolbo Voice Analyzer decodes what children are saying when reading or completing speech and vocabulary activities. Skoolbo includes hundreds of step-by-step lessons designed to make concepts easy to understand. Skoolbo contains thousands of activities on Reading, Writing, Vocabulary, Math, Science, Geography, Music, Art, Spanish, Chinese Mandarin, as well as a course on how Money works in