WELCOME TO THE FAMILY: IXL has released science and social studies content for grades two through five onto its adaptive learning platform, adding to a suite of subjects that also includes math and English language arts. The science curriculum will make use of interactive activities and diagrams to explain concepts from the natural sciences, physics and chemistry, among others. The social studies curriculum asks students to engage with primary sources. The company announced the new content at ISTE and via press release. The company claims to be used by one in 10 US students and 200,000 teachers worldwide.