Timbuktu is an iPad magazine for kids (www.timbuktu.me). The magazine is a good tool to use within a classroom because it lets kids discover about our world and the current events. There are a lot of activities to do in class within "The News of the Week" stories. These may include stories about scientists and spelling or math games. All contents are aligned to Common Core Standards. This app costs $4.99 per month, or $29.99 per year for one subscription.