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DIY Sun Science is a free iPad app from The Lawrence Hall of Science. The app features directions for hands-on lessons about the sun. The lessons are a mix of activities that students can do on their own and activities that they should do with adult supervision. All of the activities use common household goods. Some of the activities that you will find in DIY Sun Science are measuring the sun, making UV detectors, detecting solar storms, and cooking with a solar oven.

"This instructable will show you how to build a stand for about $10 that will transform your smartphone into a powerful digital microscope. This DIY conversion stand is more than capable of functioning in an actual laboratory setting. With magnification levels as high as 175x, plant cells and their nuclei are easily observed!  In addition to allowing the observation of cells, this setup also produces stunning macro photography."