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from WonderHowTo

How to Turn a Cardboard Box into a Cheap DIY Smartphone Projector

Turn a shoebox and magnifying glass into a smartphone projector. -- relates to the light topic at school - real vs virtual image

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Now you can have the luxury of a big screen movie in the palm of your hand! With a portable HD projector for your iPhone you can use your phone to project movies on screens up to 60 inches! The sky is limit; just plug and play your movies on any blank wall. Hang a bed sheet outside and turn your backyard into a theater this summer, making memories for your kids that will last a lifetime!

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