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CONTINUED ON PAGE 48. T E C H N O L O G Y Inside Looking Out I f you visit Chicago, you must see Millennium Park, an outdoor space that showcases sculpture and cultural events. One of its attractions is the Crown Fountain, an interactive work of public art and video sculpture designed by Jaume Plensa. Visitors stand between two glass brick towers and watch video projections of fifty-foot faces from seventy-five different ethnic, social, and religious backgrounds move, blink, smile, and appear to spout water from their mouths, while chil - dren play in the puddles below. Since I am fortunate to teach close to Chicago, I take my students there for an annual field trip. I developed an interactive digital lesson based on Crown Fountain to increase students' awareness of public sculpture while introducing them to the magic of one of my favorite apps, Green Screen by Do Ink. In this lesson, students watch a behind-the-scenes video about the fountain (See Web Links), then use iPads to put their own faces in one of the towers as a still or video. Working with Digital Images With Green Screen, you can easily layer up to three videos, stills, or live feeds from the iPad's camera into a timeline. There are several other green screen apps for one to utilize as well, including Green Screen Movie FX and Hands-On Green Screen Movie Effects. With this in mind, I created a couple of Crown Fountain templates with an empty and trans- parent space that can be replaced with students' faces to appear as if they are featured on the tower. All you have to do is place the template on a top layer and use the live feed from your iPad camera on a layer below. Students can take a still image of their face in the Crown Fountain or record video with audio as if interacting with visi- tors through the sculp- ture. How would they react to the children playing in the water below? What might the fountain say if it could speak? What if the faces could change as the seasons change? Any photo with a transparent portion (saved as a .png file) can be made interac- tive instantly with this technique. I make templates for les- sons like this by using the iPad app, Superimpose. Additional image layer- ing apps include Layrs and Juxtaposer. Layering Images The Superimpose app is designed to layer two images, but for this proj- ect, I ignore the back layer and only save the foreground. I use the double square button in the top-left corner to get started. I choose a simple contrast- ing color for the background, then use the same double square button again to bring in the foreground image that I want to create a transparent space within from the camera roll. At the bottom of the screen I choose the "mask" tab to access the tools to erase the area of the image that will be replaced with students' faces. You'll find tools that select color fields, erase, replace, lasso, gradually fade, and more. Tricia Fuglestad I developed an interactive digital lesson based on Chicago's Crown Fountain to increase their awareness of public sculpture. John, grade four. 16 APRIL 2016 SchoolArts