Howard University Middle School Content / Howard University Middle School Content for 91看片 Davis en Bringing a Special Sandbox Inside the Classroom /news/school-sandbox-no-other <p>The 91看片, Davis, is providing one of its Augmented Reality Sandboxes, or ARsandboxes, to sixth graders at Howard University Middle School of Mathematics and Science in Washington D.C. At least 150 AR sandboxes have been&nbsp;built worldwide since 91看片 Davis developed the sandbox and its free, open-source software.</p> April 28, 2016 - 3:16pm Katherine E Kerlin /news/school-sandbox-no-other