TEACHER APPRECIATION DAY just happened to coincide this year with Cinco de Mayo. Across the US, folks are expressing thanks in different ways. US Chief Data Scientist DJ Patil thanked his high school physics teacher on the White House blog. Retail and fast-food chains are offering discounts and free chicken sandwiches. News Corporation funded 147 DonorsChoose.org technology projects, including every one in Santa Clara, San Jose, San Mateo and Alameda counties in California, worth a total of $215,054. Educents and fellow Imagine K12 graduate, Peekapak teamed up to offer teachers a gift basket of lesson plans.