Music: Avance
Avance, a 13-piece salsa ensemble, features four bilingual singers, a horn section and a rhythm section. They will play tomorrow, Aug. 3, from 6-8 p.m. at Courthouse Square, 2200 Broadway St., Redwood City. Go to redwoodcity.org.

Tech: Stanford EdTech Expo
The Stanford EdTech Expo is an annual expo by Stanford's learning, design and technology master's program. Students will demonstrate projects aimed at driving learning, from games and "creative footwear" to tools and web-based collaborative environments. The event is tomorrow, Aug. 3, from 4 to 6:30 p.m. at the Center for Educational Research at Stanford, 520 Galvez Mall. Go to ed.stanford.edu.

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