Last month, sixth graders Ethan Hao, Randy Hui and Terry Zhu, and fifth graders Isabella Du, Richard Li and Aixuan Sun, took first place at a First Lego League Northern California Qualifier event held at Piedmont Middle School. Known collectively as Tierra Bots, the team scored 360 points, and presented an innovation project for a robot that specializes in cleaning solar panels. The team plans to enter the regional competition in February.