this gives students opportunities, too often in the old days were very algio rhythmic. they were procedural. that procedural knowledge sat inert with students and they weren't able to apply it. this gives them the opportunity to apply those mathematics in the use of data and in transformational geometry. this is a very rigorous curriculum but more carefully sequenced for everybody to succeed rather than what our current data shows. again, this is our recommendation. this is our best thinking and this involves months, over a year of working with experts in the field and our colleagues within the district around what is best for the students around san francisco around math education. thank you. >> thank you for that presentation. we have a lot of public speakers signed up for this. currently many of them are math teachers. who worked a really long hard day. so, you have 2 minutes to speak and i'm going to call out your name. lily lum, michael brit, nome zoek, an lion, andre marty, andre so lay, allow, david gardener, tasha sue, you are right. please come up to the podium