Technology Theme 5 transcription

1.Prepared by Khoa Anh Viet 1 TRANSCRIPTIONTRANSCRIPTION Prepared by Khoa Anh Viet, M.A. 2. Prepared by Khoa Anh Viet 2 Why is spelling so hard? • Blame the alphabet. You…

Documents The Recent Migration Slowdown and America’s Changing Regional Demographics

William H. Frey The Brookings Institution www.frey-demographer.org The Recent Migration Slowdown and Americaâs Changing Regional Demographics Source: William H. Frey analysis…

Documents Gardner-Adoquinados de Penrose

SCIENTIFIC ERIC THEORY OF TILES $1.50 �/977 © 1976 SCIENTIFIC AMERICAN, INC THE COVER The design on the cover is a non periodic tiling discovered by the British math­…