Ms. Ramirez's 4th grade students make posters talk using Makey Makey and Scratch.  Quarterly we review our Science standards by making posters talk.  The students choose a 4th-grade standard we've learned.  They make posters, writing information on the posters as well as drawings, coloring, etc.  After they have made their posters they go to mit.edu scratch and program their posters.  Using their written information on the posters they record their voices.  Finally, they use Makey Makey attaching alligator clips and complete the circuit enabling the poster to "talk".  Makey Makey was developed by MIT students.