Description
| ISBN: | 9780077150631 |
| CSI Chapters: | Purple - Year 6(Grade 5) |
| Subject: | Social Studies |
| Text Type/Format: | Non Fiction/Paperback |
| Who Knew? is a book about the origins of some every day objects. Students will find out what you could buy from the very first vending machine, how many songs the first MP3 player held, and how long ago the first car accident happened. |