Hi teachers,<br/><br/>1. It's a / an R - shaped foam board<br/><br/>2. It's a / an I-shaped foam board.<br/><br/>3. It's a / an E-shaped foam board.<br/><br/>4. It's a / an N-shaped foam board.<br/><br/>5. It's a / an 'O'<br/><br/>6. It's a / an 'S'<br/><br/>Thank you.<br/><br/>Tinanam