This Math Coach shares her solution to teaching ELAPSED TIME as students, who once struggled to model ELAPSED TIME, use manipulatives called Time Pieces (TM) on a Time Line called a Math Track (TM).Johnny's Key Johnny's Keys Johnnys Key Johnnys Keys Johny's Key Johny's Keys Johnys Key Johnys Keys Johnney's Key Johnney's Keys Johnneys Key Johnneys Keys Jonny's Key Jonny's Keys Jonnys Key Jonnys Keys Joney's Key Joney's Keys Joneys Key Joneys Keys Johnie's Key Johnie's Keys Johnies K