100 Elapsed time questions! Master elapsed time with this set of 50 funny, double-sided cards featuring 100 questions in increments of 1 hour, half hour, quarter hour, 5 minutes, and 1 minute! Use with the Hot Dots pen for a fun and interactive way to practice elapsed time. Grades 2+/Ages 7+ The nitty-gritty:; 50 Double-sided, fully illustrated cards (3.5 x 5 Inches); 100 Grade-level elapsed time problems; For use with Hot Dots pen