Hand2Mind Advanced NumberLine Clock helps children calculate intervals of time and solve elapsed time problems using a clock frame and two detachable number line chains for AM and PM. By unfolding and snapping the chains together, kids can build a number line from a clock, learning to tell time and understand hour and minute relationships. The set includes a clock and activity guide for hands-on learning. Helps kids solve elapsed time problems and calculate intervals Includes 1 clock frame and 2 detachable number line chains (AM and PM) Gears maintain correct hour and minute relationships Learn to tell time using 3 styles of analog clocks Build a 24-hour number line with color-coding for AM and PM A must-have tool for teaching time in the classroom Designed for independent and guided learning