You simply turn them upside down and watch the two differently coloured bubbles simultaneously walk down the staircase to the bottom of the tube. The liquid timer takes approx 1 min to run through. Please note these timers are for sensory calming and not for accurate time management.
The action of the liquid showers can stimulate visual learning with regards to colours and the passing of time. This sensory activity is praised as a fun and stimulating early year resource for younger children.
Size: One timer: 7 cm.
Pack size: 4 Timers
Usage: Visual effects
Weight: Approx.: 100 g.