The Smiley Wheel Liquid Timers are really easy to use. Your child simply turns the Smiley Wheel Liquid Timer upside down and watches the colored bubbles simultaneously walk down the wheel staircase to the bottom of the tube. 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 years resource for younger children. This is a true visual sensory aid that captivates a child's mind Use it to teach colours or the concept of time These Liquid timers are a great calming down aid for children and adults A mesmerising beautiful display A fusion of colours 6 available colours A colourful cascade of drips and drops