mbs04_DIY+Timers

Lifelong Learning Home Page Page 2 **It’s about time!** Build a timer to make a noise after a specific time interval of 1-3 mins. You will need to specify what interval you have chosen for your timer. You do not have to stay with plastic bottles and water. Use any materials you want, e.g. sand, candles, marbles etc.
 * Design brief**

1. No ready-made device is used. 2. Accurate measure of chosen time interval. 3. The noise made is loud enough to be heard in the classroom.
 * Success criteria**