Colorful Acrylic Sand Timer - 1/2/3/5/10/15 Minute Hourglass for Games, Classroom, Home & Office (Large) | Perfect for Time Management, Board Games, Cooking, Meditation and Productivity Tools

I bought and used these with students who struggle with time management. They sit on there desk and know they must be finished when the sand runs out. No disruptionI thought these would be bigger but they will work. They don't need to be any bigger just thought they were different sizes.Fine sand clock and not expensiveBetter than expected. Great for toddlers learning about time.Super easy to use and very convenientIt is also quite sturdy. My son dropped it a few times and it didn't break.I got these for kids in class. Looks like they survive falls as I dropped two unpacking. Seem study colorful and pretty accurate. Hope to make them useful in timed presentations.I appreciate how the acrylic cylinder keeps the inside glass away from my kid's hands. It makes it less worrisome if he messes around with it. None of my set have broken within the last few weeks, although we only use them on carpeted areas.Discipline in a break proof colorful package.