How many somersaults can you do in 30 seconds? How long is a minute? Explore and learn more about time with hourglasses. Use the hourglasses to time limit work tasks or response time in games. The five hourglasses measure 30 seconds, 1 minute, 3 minutes, 5 minutes and 10 minutes. - Materials: ABS, PC, glass, colored sand - Height: 14.5 cm - Recommended age: 3+ - Accuracy: ±10%

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