Students develop number sense by estimating appropriate measurements for common objects and events. They learn to choose between units (grams vs kilograms, milliliters vs liters, centimeters vs meters vs kilometers, minutes vs hours vs days) and make reasonable estimates. For example, a laptop weighs about 3 kg (not 300 g), and a water bottle holds about 500 mL (not 500 L).
Students develop number sense by estimating appropriate measurements for common objects and events. They learn to choose between units (grams vs kilograms, milliliters vs liters, centimeters vs meters vs kilometers, minutes vs hours vs days) and make reasonable estimates. For example, a laptop weighs about 3 kg (not 300 g), and a water bottle holds about 500 mL (not 500 L).