Mass

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 * [[image:mass.jpg align="left"]]

Students recognise the attribute of mass through indirect and direct comparisons, and use informal and metric units for measurement.
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=**Early Stage One** = ||
 * //**MES1.4: Compares the masses of two objects and describes mass using everyday language.**//


 * Key ideas:**
 * Identify and describe the attribute of mass.
 * Compare the masses of two objects by pushing, pulling or hefting or using an equal arm balance.
 * Record comparisons informally. ||

=Stage One = ||
 * //**MS1.4: Estimates, measures, compares and records the masses of two or more objects using informal units.**//


 * Key ideas:**
 * Estimate and measure the mass of an object using an equal arm balance and appropriate informal units.
 * Compare and order two or more objects according to mass.
 * Record measurements by referring to the number and types of informal units used. ||

=Stage Two = ||
 * //**MS2.4: Estimates, measures, compares and records masses using kilograms and grams.**//


 * Key ideas:**
 * Recognise the need for a formal unit to measure mass.
 * Estimate, measure, compare and record masses using kilograms and grams. ||

=**Stage Three** = ||
 * //**MS3.4: Selects and uses the appropriate unit and measuring device to find the mass of objects.**//


 * Key ideas:**
 * Select and use the appropriate unit and device to measure mass.
 * Recognise the need for tonnes.
 * Convert between kilograms and grams and between kilograms and tonnes.
 * Record mass using decimal notation to three decimal places. ||