Measurement is a strand in math that can be challenging for many students. Although children tend to think of measurement as including only linear measurement, it is important for them to understand that measurement also includes mass, capacity, volume, time and temperature. Students must also understand that we use different names for the standard units, depending on the type of measurement and know which tools used for each type of measurement. For example, we measure mass with a scale and the units we use are gram or kilograms.

Some of the important ideas in the measurement strand are:

1. Any object can be described using different measurements. For example we can say an Olympic speed skating race is 3km or 3000m.

2. It is useful to estimate a reasonable measurement. Sometimes an estimate is all you need, while sometimes it the estimate helps us to see if our actual measurement is realistic.

3. If you use a bigger unit to measure, you need fewer units. For example, if we measure in the area of a floor in square metres, the amount of metres will be smaller than if we measured it in square centimetres.

4. Using smaller units makes our measurements more precise.

Some of the important ideas in the measurement strand are:

1. Any object can be described using different measurements. For example we can say an Olympic speed skating race is 3km or 3000m.

2. It is useful to estimate a reasonable measurement. Sometimes an estimate is all you need, while sometimes it the estimate helps us to see if our actual measurement is realistic.

3. If you use a bigger unit to measure, you need fewer units. For example, if we measure in the area of a floor in square metres, the amount of metres will be smaller than if we measured it in square centimetres.

4. Using smaller units makes our measurements more precise.

## Grade 3Here are the Grade 3 learning goals:
…estimate, measure, and record length, height and distance with centimeters, meters and kilometers. …compare standard units of length and select and justify the most appropriate unit to measure length. … use a ruler to draw lines with specific centimeters. …measure and represent time to the nearest five minutes. …represent time in 12 hour notation (e.g., 1:23). …solve problems involving the relationships between minutes and hours, hours and days, days and weeks, weeks and years. …read a thermometer and record positive temperatures in degrees Celsius. …identify benchmarks for freezing, cold, cool, warm, hot and boiling temperatures as they relate to water and cool, cold, warm and hot as they relate to air. ...measure the perimeter of 2-d shapes in centimetres. …measure the area of objects using centimetre grid paper. …compare and order shapes by area …choose benchmarks for a kilogram and a litre. …measure and record the mass of objects in kilograms. …measure capacity of containers using litres. …compare and order a collection of objects using standard units of mass or capacity. |
## Grade 4Here are the Grade 4 learning goals:
…estimate, measure, and record length, height and distance with millimeters, centimeters, meters and kilometers. …describe the relationship between millimeters, centimeters, meters and kilometers. … use a ruler to draw lines with specific millimeters or centimeters. …measure and represent time to the nearest minute. …measure elapsed time in minutes, hours, days, week, months or years. …measure and record the perimeter and area of polygons (2-d shapes). ...compare 2-d shapes that have the same area and perimeter. …measure and record the mass of objects in kilograms and grams. …determine the relationship between grams and kilograms. …measure and record the capacity of containers in litres and millilitres. …determine the relationship between litres and millilitres. …measure and record volume. …compare and order a collection of objects using standard units of mass or capacity. |

Any opportunity you can take to have your child practice these skills in a real life context would help. For example, when cooking have students notice the capacity or the mass of the ingredients you are using. Trying to help them develop an awareness of benchmark units such as kilograms, grams, kilometres, litres, etc. is also very helpful.