Measuring and Adding Perimeter

Perimeter is the distance around a shape or an object. 

Our current focus in Math is Measurement and Addition Strategies. We have been looking at different forms of measurement (with both standard and non-standard units of measurement). Non-standard units of measurement can be any unit that helps you to measure such as popsicle sticks, chains, snap cubes, straws, etc. Standard units of measurement consist of measurements that are found on a ruler such as centimetres.

Over the past few days, we have used non-standard and standard units (centimetres) to measure the perimeter of shapes around our room. We define Perimeter as the distance around a shape or an object. When you measure perimeter, you need to measure each side of the shape. Then you need to add the sides together. It is also important to indicate what unit you are using. We focused on different counting strategies and adding strategies today. We used the Document Camera to demonstrate how Ten Frames can help us to add up the sides of the shape to come up with the perimeter. We shared some strategies that work for us. Some students are using scrap paper to write their math thinking to find the perimeter. Other students are using snap cubes to help them add up the sides of a shape to determine the perimeter. Excellent adding strategies grade 2! We will continue to talk about measurement after the March Break.

Over the March Break focus on some math homework with your child. Ask your child about what addition strategies they know well. Also, ask your child what strategy they can use to measure the perimeter of objects around your home such as a floor tile, a favourite book, a placement and a napkin! They can use a centimetre ruler or any non-standard unit of measurement! Have your child send the results to school when we are back at school on Monday March 17th.

Happy measuring!