My perimeter was awesome. Also my strategies was adding. Perimeter is where you get to add up all the sides of a shape and today our shapes had to have a perimeter of 24 cm.  Make sure you design a shape that has sides that add up to the right perimeter. My design was an odd shape, but it is pretty cool.  It took a while to find the right shape that had a perimeter of 24 cm.  I used guess and check and adding.  Perimeter means to is to measure every side and add up the total.  That's what I know about perimeter.