Math One: Find the Length Learning Outcomes Students will be expected to: 1. Measure the lengths of objects using the centimeter as the standard unit. Activity Have the children use a ball of string to show the length of newborn whales, a herring, a krill and other sea creatures. The teacher will need to record the name and size of each sea creature on the board, as a quick reference for the children. New born killer whale is _____ cm long.                Krill ____ cm                Herring ____ cm Assessment From the collection of finished products, ask individual students to explain how they went about their task.