Summary Students make different shapes on the end of their pipecleaner (heart, square...) to try and make different shaped bubbles...but they all come out round! Science content Chemistry: States of Matter, Properties of Materials (K-7) Lessons activity is in Bubbles Materials Two pipecleaners per student Bubble mix Plate per student or tray for a pair Straw per student Pipecleaner/straw frame in a cube to blow square bubbles in Procedure Are bubbles always round? What happens if you make another shape with your pipecleaner? Make two shapes. (Optional: add straw for handle.) Blow and watch others in your group - look for bubbles that are not round. Let me know if you see one. Why are bubble always round? Show structure of a bubble (layer of water molecules trapped between two layers of soap molecules). The soap molecules can move around, so can the water molecules - they are elastic. They move until find most stable shape: for one bubble this is a sphere. Notes For winter 2011 science club (grades 1 and 2) we did this inside. Students sat around the perimeter of a large blanket and blew their bubbles into the centre of the blanket. Grades taught Gr K Gr 1 Gr 2 Gr 3 Gr 5
