Xylem and phloem tissues make up the “circulatory” system of a plant. The xylem tissues transport water from the roots to all of the other living tissues, while the phloem tissues transport sugars from the green tissues where photosynthesis occurs to non-green tissues such as flowers, seeds, and roots. Transpiration is the loss of water through open stomata in the leaf and the large leaf veins. This demonstration allows students to see the xylem tissues and observe the direction of the water flow. The pale colour of Napa cabbage makes it ideal for observation.
Categories: Lab/Student Activity
The students and teacher will go on a walk around the schoolyard/community to collect a variety of natural objects. A further collection of items from the classroom will augment this. The sorting... read more
Written by Nadia Kashif, Don Galbraith Award Winner 2019-20, Ontario Tech University In this learning activity students investigate the impacts of human actions on the quality of air and water and... read more
Categories: Teacher Demonstration
Most of us know from experience that the force of friction caused by air resistance increases as the relative speeds increases. The purpose of this activity is to develop a proportionality statement,... read more