by STAO ADMIN | Nov 13, 2019
This short student activity enables students to experience creating their own microscope slide and to practice using a microscope. The activity reinforces the necessity of finding and focussing on a sample under the microscope first under low power before increasing...
by STAO ADMIN | Nov 13, 2019
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...
by STAO ADMIN | Nov 13, 2019
This demo demonstrates the greenhouse effect by comparing the air temperature of a room with the air temperature inside a clear plastic bag containing black construction paper. The bag models the Earth’s atmosphere and the black construction paper models...
by STAO ADMIN | Nov 12, 2019
Cells require a constant supply of glucose and oxygen to produce energy. Cellular respiration occurs in the mitochondria of a cell. As a result of this process, large quantities of waste carbon dioxide must be expelled from the cell. All materials involved in this...
by STAO ADMIN | Nov 12, 2019
This demonstration is a great way for students to model the stages of mitosis. Images of the different stages in textbooks are static snapshots and many students have difficulty grasping the idea that mitosis happens as part of a continuous cycle.
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