by STAO ADMIN | Nov 14, 2019
This demonstration will provide students with a visual representation of the structure of DNA. Students will learn the different components that make a nucleotide, the correct base-pair connection between nitrogenous bases, and visually see the double helix structure...
by STAO ADMIN | Nov 13, 2019
The distinction between diffusion and osmosis is not clear to many students. Observing coloured particles (such as food dye) diffuse in water shows direct evidence of diffusion, but the movement of water particles is not so easily observed. This demonstration prepares...
by STAO ADMIN | Nov 13, 2019
This demonstration shows that the combination of yeast, sugar and water will produce a gas that can be collected. This provides students with an opportunity to draw on prior knowledge to identify the cellular process involved. Students also have a chance to predict...
by STAO ADMIN | Nov 13, 2019
Osmosis is the process by which the concentrations of two solutions, separated by a selectively permeable membrane, equalize by the movement of a solvent such as water. This demonstration shows that the ability of plant cells to absorb water is decreased by heating....
by STAO ADMIN | Nov 13, 2019
This demonstration shows how water can affect the growth of bread mould.
Recent Comments