3.0 Teaching Aids

3.0 Teaching aids

3.1 For higher achiever

Diagram 2.0 Graduated cylinder

A graduated cylinder is a suitable tool for calculating liquid volume. It is used to accurately measure out volumes of liquid reagents for use in reactions.They are generally more accurate and precise for this purpose than beakers or Erlenmeyer flasks, although not as precise as a volumetric flask or volumetric pipette. They come in a variety of sizes for different volumes, typically 10 ml, 25 ml, 50 ml, or 100 ml, 500ml, and up to 2 liters. 

Liquid in a container tends to curve at the edges. This curve is called the meniscus. Generally it curves down toward the center, but if there is an object in the cylinder, a straw for example, the liquid will curve up along the edges of that object. So it is important to set the cylinder so you sight along the top of the liquid. Take the reading from the center. which is the bottom of the curve. The smaller the volume of the cylinder the greater the curve will be.

For Year 2 student, using graduated cylinder is not that easy for them. They still need the guidance of the teacher while doing the  measuring task. I will choose this as my teaching aids for higher achiever student.

3.2 For lower achiever

Diagram 3.0  Kitchen Utilities 

I would like to use the household item as my teaching aids. There are easy get from the kitchen. For example, I will choose pot, mug, bowl and bottle etc. Kitchen utilities as my teaching aids. These aids do not need lots of preparation and allow pupils also can have such measurement activities at home. Besides, I will set up the utilities in three groups. Pan with bowl, glass and bottle, pot and mug. Arrange them two by two in order to let pupils easy to do comparison.