Misconception on capacity may arise among the students while teaching Volume of liquid especially when comparing capacity of two containers that can hold more. Students often make the comparison on height rather than its capacity. Find ONE (1) video in the internet that show how volume of liquid are measured. Create TWO (2) teaching aids that can be applied to Year Two students to help them understand better. Based on your teaching aids, you are required to create TWO (2) teaching activities; each for high achiever and low achiever students. Finally, you are required to develop your own blog and post the video, teaching aid and teaching activities in your blog. You are free to choose any platform that are available in the internet. For reference you may browse at http://www.blogger.com/ on developing your blog. You are only required to submit link to your blog.
Capacity of liquids can be measured by using non standard units (more or less) and in standard units in millimeters (ml) and liters (l) in the metric system. Investigations amount of liquids which can be poured between containers of different shapes and sizes. Exploration of capacity or volume of liquid involves manipulation of containers of various sizes that may either be collected or purchased for classroom activities. A cheap way to do the activities is to have your students collect some containers such as mineral water bottles, soft drink cans, vases etc which can be found around them. I The graduated cylinder or a buret are use to measuring liquid of volume in standard units. However, with the right tools and the right knowledge, it is easy to guide pupils to find the volume of liquids.
2.0 Two teaching aids
Volume is the amount of space something takes up. Finding the volume of a liquid, you need to pour the liquid into a measuring tool that is set up to measure the volume. However, with the right tools and the right knowledge, it's easy to find liquid volume.
When teaching volume of liquid, teaching aids are important tools to apply in the teaching activities to help pupils to understand and learn effectively. Therefore When I teaching volume of liquid for years two pupils, I create two type of teaching aids to help them understand better. It is a standard measurement tools and non-standard measurement tools.
I used non-standard measurement tools as a teaching aids, like different sized of drinking bottle, various small plastic containers of different sizes and a large water jug as a teaching aids to teach year two pupils about the volume of liquids. It is because these types of teaching aids readily available, low cost, safely to use , related to daily life and suitable for all levels of students. Moreover it is also a transparent plastic tool so that I can teach and the pupils can learn more effectively. I will use the color liquid to facilitate the pupils to see, understand and to do comparison among the volume of liquid in same or different sizes of containers. Because of pupils have very little idea of capacity. While perceptual comparisons made between two different containers ( taller and shorter ) their always said the taller container hold more even if the shorter one actually holds more. In teaching direct comparisons. At first I will use variety of containers, guide pupils to fill one and pour into the other to see which hold more. Begining of the aktivities , pupils should be encouraged to estimate. Initially these estimates may be no more than guesses, but estimating involves the students in developing a sense of the size of the unit. As everyday life involves estimating at least as frequently as finding exact measures, the skill of estimating is important.
Although non-standard units reinforce most of the basic measuring principles, students need to realize that they are limited as a means of communication. This can be highlighted through activities that involve the students measuring the volume of an object using different sized cups.
Beside of non-standard measurement tools, I also used standard measurements tools as a teaching aids , like a graduated cylinder and beaker to teach pupils to measure the capacity of liquids. Graduated cylinders are made of either plastic (polypropylene) or glass. Sometimes they are also made from other materials, such as borosilicate. It may be as small as 10 ml in height or as large as 1000 ml. As the cylinder's measurements increase, so does the width of the opening at the top of the cylinder. Always place the graduated cylinder on a flat, level surface, such as a lab table or countertop. Pour the liquid you want to measure into the graduated cylinder. After that look at the horizontal center of the meniscus--the curved line formed by the surface of the liquid in a graduated cylinder--at eye level to read the volume of your liquid. For example,When measuring the volume of a liquid show as below, always read the scale from the bottom of the meniscus. The meniscus is the curved surface of a liquid in a narrow cylindrical container.
When reading a scale, always strive to avoid parallax errors. Parallax errors arise when a meniscus or needle is viewed from an angle rather than from straight-on at eye level.Lastly double check the measurement for accuracy and record your findings labeled with the appropriate scale of measurement, such as "ml & l."
2 types of teaching aids - measure volume of liquid
Teaching aids :: non-standard measurement tools for measure volume of liquid
Teaching aids :: standard measurement tools for measure volume of liquid
3.0 Two Teaching Activities
3.1 Teaching Activity 1 for low achiever students
Learning outcome:
Ø To comparing capacity of a plastic bottle and a containers.
Ø To make a perceptual comparison of capacity
Materials:
• Three similar size of plastic bottles with different volume of color liquid
• Cards label with vocabulary. ( full , half full and empty )
• Working sheets 1
Procedures:
. Empty . Full . Half Full
1. Teacher shows three bottles with different volume of water and asked the students what are the similarities and differences between the three plastic bottles.
(expected answer : similar sizes of bottles , volume in the bottles are different)
2. Teacher show the vocabulary cards and introduce the vocabulary of empty , half full and full.
3. As teacher introduce the vocabulary of empty , half full and full. Ask pupils come out to label the bottles accordingly. (put the vocabulary cards infrond of the bottles)
4. Teacher guide pupils to read and understand the vocabulary. ( Full , half full and empty )
5. Divide the class into groups of two students and have them work in their cooperative groups.
7. Teacher discusses the answer with the student.
3.2 Teaching Activity 2 ( high achiever students)
Learning outcome:
Ø To compare volumes of liquid between two containers
Ø To measure volume of containers using non-standard units
Ø To compare volume of liquid using standard measurements.
Materials:
• A plastic bottle
• A plastic mug
• A graduated cylinder
• Working sheets 2
Procedures:
1. Teacher shows two different containers (bottle and mug), which is equipped with different amount of water. Ask students to guess which bottle hold more water and give the reasons.
2. How to prove their view is correct? And why think so. (Teachers may be appropriate to suggest earlier study on water features, such as would flow, has weight, volume, etc)
3. students discuss the measurement methods
Preset 1: Students may suggest that use the cup with a scale, teachers need to ask: What is the scale on the cup to use? If there is no graduated cup, how to do?
Preset 2: Some students may suggest to use variety of containers to fill one and pour it into the other to see which holds more.
4. Teacher demonstrates the way to measure the volumes of liquid using non-standard units. (as below)
5. Teacher ask question : Bottle A can hold ___________cup of water.Mug B can hold ___________ cup of water. The _________hold more water then
6. Teacher let pupils know that to measure the volume of liquid we must use the graduated cylinder to get the scale of liquid in milliliter(ml) and litre( l )
7. Teacher introduces the correct way to use graduated cylinder to measure the volume and get the capacity of volume. (as show below)
1 litre = 1000millilitre
8. Teacher demonstrate how to use graduated cylinder to measure the volume in container A as show below.
Result : Container A can hold 3 litres of water
9. Divide the class into groups of two students and have them work in their cooperative groups.
will be given to complete it.
11. After finish, teacher will discuss the answer with the pupils.
4.0 Conclusion;
Both of the activities as above are very interested. The first activity able to help pupils to make a perceptual comparison of capacity and understanding the vocabulary effectively. By the teaching activity 1 for low achiever students. Pupils had learnt how to compare objects : full, half full and empty and to make a perceptual comparison of capacity.
For the second activities ( for high achiever students ) pupils will bear in mind that how the volume of liquid will be measure by using beaker and cylinder. The capacity are measure in standard unit. ( litre and millimeters ) Pupils had learn how to used Graduated cylinder and beaker to measure the volume of liquids. They will know that, the more bigger containers the more quantities volume of water are inside. Short saying, the learning activities help pupils to accelerate the achievement of objectives..
5.0 Bibliography
Text book - HBMT 2130 Teaching Mathematics in year two
answers.yahoo.com/question/index?qid=20071216164547AAHOTcr
www.teachervision.fen.com/measurement/laboratory...
