Wednesday, March 16, 2011

the demonstration

we have a lot of methods that we can use to teach our student in school science class. For instance lecture method, discussion method, role play, field trip and demonstration. sometimes for one topic we can use as much as possible method to deliver the topic to the student. this is important so student not get boring as we only stick in one method every time we teach science. sometimes for example lecture method is good to use in teaching one topic but for another topic it maybe not work. so, we as a teacher must be good in choosing and planning the suitable method to use in class.

so, for last week presentation, my group has been assigned to discuss and present about demonstration method. i found this method really interesting and useful in teaching science. it can give concrete experience to student as they see teacher do the demonstration about certain concept and not just depending on memorizing the concept. here, student can relate the concept with real life situation so the learning become more meaningful.


but, as we realize, each method have it strength and weaknesses. for demonstration method, teacher have to be careful with the visibility that might occur during demonstration especially when it involve large number of student, maybe half of it won't pay attention and maybe they can miss the point. so, teacher has to ready with good questions that can bring the student back to the demonstration and initiate their thinking about what actually the teacher want to tell them. teacher also must be expert with the demonstration mean they have to try it first. make sure the demonstration work.

Monday, March 7, 2011

Make Your Own Recycled Paper

original resource: http://www.make-stuff.com/recycling/paper.html


Don't throw away your old newspapers. Try making your own recycled paper! Recycled paper can be made from old newspaper, following the instructions below. Recycling paper uses cellulose (plant fibers) over and over again, it uses less electricity, less water, a lot less pollution, and it saves trees from being cut down!
You will need:
  • a food processor or an old blender
  • an electric iron
  • an old wire hanger
  • an old pair of panty hose
  • newspaper or other paper, torn into 2-inch squares
  • white glue
  • water
  • an insect screen or strainer (optional)
  • food coloring (optional)
  • a big sink or tub filled with 4 inches of water
Make sure you have a place to work where you can make a big mess!

Step One:
Make a frame out of the coat hanger. You'll need a frame for each piece of paper you make. Stretch the hanger and bend it into a rectangle/square shape. Take one leg of the panty hose and stretch it carefully over the hanger frame. Make sure it is tight and flat.

Step Two:
Put a handful of the torn up paper and some water into the food processor or blender. Blend the mixture on high until it becomes mushy. Keep adding paper and water until you have a big gray blob. You may have to add a little more water to keep things moving smoothly. Keep the food processor on until all the paper has disappeared. Then leave it on for 2 minutes.
For some color, add a handful of brown or red onion skin (not the onion itself, just the papery outer skin).

Step Three:
Put 2 tablespoons of white glue in the sink water and add all of the paper pulp you just made. Mix it really well. Use your hands.

Step Four:
Scoop the frame to the bottom of the sink, then lift it slowly. (Count to 20 slowly while you are lifting.) Let the water drain out for about a minute.

Step Five:
Hang the frames on a clothesline or put them out in the sun. Wait until they are completely dry with no dampness at all. You can then gently peel off the paper.

Step Six:
Use the iron, set on the hottest setting, to steam out your paper. You can keep making paper until the pulp is all strained out of the sink. Mix up the sink every time you make a new piece.
Try other things like using in insect screen over a wood frame, or a strainer instead of the pantyhose and hanger. Try adding lots of food coloring, for colored paper, or try adding lint or leaves to the food processor. Your paper will have an interesting texture.

Making your own paper can be fun, and it's a great way to re-use old paper. You can recycle all kinds of paper for re-use. Sometimes paper printed from color-inkjet printers will run, that is, the color will bleed off and become part of your new paper, but that can make for an interesting effect!

jum try!! hehe..;)

hectic week!

waa...long time no see..hehe..
i've been quite busy lately..didn't have time to post anything here..
and also i dont have much thing to share about my science method class since we are busy with our experiments..
actually im a lil frustrated about the experiments because i dont think that we, the form 5 group..have much options to choose in doing the experiment..the experiments available in syllabus quite boring and a bit difficult to modify..they were static! we can't do much about it..maybe we can just change one to two things on it..

but thanks Allah, so far we manage to do it well and tomorrow we'll present our experiment and discrepant event..
hope everything will be ok..
and after this we gonna busy with our last assignment which is microteaching..
i dont have partner yet..so who need partner,ask me for it..huhu..~