Emf and ohm law experiments in the lab.

I was a little afraid that I would not see the day in Convent Sentul where every student can set up their own electrical circuit and take their personal individual readings of volmeter and ammeter without being aided by any one.

But today was the day the girls embarked on doing their electrical circuit for the first time in their life! Delightfully all 33 girls started doing their own experiment about 11.20 am and all completedthe experiment succesfully by 12.15 noon.

Sharmilla deep in concentration with her circuit.

Of course the preparations towards today's experiments were not as easy.


First the lab assistants had to be trained - thank God I managed to get Ibrahim my very competent ex- lab assistant from SMK Padang Tembak to come over to train our lab assitants for two days.

Now finally they managed to identify and locate long lost equipment such as the long rheostat etc etc, and prepare and repair whatever faulty equipment to make 15 sets of electrical circuits.


rb stands for red button and bb stands for black button and red lines indicate red wires connevted to the positive terminal of the battery and black lines represent black wires connected to the negative terminal of the battery.


I am happy to report the girls enjoyed the experiments and the first batch girls were able to confidently teach the 2nd batch girls to do the experiments.

There were some students I had to test to make they could do all on their own without any assistance and yes! Harkiren did it all by herself! Hallelujah! See the smile playing on Harkiren's lips as she sets up her own circuit.

Darshna sets up her own circuit under the watchful eyes of her two friends.

Rachael and Rinnisha grinning as they read their ammeters and voltmeters.

And lastly now to test you. What's the reading on the ammeter?

Essay question on waves Paper 2 Diagnostik 2011

Dear Phyics students,

I thought it appropriate to blog a bit about some of the answers apart from discussing in class so that you can still remember the discussion after the class.

I am personally very encouraged by the phenomenal improvement 5 A has shown in Paper 2. All except 4 students have shown great improvement eg the first 2 students alphabetically Aliah went from 12/100 in Paper 2 Intervensi Feb 2011 to 23/100 in Diagnostik Mei 2011 and Ammelya went from 27 to 50. Congrats! Most of you record about 50 - 100% improvment except for the 4 students. I pray and hope you will all continue to sustain the improvement but I see a lot of work on your Form 4 basic foundation needs to be done by both you and me.


To prompt your memory - the essay question 10c

My philosophy is you learn best from pictures. Look at the following pictures to gain ideas about the design of the hall, the furnishings and the sound and lighting systems as stipulated in the question.


See the parabolic shape of this ceiling to improve acoustic effect.

Note the many lamps on the ceiling and the parabolic shape of each lamp.

Note the red carpet on the floor to absorb the echo

Note again another view of the parabolic shape stage, the many parabolic lamps and trough lamps and the chair cushions to absorb echo.

Note again carpets, cushioned banner and cushion chairs to absorb echo and parabolic shape stage for acoustics and the two speakers at each extreme end so that a is big and x the distance between loud sounds( constructive interference) is small.









This pic is just for fun! Name these two paraoblic shape instruments. You saw them during the orchestra performance.

Finally the answer to part 10 d must be quite long as it is for 4 marks.

a few new links by an interesting young Physics teacher

Dear students,

You may find Mr Siew links to be interesting. He is a young Physics teacher with lots of potential and passion.

Physics form 4 - ticker timer versus ticker tape experiment

student centered learning

Enjoy

Puan Tan