Articles from October 2020

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PSLE question_energy_2018_Q35
Oct 13, 2020
PSLE question_energy_2018_Q35

PSLE question_energy_2018_Q35 asked a question which everyone experiences in real life. In spite of that, it is difficult to explain.

Many students may not be able to visualise the effect of having less mass (load) on the train and having a train moving up a slope.

A battery operated car is used to for the experiment.

Magnetic circuit card set
Oct 09, 2020
Magnetic circuit card set

The other day I was tasked to relief a Primary 5 electricity lesson on circuit card. To get over the trouble of preparing many circuir cards and after that have to disinfect them, i created a magnetic circuit card set. During the lesson i asked students to set questions for the whole class. The lesson was effective and efficient.

Difference between series and parallel circuit
Oct 08, 2020
Difference between series and parallel circuit

Difference between series and parallel circuit is very easy to show if you have the right equipment. The Series and parallel electrical circuit demo is able to show (1) the difference in brightness, (2) the independence of the parallel circuit.

Gravitational Potential Energy Experiment Set
Oct 06, 2020
Gravitational Potential Energy Experiment Set

Gravitational potential energy experiment set allows students to investigate how mass and height affect the gravitational potential energy of the object.

PSLE question_Energy_Q22
Oct 03, 2020
PSLE question_Energy_Q22

This is an energy related question. When the balloon is totally deflated, it does not stop immediately. The elastic potential energy of the balloon converts totally to kinetic energy of car at position L. The car converts all its kinetic energy to heat and sound energy from L to M.

PSLE question_Force_2019 Q38
Oct 03, 2020
PSLE question_Force_2019 Q38

PSLE question_Force_2019 Q38 is difficult for the students to visualise especially when the attraction force in involved.

Many students cannot understand that the whee an attraction force is acting on a magnet which is placed on an electronic balance, the total force acting on the electronic balance decreases and hence the reading on the balance decreases.

PSLE question_Electricity_2018 Q38
Oct 02, 2020
PSLE question_Electricity_2018 Q38

PSLE 2018 Question 38 presents a practical 2-way switch which is commonly found at homes. This type of circuit is not usual in PSLE. Most students do not understand the 2-way switch circuit and the absent of a battery also post a problem to the candidates. We created an exact 2-way switch circuit here hopefully it is useful for the science teachers to show and explain.

PSLE question_Energy_2017 Q38
Oct 02, 2020
PSLE question_Energy_2017 Q38

PSLE 2017 Question 37 is not too difficult to answer but difficult to understand. The equipment sited in the question is difficult to visualise how it works.

We made a model to illustrate how it works. Hopefully is useful to the science teachers for them to explain.