During my PSLE Science revision class, ask 2 of my students to draw the graph of how the amount of gas in 2 containers will vary with time.

Both gave very similar answers. But only one of them is correct. 🙂

Have a look.

The graphs (drawn in red) are wrong. This is because the amount of oxygen or carbon dioxide is not zero at the beginning of the experiment.

Also, out of the 3 electrical circuits drawn on the right of the white board, can you arrange them in ascending order of lamp brightness?
The answer will be F, E, G.

The rest of my P5/P6 students ( who cant make it for the revision class and do not understand why), please let Mrs Chew in the next lesson. 🙂

This year, I only have one PSLE class as I cut down on my number of classes to have more time with my baby. 🙂
Most of my students are secondary teenagers this year. I miss teaching the younger ones lately and hence decided to post this blog entry on a Tuesday night after I put my baby to bed. 🙂