Hard Disk

Exploring how a hard disk works. Looking into the formatting and why a disk loses so much space on formatting and how this is used to access all the data.
 

alloys

 Ask a student for a magnetic metal and its iron. But get some coins out, and some are magnetic, and some are not, and they don't contain iron. 20p coins look the same but have different properties. Properties changed with different issues.

Metre Stick

 Seeing Lenz's Law with a magnet slowly sliding down on the outside of the @pascoscientific Metre Stick gives another insight to how this experiment works. We compared the rate to a 1p sliding down to measure the difference.

Parametric Graphing

 Using the @casio CG-50 calculator to sketch parametric functions. These are pretty hard to visualise but the calculator makes this a dream to do.

Coulombs Law

Measure the charge on two polystyrene balls with a coulomb meter, then bring them together and measure the change in force on the balance. The students had seen like charges repelling before, but this was the first time they had been able to measure this.

 

Vortex Mixer

 

Dissolving foods in water can be extremely difficult, and then it is hard for the students to get an accurate answer. Using a vortex mixer makes the food easier to dissolve and gives more accurate results.

Explain

 There are many key and command words found in the exam questions for all boards and all subjects. Teaching the students what to do with each keyword is vital to help them get full marks.