Mk2 Circle to Sine Wave

 Making sense of CAST diagrams - how the circle maps onto a sinewave using some @Lego to help. Using an offset wheel to produce a sinewave as the wheel rotates, then showing the same on the @Casio GG50 calculator.

More fun than Hookes Law

A bit more fun than Hookes Law, using the @Lascells Strip Tester to find the stretch and then the breaking point of carrier bags. Which company sold the most robust bags? Even tried out a vintage Woolworths bag.

 

Air Pollution Topic

Biology Air Pollution Topic Practical Measuring the Air Pollution levels using the @Pocketlab Air recording the levels of particulates in different sites gives a series of horror stories relating to the air we breathe.

Punched Card

 Students ask me what sort of computer I used when I was at school. I didn't because only when I went to University did they have one, and then it was run-off punched cards learning Fortran, Algol 68 and Coral 66, and the computer took up the top floor of the Uni.

The Nature of Light

Red and Green Make Yellow. In years 10-11 this is the first time many students have mixed light and become aware of how light is different to paint. And that the sun produces white light broken into a spectrum rather than a yellow sun they got taught in primary school.

 

Balancing ionic Equations using Ionic cards

Balancing ionic Equations using Ionic cards. Using the Visualiser on the desk to take images and place them into the electronic book to record the results.

 

Simple Harmonic Motion

 A spring and a mass using @pascoscientific ultrasonic motion sensor is an excellent introduction to Simple Harmonic Motion. Within seconds, we had Position, Velocity and Acceleration graphs to compare the motion of the spring, and then, including a force meter, we could capture all the info.