Accuracy

How thick is the book? The students got out their rulers with vastly different answers then they tried the callipers and micrometers to get a better value - looking at accuracy and significant figures that someone can read to and why you might need it. #iteachphysics

Exam Questions

 Its that time of year to practise exam technique to improve the answers, structuring those long 6 mark GCSE questions. #Iteachphysics

Titrations

 Attempting Titrations and titration calculations. I like using Phenolphthalein because I can see the colour change whereas I can't see the colour change using Methyl Orange due to colour blindness. #iteachchemistry

Fresnel Lens

 Looking into how a Fresnel lens works. How do the ridges manage to magnify and give a clear image? #iteachphysics

Making a Salt for an Acid and Base

Copper Sulfate  creation with the water bath for improved safety. Using the water bath stops the students heating the acid up too much and reduces the hazards.

 

Refraction

 Using a @pascoscientific light source in daylight to do a refraction experiment. It was bright enough to work and work well.

Water Purification

Taking dirty pond water and getting out crystal clean water ready to be chlorinated to be safe to drink. The Students set up up a range of different filters in the correct order to get out as much fresh water as possible.