Thursday 23 November 2023
Polarisation Angles
Using the @Pascoscientific light sensor and rotation sensor to measure the light transmission compared to the polaroid disk's rotation angle. We could clearly see the sine wave produced as the disk went from complete transmission to virtually none and back.
Wednesday 22 November 2023
Calculator memory
Getting used to the new news of doing things on the new Casio calculator as more students use these.
Tuesday 21 November 2023
Superimposition of waves
Using a wave tank and slo-mo to try to capture the superimposition of waves. This has been the best way I have found so far to show that the waves increase as they pass through one another. But if you know a better way ...
Monday 20 November 2023
Photosynthesis
Having brought some pond weed in from the pond for a few days and given it some light, the plants performed well, giving off a stream of oxygen bubbles that could be counted and the oxygen tested for. We tried different light sources and different wavelengths using led bulbs.
Sunday 19 November 2023
Networking
Networking. Dusting off some 25-year-old PowerPoint. The Network slides have stayed the same in that time.
Saturday 18 November 2023
Measuring the River Flow
Friday 17 November 2023
Iodine in water and cyclohexane
First, Iodine was dissolved in water and a little dissolved, changing the colour, but much of the iodine remained solid. Then it was shaken with cyclohexane, and immediately, the water layer went clear as the iodine dissolved in the cyclohexane. After a while, more iodine dissolved in the water, turning it brown again.
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A level computing 12 Mark questions
Practice planning the 12-mark A-level computing questions. It is not just about getting the facts down but also about organizing them effect...
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Negative feedback is a difficult concept to try and get over so I tried using a balance board and the @pascoscientific smart cart strapped...
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Getting a classic set of results for the titration of NaOH and HCl is not that difficult but it is nice when we can get students to this ...
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Reactions with the different Alcohols to see the change in rate and water for comparison and why not to react with acids. An extra experime...