Looking at data from experiments

One of the benefits of using computer sensors is that you can clearly see the changes that occur in your experiments. Here we show you the results that we obtained. Our results tell the 'story' of what happened in our investigations. We'd like you to study them.You might like to answer the questions about them. You might even like to tell us the answers! You might like to try some of the experiments suggested. If you can do what we did and get the same result we can't be too far wrong. Our message is that the graphs you obtain from experiments with sensors are rich in data. Compared to manual approaches, there is much to explain, much to query and new opportunities for learning to seize.

Sour milk - take a glass of milk and measure its pH
... will it gradually go acid?
Infra-red remote control signal
...where we pointed our sensor at a remote control
Coffee
...where we wondered whether to add the milk now or later
Keep warm 1 - Day and night
...where we measured the temperature indoors and outdoors for a day
Keep warm 2 - at home
... a nice project about the temperatures of model houses
Latent heat - salty ice lollies
...where we look at what salt does to the temperature of freezing water
Cooling - a cooling curve
...where we found a cooling liquid gave us a bumpy cooling graph.
Changing state - heating ice
...where we tested some houses to see which can keep us warmer.
Pendulums - and bobbing masses
...where we got the computer to 'watch' a pendulum swinging.
Rate and concentration
...where show how the concentration of chemicals affects the rate of a reaction.
Rate and temperature
...where show how the temperature affects the rate of a reaction.
Car on ramp - rolling down a slope
...where we rolled a toy car down a slope from different heights.
Freezing bun - Lawrence put a bun in the freezer
...where we put our sensors in a bread roll in the freezer!
Exothermic reaction - heat from Plaster of Paris
...where we mixed plaster with different amounts of water.
Compost heap - lead us to ask is mown grass really dead?
...where we mowed the lawn and watched the grass with our sensors
An aquarium
...where we looked to see if any was happening in our fish tank
A battery fit for the job
...where we compared two different types of battery you can buy