Earth and Space
Properties and Changing of Materials
Last week we looked at different materials and thought about their properties. We discovered that materials are chosen for particular products and jobs because of their properties.
This week we started to think about special properties of materials. We investigated whether some solids were soluble or insoluble (dissolved or not).
We tested lots of different solids including gravy, rice and sugar.
Next, we thought about factors affecting dissolving. The children came up with lots of ideas such as temperature, number of stirs, speed of stirring and size of particles.
I demonstrated, with the help of the children, how temperature affected the rate of dissolving. We created a line graph of the results.
Circuits and Electricity
Children in Upper Key Stage 2 have learnt about several ideas relating to electricity this half term. They are able to draw simple circuit diagrams and label them. They are also aware of the history of the discovery of electricity, electric current and voltage.
This week the children conducted an experiment to explore the following question:
What effects do differing voltages have on a electrical component in a circuit?
The children tested how changing the voltage affected motors and bulbs in a complete circuit.
The children made predictions, collected results and formed conclusions.