Science Before Half Term: Pressure, Photosynthesis and Heart Health

As we enjoy the half-term break, here’s a look back at last week’s science learning at Lord Gowthorpe’s. From investigating pressure on tiptoes to exploring photosynthesis and the circulatory system, pupils put their scientific knowledge into practice through experiments, calculations and discussion.

KS3: investigating pressure in solids

Our KS3 pupils investigated how the area of a surface affects pressure. They used a newton scale to measure force, then stood on grid paper to estimate the contact area of their feet.

Using these measurements, pupils calculated pressure by dividing force by area. They then repeated the process while standing on tiptoes, reducing the area in contact with the floor.

Comparing the two calculations helped pupils explore the relationship between force, area and pressure: with the same force acting over a smaller area, the pressure increases. It was a practical way to connect a scientific equation with something pupils could experience for themselves.

KS3: looking for evidence of photosynthesis

Pupils also tested leaves for starch as part of their work on photosynthesis. The practical gave them an opportunity to look for evidence that photosynthesis had taken place, linking their classroom learning with an investigation using real leaves.

Using iodine solution to test for starch helped bring this process to life. Alongside their work on pressure, pupils practised making observations and using practical evidence to support their scientific understanding.

iGCSE: blood, blood vessels and heart health

In iGCSE science, students learned about arteries, veins and capillaries, alongside the different components of blood. They also explored heart disease and considered how diet and exercise can help reduce the risk of coronary heart disease.

Students investigated how exercise intensity affects pulse rate. By comparing their measurements across activities, they concluded that pulse rate increased as the intensity of exercise increased.

This investigation connected their learning about the circulatory system with changes they could measure in their own bodies. Students were also able to identify several ways to reduce the risk of coronary heart disease, particularly through choices relating to diet and exercise.

Growing confidence with exam questions

Exam question practice and feedback are becoming a regular part of every iGCSE science lesson. Students are using these opportunities to apply their knowledge, review their answers and build confidence in explaining scientific ideas.

Their books show the range of work involved, from recording pulse-rate measurements to interpreting information and responding to feedback. It has been encouraging to see students becoming increasingly confident in applying what they have learned.

Well done to our KS3 and iGCSE scientists for their practical work, thoughtful investigations and growing confidence during the final week before half term!