The resources in BT STEM Crew can be used either in sequence or flexibly as an introduction to a topic, or for a quick activity.
Introduce the topic of mechanisms with a short starter film, discussing how levers, pulleys, gears and hydralics are used to steer the boat. Test students' knowledge with an engaging interactive. Our differentiated worksheets reinforce learning objectives for this topic.
See how much your students know about force, area and pressure to understand how the Land Rover BAR team analyse the boat hydraulics to maximise their performance.
Test students' learning with these differentiated worksheets.
Students carry out a practical investigation into pressure and hydraulic systems, by looking at real mechanisms and performing calculations.
To introduce the topic you could have a pair of tools to show students, such as embroidery scissors and kitchen scissors, wire cutters and bolt cutters, or large and small spanners. Ask them what the advantages and disadvantages of each are, and elicit the idea that the longer handles make it possible to exert a larger force at the cutting point/nut.
Students investigate the force needed to lift a given mass with a single pulley, two pulleys, etc. Also measure how far the force has to move to lift the mass by a given amount, and work out that force x distance is always the same (with allowances for friction). Suggest similar hydraulic activity with syringes and tubes.
Find images on the internet of an open sailing dinghy and ask them to identify similarities and differences between this and the racing boat in terms of simple machines. They should point out that both use pulleys to control the sail, both have tillers, but the dinghy does not have winches or hydraulics. Ask them to suggest why this is (less force needed as a much smaller sail area) and if this is so, why pulleys etc. are still needed (crew not usually as strong!)
Further ideas/ STEM Club ideas
Find out about capstans used on old ships (before steam power) to raise anchors etc. – how are they similar and different to the winches on the Land Rover BAR boats? (much bigger, worked by longer bars and many men, no gears)
KS3 NC Science – Physics
Energy changes and transfers
- Simple machines give bigger force but at the expense of smaller movement (and vice versa): product of force and displacement unchanged
- Moment as the turning effect of a force
- Forces: associated with deforming objects; stretching and squashing – springs; with rubbing and friction between surfaces, with pushing things out of the way; resistance to motion of air and water
- Measurements of stretch or compression as force is changed
- Force-extension linear relation
- Work done and energy changes on deformation
KS3 NC D&T– Physics
- Understand how more advanced mechanical systems used in their products enable changes in movement and force
AQA D&T Systems and control
- Motion: understand methods of changing the direction or distance of an output;
- Mechanical systems: Candidates should understand how mechanical advantage can be gained using levers and gears.
- Friction: Candidates should understand the application of friction and explain methods used to reduce friction.
OCR D&T Product design
- Systems and structures: Natural and mechanical structures, simple mechanical and electrical systems.
- Scientific principles: The importance of scientific principles in common products such as levers, and mechanisms on bicycles ; understanding how modern scientific principles and new materials have influenced the design of products.
- Understand the forces in devices and their relationship to work done and power
KS3 Design & Technology
- Learn about the properties and characteristics of mechanical components and apply this knowledge and understanding when designing and making products
- Demonstrate and apply knowledge and understanding of the concept of pressure qualitatively and select and use the relationship: force = pressure / area
GCSE D&T, Systems and Control
- Understand that mechanical systems transmit motion and convert types of motion
Third level Science
- Collaborate in investigations into the effects of gravity on objects and predict what might happen to their weight in different situations on Earth and in space
Fourth level Science
- Gain knowledge of how formulae may be used in the context of energy transfer and mechanical systems and apply them to solve problems, for example in engineering
National 5 Physics
- Use of an appropriate relationship to solve problems involving pressure, force and area
KS3 Science & Technology
- Incorporate control systems, such as mechanical, electronic or computer-based, in products and understand how these can be employed to achieve desired effects